INSTRUCTION MANUAL SM425 ZIRCONIA OXYGEN ANALYZER 35 INVERNESS DRIVE EAST ENGLEWOOD, CO 80112 USA TOLL-FREE SUPPORT: FAX: TEL: E-MAIL: WEBSITE: Copyright 2009 Teledyne Monitor Labs, Inc. 800-846-6062 303-799-4853 303-792-3300 tml_support@teledyne.com http://www.teledyne-ml.com 42500001 REV.
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INTRODUCTION SM425 INSTRUCTION MANUAL INTRODUCTION The SM425 Separate type Zirconia Oxygen Analyzer has been developed for combustion control in various industrial processes. This analyzer consists of a detector and a converter. You can select among several versions, based on your application. Optional accessories are also available to improve measurement accuracy and automate calibration. An optimal control system can be realized by adding appropriate options.
SM425 INSTRUCTION MANUAL INTRODUCTION Table of Contents Relates to Section Outline Installation Operation Maintenance 1. Overview Equipment models and system configuration examples ○ ▲ ○ 2. Specifications Standard specification, model code (or part number), dimension drawing for each equipment. ■ ○ ○ 3. Installation Installation method for each equipment ■ ▲ ■ ▲ ■ ▲ 4. Piping 5. Wiring 6. Components 7. Startup Examples of piping in three standard system configurations.
INTRODUCTION SM425 INSTRUCTION MANUAL For the safe use of this equipment The cell (sensor) at the tip of the detector is made of ceramic (zirconia element). Do not drop the detector or subject it to any stress. Do not allow the sensor (probe tip) to make contact with anything when installing the detector. Avoid any water dropping directly on the probe (sensor) of the detector when installing it. Check the calibration gas piping before flowing the calibration gas to ensure there is no leakage.
SM425 INSTRUCTION MANUAL INTRODUCTION (2) Safety and Modification Precautions • Follow the safety precautions in this manual when using the product to ensure protection and safety of personnel, product, and system containing the product. (3) The following safety symbols are used on the product as well as in this manual. This symbol indicates the operator must follow the instructions in this manual in order to avoid the risk of personnel injury, electric shock, or fatalities.
INTRODUCTION SM425 INSTRUCTION MANUAL (Ex. Data display “102” lit, “102” flashing) • Drawing for flashing Indicated in light print.
SM425 INSTRUCTION MANUAL INTRODUCTION NOTICE • Specification check. When the instrument arrives, unpack with care. Verify the instrument has not been damaged during shipment. Verify the specification matched the order and required accessories are not missing. Specifications can be checked by the model code on the nameplate. Refer to Section 0 “Specifications: for the list of model codes.
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL TABLE OF CONTENTS INTRODUCTION ............................................................................................................ III TABLE OF CONENTS ................................................................................................... IX LIST OF FIGURES...................................................................................................... XIV LIST OF TABLES ..................................................................
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS 3.1.4 Installation of the Dust Filter ( Part No 96751017), etc .................................................................. 44 3.2 Installation of the Detector (SM425P-015) ........................................................................................ 46 3.2.1 Installation Location ........................................................................................................................ 46 3.2.
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL 5.3.1 Cable Specifications ....................................................................................................................... 87 5.3.2 Connection to Detector ................................................................................................................... 88 5.3.3 Connection to Converter ................................................................................................................ 88 5.
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS 7.12 Manual Calibration .......................................................................................................................... 114 7.12.1 Setup for Manual Calibration ...................................................................................................... 114 7.12.2 Manual Calibration Procedure .................................................................................................... 115 8.0 DETAILED DATA SETTING ....
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL 10.1.4 Entering Tag Name .................................................................................................................... 159 10.1.5 Language Selection .................................................................................................................... 160 10.2 Blow Back ........................................................................................................................................ 160 10.2.
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS LIST OF FIGURES Figure 1-1 System 1 ...................................................................................................................................... 2 Figure 1-2 System 2 ...................................................................................................................................... 2 Figure 1-3 System 3 .....................................................................................................................
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL Figure 3-18 Pipe Mounting .......................................................................................................................... 58 Figure 3-19 Measuring Insulation Resistance............................................................................................. 59 Figure 4-1 Piping in System 1 .....................................................................................................................
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS Figure 7-9 Basic Setup.............................................................................................................................. 107 Figure 7-10 Equipment Setup ................................................................................................................... 108 Figure 7-11 Selecting “mA-output1” ..........................................................................................................
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL Figure 8-20 Fuel Setup ............................................................................................................................. 139 Figure 8-21 Display during Purging .......................................................................................................... 140 Figure 8-22 Other Settings ........................................................................................................................
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS Figure 11-8 Flowmeter replacement ......................................................................................................... 186 Figure 11-9 Flowmeter Attachment ........................................................................................................... 186 Figure 12-1 Error indication display ..........................................................................................................
TABLE OF CONTENTS SM425 INSTRUCTION MANUAL Table 8-8 Input Contact Functions ............................................................................................................ 131 Table 8-9 Fuel Data .................................................................................................................................. 138 Table 8-10 Default Settings for Fuel Values .............................................................................................
SM425 INSTRUCTION MANUAL TABLE OF CONTENTS USER NOTES xx 42500001 REV A
1.0 OVERVIEW SM425 INSTRUCTION MANUAL 1.0 OVERVIEW The SM425 Separate-type Zircon Oxygen Analyzer is used to monitor and control the oxygen concentration in combustion gases. Applications include boilers and industrial furnaces in industries which consume considerable energy such as steel, electric power, oil, petrochemical, ceramics, paper, pulp, food, textiles, incinerators, and any plant using medium/small boilers. It can help conserve energy in these industries.
SM425 INSTRUCTION MANUAL 1.0 OVERVIEW Figure 1-1 System 1 1.1.2 System 2 This system is for monitoring and controlling oxygen concentration in the combustion gases of a largesize boiler or heating furnace. Clean (dry) air (21% O2) is used as the reference gas and the span gas for calibration. Zero gas is fed in from a cylinder during calibration. The gas flow is controlled by the ZA8F flow setting unit (for manual valve operation). Figure 1-2 System 2 1.1.
1.0 OVERVIEW SM425 INSTRUCTION MANUAL Figure 1-3 System 3 *1 Shield cable; Use shielded signal cables, and connect the shield to the FG terminal of the converter. *2 Select the desired probe from the Probe Configuration table in 1.2.2. *3 When a zirconia oxygen analyzer is used, 100% N2 gas cannot be used as the zero gas. Use approximately 1% of O2 gas (N2-based). 1.2 SM425 System Components 1.2.
SM425 INSTRUCTION MANUAL 1.0 OVERVIEW 1.2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS This section describes the specifications for the following: SM425P General-use separate-type detector (See Section 1.4.1) ZO21R-L Probe protector (See Section 1.4.2) SM425P (0.15 m) High-temperature separate-type detector (See Section 1.5.1) ZO21P-H Adapter for High temperature probe (See Section 1.5.2) SM425 Separate type converter (See Section 1.6) ZA8F Flow setting unit (See Section 1.7.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS ±1% Maximum value of range setting; from 0 to 5 vol% O2 to 0 to 25 vol% O2 range (Sample gas pressure: within ±4.9 kPa) ±3% Maximum value of range setting; from 0 to 25 vol% O2 to 0 to 50 vol% O2 range (Sample gas pressure: within ±0.49 kPa) ±5% Maximum value of range setting; from 0 to 50 vol% O2 to 0 to 100 vol% O2 range (Sample gas pressure: within ±0.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL Reference Air System: Natural Convection, Instrument Air, Pressure Compensation (other than 0.15 m probe length) Instrument Air System (excluding Natural Convection): Pressure; 200 kPa + the pressure inside the furnace (It is recommended to use air dehumidified with a dew point of -20°C or less, and free of dust and oil mist.) Consumption; Approx.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL EXTERNAL DIMENSIONS 1.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS SM425P...
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.2.2 ZO21R-L Probe Protector This probe protector is required by the general-use detector in powdered coal boilers or in fluidized furnace applications to prevent particulate damage when gas flow exceeds 10 m/s. Select the probe protector ZO21R-L--*B appropriate for your application. Insertion Length: 1.05 m, 1.55 m, 2.05 m. Flange: JIS 5K 65A FF SUS304 ANSI Class 150 4 FF (without serration). However, flange thickness is different.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS 2.3 High-Temperature Separate-type Detector and Related Equipment 2.3.1 SM425P (0.15m) High-Temperature Separate-type Detector Standard Specifications Construction: Water-resistant, non-explosion proof Probe length: 0.15 m Terminal box: Aluminum alloy Probe material: Probe material in contact with gas: SUS 316 (JIS) (Probe), SUS 304 (JIS) (Flange), Zirconia (Sensor), Hastelloy B, (Inconel 600, 601) Weight: Approx.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL Table 2-1. External Dimensions - refer to Figure 2-1. 2.3.2 ZO21P-H Adapter for High-Temperature Probe The probe adapter is used to lower the sample gas temperature to below 700°C (below 300°C at probe adapter surface) before it is fed to the detector. Insertion length: 1 m or 1.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.4 SM425 Separate-type Converter 2.4.1 Standard Specification The SM425 Separate-type Converter can be controlled by LCD touch screen on the converter. Display: LCD display of size 320 by 240 dots with touch screen.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS EN 61326 Class A EN 55011 Class A Group 1 EN 61000-3-2 AS/NZS CISPR 11 This instrument is a Class A product, and it is designed for use in an industrial environment. Maximum Distance between Probe and Converter: Conductor two-way resistance must be 10 Ω or less (when a 1.25 mm cable or equivalent is used, 300 m or less.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL Blowback Function: Output contacts can be programmed to indicate blowback status. Auto/semi-auto selectable. Maintenance Functions: Displays data parameters, calibration data parameters, blowback data parameters, current output loop check, and input/output contact check. Setup Functions: Displays equipment parameters, current output data parameters, alarm data parameters, contact data settings, other parameters.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS up, calibration-gas pressure decrease, temperature high-alarm, blowback, flameout gas detection, calibration coefficient alarm, startup power stabilization timeout alarm) Converter Output: Two channels of mA analog output (4 to 20 mA DC (maximum load resistance of 550 Ω)) and one mA digital output point (HART) (minimum load resistance of 250 Ω).
2.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.5 ZA8F Flow Setting Unit and SM425CAL Automatic Calibration Unit 2.5.1 ZA8F Flow Setting Unit This flow setting unit is applied to the reference gas and the calibration gas in a system configuration (System 2). This unit consists of a flowmeter and flow control valves to control the flow of calibration gas and reference air. Standard Specifications Flowmeter: Calibration gas; 0.1 to 1.0 l/min. Reference air; 0.1 to 1.0 l/min.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.5.2 SM425CAL Automatic Calibration Unit An automatic calibration unit supplies a specified flow of reference gas and calibration gas during automatic calibration of the detector. Specifications Used when autocalibration is required for the separate type and instrument air is provided. The solenoid valves are provided as standard.
SM425 INSTRUCTION MANUAL 2.
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SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.6 ZO21S Standard Gas Unit This is a zero gas and span gas source for a System 1 configuration. It is used in combination with the detector only during calibration. Standard Specifications Function: Portable unit for calibration gas supply consisting of span gas (air) pump, zero gas cylinder with sealed inlet, flow rate checker, and flow rate needle valve. Sealed Zero Gas Cylinders (6 provided): E7050BA Capacity: 1l Filled pressure: Approx.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.7 Other Equipment 2.7.1 Dust Filter for the Detector (Part No.: 96751017) This filter is used to protect the detector sensor in a high particulate application. This filter requires a measurement gas flow of 1m/sec or faster for circulation of the gas. Standard specification Applicable detector: Standard-type detector for general-use (the measurement gas flow should be approximately perpendicular to the probe.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS 2.7.2 Dust Guard Protector (Part No.: K9471UC) Recommended when process gas flows directly into the measurement cell, flammable particulate flows into the measurement cell, or water droplets may leak into the measurement cell during downtime. Material: SUS316 Weight: Approx. 0.3 kg Figure 2-11 Dust guard protector dimensions 2.7.3 Auxiliary Ejector for High Temperature (Part No.
2.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS Figure 2-12 Auxiliary ejector for high temperature (Note: Pipes and connectors are not included.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL < Pressure setting for the auxiliary ejector for high-temperature use > Pressure supply for the auxiliary ejector should be set to a measured gas flow of approximately 5 l/min. To set this, proceed as follows: (refer to Figure 2-12) 1. In Graph 4, draw a horizontal line from the 5 l/min point on the vertical axis (Suction flow: Qg) toward the gas pressure line to be used, to find the point of intersection. 2.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS 2.7.4 Stop Valve (Part No. L9852CB or G7016XH) This valve mounted on the calibration gas line in the system allows for one-touch calibration. This is applies to the system configuration shown for system 1 in section 0. Standard Specifications Connection: RC 1/4 or 1/4 FNPT Material: SUS 316 (JIS) Weight: Approx. 80 g Table 2-10 Stop valve part numbers Figure 2-13 Stop valve 2.7.5 Check Valve (Part No.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL Figure 2-14 Check Valve 2.7.6 Air Set This set is used to lower the pressure when instrument air is used as the reference and span gases. Part No. G7003XF or K9473XK Standard Specifications Primary Pressure: Max. 1 MPa G Secondary Pressure: 0.02 to 0.2 MPa G Connection: Rc1/4 or 1/4FNPT (includes joint adapter) Weight: Approx.
SM425 INSTRUCTION MANUAL 2.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL Part No. G7004XF or K9473XG Standard Specifications Primary Pressure: Max. 1 MPa G Secondary Pressure: 0.02 to 0.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS 2.7.7 Zero Gas Cylinder (Part No. G7001ZC) The gas from this cylinder is used as the calibration zero gas and detector purge gas. Standard Specifications Capacity: 3.4 l Filled pressure: 9.8 to 12 MPa G Composition: 0.95 to 1.0 vol% O2 in N2 Figure 2-17 Zero gas cylinder 2.7.8 Cylinder Regulator Valve (Part No. G7013XF or G7014XF) This regulator valve is used with the zero gas cylinders. Standard Specifications Primary Pressure: Max. 14.
2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL 2.7.9 Calibration Gas Unit Case (Part No. E7044KF) This case is used to store the zero gas cylinders. Standard Specifications Case Paint: Baked epoxy resin, Jade green (Munsell 7.5 BG 4/1.5) Installation: 2B pipe mounting Material: SPCC (Cold rolled steel sheet) Weight: 3.6 kg, Approx.
SM425 INSTRUCTION MANUAL 2.0 SPECIFICATIONS 2.7.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL 3.0 INSTALLATION This section describes installation of the following equipment: Section 1.10 Detector (except SM425P-015) Section 1.11 Detector (SM425P-015) Section 1.12 Converter Section 1.13 ZA8F Flow Setting Unit Section 1.14 SM425CAL Automatic Calibration Unit Section 1.15 Calibration Gas Unit Case (E7044KF) 3.1 Installation of the Detector 3.1.1 Location Use the following precautions when installing the detector: 1.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION - The outside dimension of detector may vary depending on its options. Use a pipe that is large enough for the detector. Refer to Figure 3-1 for the correct dimensions. - If the detector is mounted horizontally, the calibration gas inlet and reference gas inlet should face downwards. - When using the detector with pressure compensation, ensure the flange gasket does not block the reference air outlet on the detector flange.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL 3.1.3 Installation of the Detector - The cell (sensor) at the tip of the detector is ceramic (zirconia). Do not drop the detector, as impact will damage it. - A gasket should be used between the flanges to prevent gas leakage. The gasket material should be heatproof and corrosion-proof, suited to the characteristics of the measured gas. The following should be taken into consideration when mounting the general-use detector: 1.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION 3.1.4 Installation of the Dust Filter ( Part No 96751017), etc - The dust filter is used to protect the Zirconia sensor from corrosive dust or a high concentration of dust such as in utility boilers and concrete kilns. If a filter is used in combustion systems other than these, it may have adverse effects such as response delay. These combustion conditions should be examined carefully before using a filter. - The dust filter requires gas flow of 1 m/sec.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL diameter 4.5 mm: P/N K9741UX) or insert a screwdriver through the holes. When attaching or reattaching the protector, apply “Never Seize Nickel Special” to the threads. The detector is used with a probe protector to support the probe (SM425P) when the probe length is 2.5m or more and it is mounted horizontally. 1. Install a gasket (not provided) between the flanges.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION 3. Where the detector is mounted horizontally, the reference gas and calibration gas inlet should face downward. When the probe protector is used in the Zirconia Oxygen Analyzer with pressure compensation (-P option), instrument air leaking from the probe protector may affect the measured value. Figure 3-4 Mounting of detector with a probe protector 3.2 Installation of the Detector (SM425P-015) 3.2.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL The temperature is measured by the probe inside of the probe adapter and at the surface of the blind flange on the side opposite the mounting flange. If the surface temperature is not within the above range, use the following procedures: 1. If the furnace pressure is negative, lower the pressure setting to reduce induction flow of the process gas. Refer to Section 1.9.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION 3.2.3 Probe Insertion Port A high-temperature detector consists of a SM425P-015 Detector and ZO21P High-temperature Probe Adapter. When forming the probe insertion port, the following should be taken into consideration: 1. If the probe is made of silicon carbide (SiC), the probe port should be formed so the probe can be mounted vertically (no more than a 5° tilt). 2.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL Table 3-1 Accessories for mounting high-temperature probe adapter A high-temperature detector should be mounted as follows: 1. It is recommended the detector be mounted vertically. If the detector must be mounted horizontally, ensure the probe tip be is mounted no higher than the probe base. 2. When mounting a high-temperature probe adapter, be sure to insert a gasket between the flanges to prevent gas leakage.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION 3.3 Installation of the Converter 3.3.1 Location The following should be taken into consideration when installing the converter: 1. Readability of the indicated values of oxygen concentration or messages on the converter display. Easy and safe access to the converter for operating keys on the panel. 2. Easy and safe access to the converter during normal operation and maintenance work. 3. An ambient temperature of not more than 55°C and stable to within 15°C a day.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL Figure 3-7 Pipe Mounting 1. Drill mounting holes through the wall as shown in Figure 3-8. Figure 3-8 Mounting holes 2. Mount the converter. Secure the converter on the wall using four screws. Note: For wall mounting, the bracket and bolts are not used.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION Figure 3-9 Wall Mounting 1. Cut out the panel according to Figure 3-10. Figure 3-10 Panel cutout sizes 2. Remove the fitting from the converter by loosening the four screws. 3. Insert the converter case into the cutout hole of the panel. 4. Re-attach the mounting fitting removed in step (2) to the converter. 5. Firmly fix the converter to the panel. Fully tighten the two clamp screws to hold the panel with the fitting.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL Figure 3-11 Panel mounting 3.4 Installation of ZA8F Flow Setting Unit 3.4.1 Location The following should be taken into consideration: 1. Easy access to the unit for during normal operation and maintenance work. 2. Near to the detector and the converter 3. No corrosive gas. 4. A stable ambient temperature of not more than 55°C. 5. Isolated from vibration. 6. Shielded from direct cunlight and rain. 3.4.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION Figure 3-12 Pipe Mounting 1. Make a hole in the wall as illustrated in Figure 3-13. Figure 3-13 Mounting holes 2. Mount the flow setting unit. Remove the pipe mounting parts from the unit and attach the unit securely on the wall with four screws.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL Figure 3-14 Wall mounting 3.5 Installation of SM425CAL Automatic Calibration Unit 3.5.1 Location The following should be taken into consideration: 1. Easy access to the unit during normal operation and maintenance work. 2. Close proximity to the detector and the converter 3. No corrosive gas. 4. A stable ambient temperature of not more than 55°C. 5. Isolated from vibration. 6. Shielded from direct sunlight and rain. 3.5.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION Figure 3-15 Pipe Mounting 1. Make a hole in the wall as illustrated in Figure 3-16. Figure 3-16 Mounting holes 2. Mount the Automatic Calibration Unit. Remove the pipe mounting parts from the mount fittings of the flow setting unit and attach the unit on the wall with four screws. If using M5 bolts, use washers.
3.0 INSTALLATION SM425 INSTRUCTION MANUAL Figure 3-17 Wall Mounting 3.6 Installation of the Calibration Gas Unit Case (E7044KF) The calibration gas unit case is used to store the G7001ZC zero gas cylinders. 3.6.1 Location The following should be taken into consideration: 1. Easy access for cylinder replacement 2. Easy access for normal operation 3. Close proximity to the detector and converter as well as the flow setting unit. 4.
SM425 INSTRUCTION MANUAL 3.0 INSTALLATION Figure 3-18 Pipe Mounting 3.7 Insulation Resistance Test High voltage testing may cause deterioration in insulation and a possible safety hazard. Therefore, conduct this test only when it is necessary. The applied voltage for this test shall be 500 V DC or less. The voltage shall be applied for as short a time as practicable to confirm the insulation resistance is 20 MΩ or more. Remove wiring from the converter and the detector. 1.
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SM425 INSTRUCTION MANUAL 3.0 INSTALLATION 3.
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SM425 INSTRUCTION MANUAL 62 3.
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SM425 INSTRUCTION MANUAL 64 3.
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SM425 INSTRUCTION MANUAL 66 3.
4.0 PIPING SM425 INSTRUCTION MANUAL 4.0 PIPING This section describes piping procedures based on three typical system configurations for SM425 Separate-type Zirconia Oxygen Analyzer. • Verify each check valve, stop valve, and joint used for piping does not leak. Calibration gas leakage from pipes and joints may cause clogging of the pipes and inaccurate calibration. • Test for leakage test after piping is installed.
SM425 INSTRUCTION MANUAL 4.0 PIPING - The stop valve should be connected directly to the detector. If any piping is present between the detector and the stop valve, water may condense in the pipe. This may cause damage to the sensor by thermal shock when the calibration gas is introduced. The stop valve should be closed except during calibration. - Piping the reference gas is recommended if a high-temperature detector is used (the sample gas temperature is 700°C or higher).
4.0 PIPING SM425 INSTRUCTION MANUAL Table 4-1 System 1 required piping parts 4.1.2 Connection to the Calibration Gas Inlet Mount a stop valve (of a quality specified by Teledyne Monitor Labs) on a nipple (found on the open market) as illustrated in Figure 4-2 (A stop valve may have been mounted on the detector prior to shipping the detector.). Mount a joint (also found on the open market) at the stop valve tip. Connect the piping (6(O.D) ~4(I.D.
SM425 INSTRUCTION MANUAL 4.0 PIPING the necessary oxygen concentration (21 vol% O2) cannot be obtained, install reference gas piping as described in Section 1.19, System 2. 4.1.4 Piping to the High-temperature Probe Adapter • Refer to Section 1.11.2 for guidelines on using the high-temperature probe adapter. • The sample gas should be at a temperature below 700°C before reaching the detector sensor.
4.0 PIPING SM425 INSTRUCTION MANUAL In cases where condensation is likely to occur in the probe adapter when the sample gas is cooled, protect the probe adapter with insulating material as illustrated in Figure 4-5. Figure 4-5 Preventing condensation Sample exhaust should be vented away from detectors without reference gas piping. An exhaust pipe should be installed as shown in Figure 4-6 and kept warm to prevent condensation.
SM425 INSTRUCTION MANUAL 4.0 PIPING 4.2 Piping for System 2 Piping in System 2 is illustrated in Figure 4-7. Figure 4-7 Piping for System 2 System 2 illustrated in Figure 4-7 requires piping as follows: • Connect a stop valve or check valve to the nipple at the reference gas inlet of the detector. • If a high-temperature detector is used and the sample gas is under negative pressure, connect an auxiliary ejector to the sample gas exhaust hole of the high-temperature probe adapter (see Section 1.18.
4.0 PIPING SM425 INSTRUCTION MANUAL - The probe is easily clogged if too much particulate is contained in the process gas such as in utility boilers or concrete kilns. To clear the particulate, compressed air is injected during blow back. Installation of blow back piping is shown in Section 1.20.1. 4.2.1 Piping Parts for System 2 Verify the parts listed in Table 4-2 are ready. Table 4-2 System 2 required piping parts 4.2.
SM425 INSTRUCTION MANUAL 4.0 PIPING Mount a check valve or stop valve (specified by Teledyne Monitor Labs) on the nipple (found on the open market) at the calibration gas inlet of the detector as illustrated in Figure 4-8. (The check valve or the stop valve may have been mounted on the detector when shipped.) Connect the flow setting unit and the detector to a stainless steel pipe 6 mm (O.D.) ~ 4 mm or larger (I.D.) (or nominal size 1/4 inch). Figure 4-8 Piping for the Calibration Gas Inlet 4.2.
4.0 PIPING SM425 INSTRUCTION MANUAL check span gas calibration contact output and adjust air-set (pressure regulator) so span gas flow is within the permitted range. Figure 4-9 SM425CAL Autocalibration unit piping diagram If blow back is used, prepare blow back piping according to Section 1.20.1. Blow back is used to get rid of particulate on the detector by injecting compressed air in the hightemperature probe adapter.
SM425 INSTRUCTION MANUAL 4.0 PIPING 4.3.1 Blow Back Piping This piping is required for blow back. The piping described below provides automatic blow back operation when the “blow back start“command is selected at the converter. Figure 4-11 Blowback Piping The following parts are required for blow back piping. • Blow pipe (to be prepared as illustrated in Figure 4-12.) • Two-way solenoid valve: “Open“ when energized.
4.0 PIPING SM425 INSTRUCTION MANUAL Figure 4-12 Manufacturing Blow pipe 4.4 Piping for the Detector with Pressure Compensation SM425P- - - -P Detector with Pressure Compensation may be used in System 2 and System 3. However, it cannot be used with the high-temperature probe adapter or blow back piping. Use this style detector whenever the process pressure exceeds 5 kPa (see Note).
SM425 INSTRUCTION MANUAL 4.0 PIPING Figure 4-13 Detector with Pressure Compensation Ensure that process gas does not flow into the probe. Valve operation 1. For safety, shut down the process before installing the detector. It is especially dangerous if the process internal pressure is high. 2. Before starting instrument air flow, completely shut the stop valve in front of the reference gas outlet. 3. Check the reference gas outlet is not blocked. 4.
4.0 PIPING SM425 INSTRUCTION MANUAL Supply air pressure (flow) may vary depending on the process pressure. It is recommended using a flow gauge and an air-set (pressure regulator) that is suitable for the process pressure. - When using the ZA8F Flow Setting Unit and SM425CAL Automatic Calibration Unit, note the supplying airflow (pressure) will vary depending on the process pressure. Figure 4-14 System 2 4.4.
SM425 INSTRUCTION MANUAL 4.0 PIPING 4.4.3 Piping for the Reference Gas Reference gas piping is basically identical to that of System 2. See Section 1.19.3.
5.0 WIRING SM425 INSTRUCTION MANUAL 5.0 WIRING This section describes the wiring necessary for the SM425 Separate-type Zirconia Oxygen Analyzer. 5.1 General - NEVER supply current to the converter or any other device constituting a power circuit in combination with the converter, until all wiring is completed. - This product complies with CE marking. Where compliance with CE marking is necessary, the following wiring procedure is necessary. 1.
SM425 INSTRUCTION MANUAL 5.0 WIRING Table 5-1 Cable specifications - Select suitable cable O.D. to match the cable gland size. - Protective grounding should be connected in ways equivalent to JIS D style (Class 3) grounding (the grounding resistance is 100 Ω or less). - Special consideration of cable length should be taken for the HART communication. For the detail, refer to Section 1.1.2 of the IM 11M12A01-51E "Communication Line Requirement ". 5.1.
5.0 WIRING SM425 INSTRUCTION MANUAL Figure 5-1 Terminals for external wiring in the converter If shielded cables cannot be used between the detector and the terminal box, (for example when heatresistant wiring is used), locate the detector and the terminal box as close together as possible. 5.1.2 Wiring Connect the following wiring to the converter. It requires a maximum of eight wiring connections as shown below. 1. Detector output (connects the converter with the detector.) 2.
SM425 INSTRUCTION MANUAL 5.0 WIRING Figure 5-2 Wiring connection to the converter 5.1.3 Mounting of Cable Gland For each cable connection opening of the converter, mount a conduit hub that matches the thread size or install a cable gland.
5.0 WIRING SM425 INSTRUCTION MANUAL 5.2 Wiring for Detector Output This wiring enables the converter to receive cell output from the detector, output from a thermocouple, and a reference junction compensation signal. Install wires with 10Ω of loop resistance or less. Keep detector wiring away from power wiring. Separate signal and power wiring.
SM425 INSTRUCTION MANUAL 5.0 WIRING 1. Mount conduit hubs of the specified thread size or cable glands to the wiring connections of the detector. The detector may need to be removed in future for maintenance, so allow sufficient cable length. 2. If the ambient temperature at the location of wire installation is 80 to 150°C, use a flexible metallic wire conduit. If a non-shielded 600V silicon rubber insulated glass braided wire is used, keep the wire away from noise sources to avoid noise interference. 3.
5.0 WIRING SM425 INSTRUCTION MANUAL 5.2.3 Connection to the Converter To connect the wiring to the converter, proceed as follows: 1. M4 screws are used for the terminals of the converter. Each wire in the cable should be terminated with the corresponding size crimp-on terminal. 2. If a rubber insulated glass braided wire is used to wire the detector, use a terminal box. For wiring between the terminal box and the converter, use PVC sheathed PVC insulated cable rather than individual wires.
SM425 INSTRUCTION MANUAL 5.0 WIRING 5.3.2 Connection to Detector When connecting the cable to the detector, proceed as follows: 1. Mount cable glands or conduits of the specified thread size to the wiring connections of the detector. The detector may need to be removed in future for maintenance, allow sufficient cable length. 2. If the ambient temperature at the location of wire installation is 80 to 150°C, use a flexible metallic conduit for the wire.
5.0 WIRING SM425 INSTRUCTION MANUAL The preceding is recommended to prevent moisture or corrosive gas from entering the converter. Where the ambient environment of the detector and the converter is well-maintained, wiring from the detector directly to the converter without conduit is allowed. This wiring carries power for the heater. Be careful to wire to the correct terminals and do not ground or short circuit terminals, otherwise the instrument may be damaged 5.
SM425 INSTRUCTION MANUAL 5.0 WIRING Figure 5-9 Power and Grounding wiring 5.5.1 Power Wiring Connect the power wiring to the L and N terminals of the converter. Proceed as follows: 1. Use a 2-core or a 3-core shielded cable. 2. The size of converter terminal screw threads is M4. Each cable should be terminated with the corresponding crimp-on terminal. 5.5.2 Grounding Wiring The ground wiring of the detector should be connected to the ground terminal of the detector case.
5.0 WIRING SM425 INSTRUCTION MANUAL Figure 5-10 Contact output wiring 5.6.1 Cable Specifications Number of wires in cable varies depending on the number of contact(s) used. 5.6.2 Wiring Procedure 1. M4 screws are used for the terminals of the converter. Each wire in the cable should be terminated with the corresponding crimp-on terminal. 2. The capacities of the contact output relay are 30 VDC 3 A, 250 VAC 3 A. Connect the load (e.g. pilot lamp and annunciator) with these operational limits. 5.
SM425 INSTRUCTION MANUAL 5.0 WIRING Figure 5-11 Automatic Calibration Unit 5.7.1 Cable Specifications Use a three-core cable for this wiring. 5.7.2 Wiring Procedure M4 screws are used for the terminals of the converter. Each cable should be terminated with the corresponding crimp-on terminals. M4 screws are used for the terminals of the solenoid valve as well.
5.0 WIRING SM425 INSTRUCTION MANUAL Figure 5-12 Wiring for Automatic Calibration Unit 5.8 Contact Input Wiring The converter can initiate specified functions by external contact closure signals. To use these contact signals, wire as follows: Figure 5-13 Contact Input Wiring 5.8.1 Cable Specifications Use 2-core or 3-core cable for this wiring. Depending on the number of input(s), determine which cable to use. 5.8.2 Wiring Procedure 1. M4 screws are used for the terminals of the converter.
SM425 INSTRUCTION MANUAL 5.
6.0 COMPONENTS SM425 INSTRUCTION MANUAL 6.0 COMPONENTS In this Section, the names and functions of components are described for the major equipment of the SM425 Separate-type Zirconia Oxygen Analyzer. 6.1 SM425P Detector 6.1.1 General-purpose Detector (except for SM425P-015) Figure 6-1 General-use Detector (standard type) 6.1.
SM425 INSTRUCTION MANUAL 6.
6.0 COMPONENTS SM425 INSTRUCTION MANUAL 6.
SM425 INSTRUCTION MANUAL 6.0 COMPONENTS 6.
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SM425 INSTRUCTION MANUAL 6.
7.0 STARTUP SM425 INSTRUCTION MANUAL 7.0 STARTUP This section describes the minimum operating requirements for the SM425. Detiails include supplying power to the converter, analog output confirmation, and manual calibration. For system tuning by the HART communicator, refer to IM11M12A01-51E "HART Communication Protocol ". 7.1 Checking Piping and Wiring Connections Verify the piping and wiring connections have been properly completed in accordance with Section 0, “Piping,” and Section 0, “Wiring.” 7.
SM425 INSTRUCTION MANUAL 7.0 STARTUP 7.3 Supplying Power to the Converter To avoid temperature changes around the sensor, it is recommended power be continuously supplied to the Oxygen Analyzer even if it is only used periodically. The flowing of span gas (instrument air) beforehand is also recommended. Supply power to the converter. A display indicating the detector sensor temperature then appears as shown in Figure 7-1. As the heat in the sensor increases, the temperature gradually rises to 750°C.
7.0 STARTUP SM425 INSTRUCTION MANUAL Figure 7-3 Basic Panel Display Screen Tag name display area: Displays the set tag name (Refer to Section 1.53.4, “Entering Tag Name”). Primary to tertiary display items: Displays the selected item. (Refer to Section 1.41, “Setting Display Item”.) Switch display area: Displays switches and functions selected according to the panel display. Alarm and error display area: Displays an error indicator if an alarm or error occurs.
SM425 INSTRUCTION MANUAL 7.
7.0 STARTUP SM425 INSTRUCTION MANUAL 7.4.3 Display Functions Individual panel display screens in the display configuration provide the following functions: 1. Basic panel display: Displays the values measured in three selected items (see Section 1.41, “Setting Display Items”). 2. Execution/Setup display screen: Selects calibration execution, blow back execution, reset panel display, maintenance, and setup display screens. 3.
SM425 INSTRUCTION MANUAL 7.0 STARTUP Figure 7-6 Text Entry Display Three alphabetic characters and three “other” characters are assigned for each individual key. If the alphabetic character key is pressed and held, three characters appear in sequence. Release the key when the desired character appears to enter it. If an incorrect character is entered, move the cursor to that position and re-enter the character. Figure 7-7 shows an example of entering “abc%123.” Figure 7-7 Text Entry Example 7.
7.0 STARTUP SM425 INSTRUCTION MANUAL Note all settings will be reinitialized to default settings if the converter type selection is changed. To confirm the converter type, follow these steps: 1. Press the setup key. 2. Use the▼ key to select Setup and press the [Enter] key. 3. Press the [Enter] key on the password entry display screen if a password has not been set for commissioning. Otherwise enter the password for the Commissioning display screen. See Section 1.50.
SM425 INSTRUCTION MANUAL 7.0 STARTUP Figure 7-10 Equipment Setup 7.6 Confirmation of Detector Type Setting Check the detector in Figure 7-9 is the correct type. • If this converter is to be used with the ZO21D, the power requirements are limited to 125 V AC or less, 50 Hz or 60 Hz (it cannot be used with 125 VAC or greater, or in Europe). • If detector settings are to be changed, first disconnect the wiring connections between the detector and the converter. Then change detector settings appropriately.
7.0 STARTUP SM425 INSTRUCTION MANUAL Figure 7-11 Selecting “mA-output1” Figure 7-12 Setting “mA-output1 range” 7.9 Selecting Display Items This paragraph briefly describes the selection of items to be displayed in the primary, secondary, and tertiary value areas of the basic panel display. See Figure 7-13, “Basic Panel Display”. Figure 7-13 Basic Panel Display 1. Press the Setup key in the basic panel display screen to display the Execution/Setup display screen then select Maintenance. 2.
SM425 INSTRUCTION MANUAL 7.0 STARTUP key to display the Display item selection display (Figure 7-17). Choose an item and press the [Enter] key. 4. Select the Secondary and Tertiary values in the same manner as the Primary value. 5. Consult Table 7-2, “Display Items” for items that can be selected for each of the display areas.
7.0 STARTUP SM425 INSTRUCTION MANUAL Figure 7-17 Display Item Selection Table 7-2 Display Items About the air ratio: “Air ratio” is defined as the ratio of the amount of air theoretically required to completely burn all the fuel to the amount of air actually supplied. In the SM425, the air ratio is obtained by measuring the oxygen concentration in the exhaust gas.
SM425 INSTRUCTION MANUAL 7.0 STARTUP m = Air ratio X = Fuel coefficient, Nm3/kg or m3/m3 For details on each parameter, refer to Section 1.50.3, “Fuel Settings.” 7.10 Checking the Current Loops A programmed test current is sent to the analog output. 1. Press the Setup key on the basic panel display to display the Execution/Setup display. Then select Maintenance in the Execution/Setup display screen. 2.
7.0 STARTUP SM425 INSTRUCTION MANUAL • Conducting an open-close check for contact output 4 generates an Error 1 or Error 2. This is because the built-in heater power of the detector, which is connected to contact output 4, is turned off during the above check. If these errors occur, reset the equipment or cycle power to restart (refer to Section 0, “Reset”). 7.11.
SM425 INSTRUCTION MANUAL 7.0 STARTUP Figure 7-21 Input Contact Check Display 7.12 Manual Calibration The SM425 analyzer is calibrated by comparing the measured zero and span gas values to reference zero and span gas values. There are three types of calibration procedures available: 1. Manual calibration. 2. Semi-automatic calibration which is initiated with the touch panel or a contact input signal. Semiautomatic calibration uses programmed calibration and stabilization times. 3.
7.0 STARTUP SM425 INSTRUCTION MANUAL 7.12.1.2 Select the Calibration Points Select “Points” in the Calibration setup display screen. Select “Both” if performing the initial calibration for commissioning the analyzer. 7.12.1.3 Set the Calibration Gas Concentrations 1. Zero-gas concentration: Select “zero gas conc” and enter the value of zero calibration gas concentration using the Numeric-data Entry screen; if the oxygen concentration is 0.98 vol% O2, enter 00098. 2.
SM425 INSTRUCTION MANUAL 7.0 STARTUP 2. Select Manual calibration and press the [Enter] key. The Manual calibration display shown in Figure 7-24 then appears. Verify the concentration value displayed is the correct value for the reference span gas. If it is, select “Next”. Figure 7-24 Manual Calibration 3. Follow the prompt in Figure 7-25 to establish span gas flow. Open the span-gas flow valve of the Flow Setting Unit by loosening the valve lock-nut and slowly turning the valve shaft counterclockwise.
7.0 STARTUP SM425 INSTRUCTION MANUAL 5. After the measured value has stabilized, press the [Enter] key to display the “span-calibration complete” display screen shown in Figure 7-27. At this point, the measured value is corrected to the span-gas concentration setting. Close the span-gas flow valve. The valve lock-nut should be tightened completely to prevent the span gas from leaking. Figure 7-27 Span Calibration Complete 6.
SM425 INSTRUCTION MANUAL 7.0 STARTUP 8. After the zero gas flow has been established, select “Valve opened” as shown in Figure 7-29. An oxygen-concentration trend graph screen appears (see Figure 7-30). The CAL TIME in the bottom area of the panel flashes. Observe the trend graph and wait until the measured value stabilizes in the vicinity of the zero-gas concentration on the graph. The graph shows the concentration before calibration, so the value may not be correct at this point.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 8.1 Configuring Analog Outputs The following paragraph describes configuring the analog outputs. 8.1.1 Setting Concentrations for Analog Outputs To set the minimum and maximum currents, proceed as follows: 1. Select Setup in the Execution/Setup display screen. 2. Select the mA-output setup in the Setup display screen. 3. Select mA-output1 in the mA-output display screen. 4. Select “Min. oxygen conc.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 8.1.3 Setting Output Damping Constants If an analog output is used as a control signal, rapidly fluctuating oxygen concentrations will cause undesirable switching in the process or device being controlled. To avoid this, there is a damping constant which ranges from 0 to 255 seconds. Enter the appropriate output damping constant using the number-data entry display screen. For example, enter “030” to set the damping constant to 30 seconds. 8.1.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.2 Configuring Output Hold The “output hold” function retains an analog output signal at a predetermined value during certain equipment states. Outputs 1 and 2 can be set independently. Table 8-2 shows the output hold selections available for each of the states.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING For semi-automatic calibration, “under calibration” is the time between initiating a calibration by input contact signal or from the touch panel screen and completion of output stabilization. For automatic calibration, “under calibration” is the time between initiating a calibration by the timer settings and the completion of output stabilization. 4. During “Blow back” (see Section 1.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL Figure 8-3 mA-outputs preset Selection 2. Select the desired equipment state. Figure 8-3 shows an example of selecting Maintenance. Select the desired output hold selection. 3. If a preset value is selected, set the corresponding output current. Select the preset value just below Maintenance on the screen; the numeric-data entry display screen appears. Enter the desired current value.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 8.3.2 Alarm Output Actions The oxygen concentration alarms have two programmable parameters, delay and hysteresis, which can be used to minimize unwanted alarm action when the process oxygen level is near an alarm set point. Delay is the time in seconds that the process must continuously be in an alarm state before the alarm is issued or continuously out of the alarm state before the alarm is cleared.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.3.3 Alarm Configuration Procedure To display the Alarm setup display, follow these steps: 1. Press the Setup key in the basic panel display screen to display the Execution/Setup display. 2. Select Setup in the Execution/Setup display screen. The “Commissioning” (Setup) display appears. 3. Select the Alarm setup in the “Commissioning” (Setup) display screen. The Alarms setup display shown in Figure 8-5 appears.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING Figure 8-6 Oxygen Alarms Display 8.3.4 Default Alarm Settings Default alarm settings are shown in Table 8-4. Table 8-4 Alarm Setting Default Values 8.4 Configuring Output Contacts 8.4.1 About Output Contacts Mechanical relays provide the output contacts. Relay contact ratings are specified in Section 1.3, “General Specifications”. The operational states of the contacts are shown in Table 8-5.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL Table 8-5 Output contact states 8.4.2 Programming the Output Contacts Only output contacts 1, 2, and 3 can be programmed. Each of these contacts can be activated by multiple alarms and “other conditions”. The alarm or condition is selected by turning it “ON”. In addition, the state of the active contact can be programmed to be open or closed. To program the output contacts, follow these steps: 1.
SM425 INSTRUCTION MANUAL 8.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL Table 8-6 Output Contact Settings Items to be selected Alarm and Error settings Other settings Brief description High-high-limit alarm If “high-high alarm ON” is selected, contact output occurs during a high-highlimit condition. In alarm setup the high-high alarm must be set ON (see Section 1.47). High-limit alarm If “high alarm ON” is selected, contact output occurs during a high-limit alarm condition.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 8.4.3 Default Output Contact Settings Default output contact settings are shown in Table 8-7.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.5 Configuring Input Contacts 8.5.1 Input Contact Functions The converter input contacts initiate selected functions by accepting a remote dry-contact (“voltage-free contact”) signal. Table 8-8 shows the functions initiated by a remote contact signal.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 1. Contact-initiated measurement range switching is available for analog output1 only. 2. Either semi-automatic or automatic mode must be selected in the Calibration Setup display screen to enable contact-initiated calibrations. 3. Either semi-automatic or automatic mode must be selected in the Blow Back Setup display screen to enable contact-initiated blow backs. 4.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL Figure 8-12 Input Contacts Display 8.5.3 Default Input Contact Setting The default contact input setting is “No function” for both contacts. 8.6 Other Settings 8.6.1 Setting the Date and Time Use the following procedure to set the current date and time. Time and date must be set for automatic calibrations and blowbacks to work: 1. Press the Setup key in the Basic Panel display screen. 2. Select “Setup” in the Execution/Setup display screen. 3.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING Figure 8-14 Clock Display 8.6.2 Setting Periods for Averaging and Maximum-Minimum Values The SM425 monitors maximum, minimum, and average oxygen concentrations over intervals programmable from 1 to 255 hours. The average, maximum, and minimum values are displayed on the Detailed-Data display screen (see Section 1.53.1). Use the following procedure to program these intervals. 8.6.2.1 Procedure 1. Press the Setup key in the Basic Panel display screen. 2.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.6.3 Setting Fuels 8.6.3.1 Input Parameters The SM425 calculates the moisture content contained in exhaust gases. The following explains the fuel parameters necessary for calculation and their entries. The moisture quantity may be mathematically expressed by: Figure 8-16 Moisture quantity calculation Fill in the boxes with fuel parameters in Equation 2 above to calculate the moisture content. Use A0, Gw, and X shown in Table 8-9.
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8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL 8.6.3.2 Procedure Follow these steps to make a fuel setting: 1. Press the Setup key in the Basic Panel display screen. 2. Select Setup in the Execution/Setup display screen. The “Commissioning” (Setup) display screen then appears. 3. Select “Others” and then the Fuel setup as shown in Figure 8-19. 4. Select “Theoretical air quantity” and “Content of moisture in the exhaust gas” in turn. The numeric-data entry display screen then appears.
SM425 INSTRUCTION MANUAL 8.0 DETAILED DATA SETTING 8.6.4 Setting Purging Time Purging removes condensed water in the calibration gas pipe by supplying span calibration gas for a programmed length of time prior to detector warm-up. This prevents cell damage during calibration due to condensed water in the calibration gas pipe. The automatic calibration span gas solenoid opens during purging and closes after the purge time has elapsed to start the warm-up process.
8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL Figure 8-23 Purging Display 8.6.5 Setting Passwords Passwords are used to prevent unauthorized access to display screens available in the Execution/Setup display screen menu. One password allows access to the Commissioning display screen and another password allows access to the Calibration execution, Blow back execution, and Maintenance display screens. Proceed as follows: 1. Press the Setup key in the Basic Panel display screen. 2.
SM425 INSTRUCTION MANUAL 8.
9.0 CALIBRATION SM425 INSTRUCTION MANUAL 9.0 CALIBRATION 9.1 Calibration Principles 9.1.1 Measurement Principle This section explains the principles of measurement and calibration for a zirconia oxygen analyzer. The sensor cell is a zirconia element plated on both sides with platinum forming two electrodes. Zirconia, a solid electrolyte, becomes a conductor of oxygen ions at high temperatures resulting in a voltage being generated between the electrodes.
SM425 INSTRUCTION MANUAL 9.0 CALIBRATION Figure 9-1 Cell Voltage vs. Oxygen Concentration The measurement principles of a zirconia oxygen analyzer have been described above. However, this relationship between oxygen concentration and the electromotive force of a cell is only theoretical. In practice, a sensor shows a slight deviation from the theoretical value and calibration is necessary to obtain accurate measurements. Calibration generates a curve, which compensates for this deviation. 9.1.
9.0 CALIBRATION SM425 INSTRUCTION MANUAL and the span-point correction ratio by C/A x 100 (%). If the zero correction ratio is not within the 100 ± 30 % range or the span correction ratio is not in the 0 ± 18 % range, the sensor can not be calibrated. Figure 9-2 Calculation of a Two-point Calibration Curve Figure 9-3 shows a one-point calibration using only span gas. In this case, only the cell electromotive force for a span gas with oxygen concentration p1 is measured.
SM425 INSTRUCTION MANUAL 9.0 CALIBRATION 9.1.4 Data Retained During Calibration Calibration data and the sensor status data listed below are acquired during calibration. However, if the calibration fails (an error occurs during automatic or semi-automatic calibration), this data is not retained. This data can be observed by selecting the detailed data display key from the basic panel display. For an explanation and the operating procedures of individual data, consult Section 1.53.1, “Detailed Display.” 1.
9.0 CALIBRATION SM425 INSTRUCTION MANUAL Only manual calibrations can be executed. Semi-automatic and automatic calibrations are not available. • When semi-automatic calibration is selected: Either manual or semi-automatic calibrations can be executed. Automatic calibrations are not available. • When automatic calibration is selected: Manual, semi-automatic, or automatic calibrations can be executed. Select Mode from the Calibration setup display screen(see Figure 9-4).
SM425 INSTRUCTION MANUAL 9.0 CALIBRATION Select “Zero gas conc.” in the Calibration setup display screen. The numeric-data entry display then appears. Enter the desired oxygen concentration for the zero-point calibration. (The zerogas set ranges from 0.3 to 100 % O2.) Enter 00098 for an oxygen concentration of 0.98 vol% O2. 9.2.1.4 Setting Span-gas Concentration Value To enter the oxygen concentration of the span-gas: Select “Span gas conc.” in the Calibration setup display screen.
9.0 CALIBRATION SM425 INSTRUCTION MANUAL details, consult Section 1.46,”Output Hold setting”. Hold time can be set from 00 minutes, 00 seconds to 60 minutes, 59 seconds. Csl Time (calibration time) is the time between the start of calibration-gas flow and calibration measurement reading. Csl time is applied to both zero and span gases. See Figure 9-7. Csl time can be set from 00 minutes, 00 seconds to 60 minutes, 59 seconds. Interval applies to automatic calibration mode only.
SM425 INSTRUCTION MANUAL 9.0 CALIBRATION 1. The calibration interval must not be shorter than the sum of the hold time and the Csl time (or twice the Csl time for a two-point calibration). 2. If the calibration start time occurs during a manual or semi-automatic calibration cycle, the automatic calibration will not start. 3.
9.0 CALIBRATION SM425 INSTRUCTION MANUAL 9.2.3.2 Semi-automatic Calibration To start a semi-automatic calibration from the touch panel, follow these steps: 1. Select the Setup key in the basic panel display screen. Then select Calibration from the Execution/Setup display screen. The Calibration display shown in Figure 9-8 appears. 2. Select Semi-autocalibration from the Calibration display screen as shown in Figure 9-9. 3. Select “Start calibration”. The display shown in Figure 9-10 then appears.
SM425 INSTRUCTION MANUAL 9.0 CALIBRATION To start calibration using an input contact, follow these steps: 1. Select “Calibration start” as the function and the active state for the desired input contact (see Section 1.49). 2. Activate that input contact to start calibration. To stop calibration midway, follow these steps: 1. Press the Return key once. The calibration will stop and the analyzer will begin the hold stabilization timeout. 2. Press the Return key again.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS 10.1 Display 10.1.1 Detailed Display Press the Detailed-data key on the basic panel display screen to display the detailed operation data as shown in Figure 10-1. Scroll through the data screens using the ▲ or ▼ keys. • Detailed-data display There are ten panel displays for viewing detailed data. The following paragraphs describe the operational data displayed on the detailed-data display. Figure 10-1 Detailed-data Display 10.1.1.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-2 Corrected calibration curve 10.1.1.2 Response Time The cell’s response time is defined in Figure 10-3. The zero-point and span-point must both be set during calibration for response time to be measured.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL 10.1.1.3 Robustness of a Cell The robustness of a cell is an indicator of the remaining life of a sensor. It is expressed as one of four time periods the cell may still be used: 1. more than a year 2. more than six months 3. more than three months 4. less than one month The above four time periods are for preventive maintenance only. This cell’s robustness is a function of the response time, the cell’s internal resistance, and calibration factor.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS 10.1.1.7 Thermocouple Voltage The cell temperature is measured with a Type K (chromel-alumel) thermocouple. The thermocouple cold junction is located in the detector terminal box. The cell temperature and the thermocouple voltage (including the voltage corresponding to the cold junction temperature) are displayed. 10.1.1.8 Cold Junction Resistance (C.J. Voltage) The SM425P Detector measures the cold junction temperature using an RTD (Pt 1000).
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL 10.1.1.16 History of Calibration Time The calibration-conducted dates and times, along with span-gas and zero-gas ratios for the past ten calibrations are stored in memory. 10.1.1.17 Power Supply Voltage For accurate temperature control of the detector heater, the power supply voltage and frequency must be set appropriately. Set the AC supply voltage to "Low" if supply is 140 Vac or less, or to "High" if it is 180 Vac or more. 10.1.1.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-4 Trend Graph 10.1.2.2 Sampling Period To plot a graph, set the sampling period for the measurement data. This graph allows the plotting of 60 data points per graduation on the time axis. For example, a tensecond sampling period, graduation corresponds to 600 seconds (Figure 10-5). The sampling periods range from 1 to 30 seconds allowing time history ranging from 5 to 150 minutes. Figure 10-5 Plotting Graph for Sampling Period 10.1.2.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL Table 10-3 Default Values for Graph Setting If a rapid change in the measured value occurs during sampling, no sampled data are plotted on the graph. Adjust limits as needed. 10.1.3 Auto(matic) Revert Time When the Execution/Setup display screen or any of its sub-screens (see Figure 7-4) are active with no user input for a certain time, the current display will automatically return to the Basic Panel display screen.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-6 “Display Item” Display 10.1.5 Language Selection You can select English, German, or French for the display. If you selected an English display (basic code: -E, for the display) at the time of purchase, “English” will be the default language. To select the language you want, follow these steps: 1. Select the Setup key from the basic panel display screen to display the Execution/Setup display screen.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL These three modes each have the specific limitations described below: • If “No Function” is selected: No blow back operations are executed. • If “Semi-auto” is selected, semi-automatic blow back can be executed (but no calibration is made even when the automatic calibration startup time is reached.) • If “Auto” is selected, automatic blow back can be executed in either the “Auto” or “Semi-auto” mode.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-9 Operation of Blow Back 10.2.1.3 Setting Output Hold Time and Blow Back Time If the blow back mode is in “No function,” the output “Hold time” and “Blow back time” are not displayed. If you select “Hold time,” the numeric-data entry display screen appears. The desired “Hold time” (outputstabilization time) can be set within the range of 00 minutes, 00 seconds to 60 minutes, 59 seconds.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL - If the blow back is initiated with an input contact signal, it must be preset in the Input contacts setting (for more details, see Section 1.49). - In Section 1.48, “Output Contact Setup”, set the contact used as the blow back switch beforehand. - Do not set any other function for the contact used as the blow back switch. Otherwise, blow back may be activated when the contact is operated by another function.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-11 Defaults Display Figure 10-12 Initialization Start Display • Initialization will not be completed if power is cycled during the set data initialization.
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10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL 10.4 Reset Resetting is a restart of the analyzer. The equipment is reset by turning the power off and then back on. An analyzer processor restart can also be initiated without cycling power. Resetting is required if any of the following error conditions occur: 1. Error 1 – if the cell voltage is defective 2. Error 2 – if a temperature alarm occurs 3. Error 3 – if the A/D converter is defective 4.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS 10.5.1 Standard Gas Unit Component Identification Figure 10-14 Standard Gas Unit Component Identification 10.5.2 Installing Gas Cylinders Each ZO21S Standard Gas Unit comes with six zero-gas cylinders, including a spare. Each gas cylinder contains 7-liters of gas with a 0.95 to 1.0 vol % O2 (concentration varies with each cylinder) and nitrogen, at a pressure of 700 kgPaG (at 35°C).
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL To install the gas cylinder, follow these steps: 1. Install the zero gas valves onto the gas cylinder. Before installing, turn the valve regulator of the zero-gas valve counterclockwise to completely retract the needle away at the top from the gasket surface. With the valve in this position, manually screw the valve mounting into the mouthpiece of the gas cylinder. Use a wrench to make final tightening adjustment. 2.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Figure 10-15 Manual Calibration Display 2. Next, adjust the flow rate to 600 ± 60 ml/min using the span gas valve “AIR” (the flow check ball stops floating on the green line when the valve is slowly opened). To rotate the valve shaft, loosen the lock nut and turn it using a flat-blade screwdriver. Turning the valve shaft counterclockwise increases the flow rate. 3. After adjusting the flow rate, tighten the valve lock nut. 4.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL Figure 10-17 Manual Calibration Display 1. Turn the gas cylinder valve regulator fully clockwise by hand. 2. Adjust the flow rate to 600 ± 60 ml/min (the flow indicating ball stops floating on the green line when the valve is slowly opened) by turning the regulator valve back slowly counterclockwise and monitoring the flow indicating ball. 3. Select Valve opened (to start calibration) from the Manual calibration display screen.
SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS Store the standard gas unit with the gas cylinder mounted where the ambient temperature does not exceed 40°C. Otherwise, the gas cylinder may explode. Store the spare gas cylinders under the same condition. 10.6 Methods of Operating Valves in the ZA8F Flow Setting Unit The ZA8F Flow Setting Unit is used as a calibration device for analyzer conforming to System 2. Calibration of a System 2 is a manual operation.
10.0 OTHER FUNCTIONS SM425 INSTRUCTION MANUAL 1. When the display screen as shown in Figure 10-19 during calibration, open the zero gas flow setting valve and adjust the flow rate to 600 ± 60 ml/min. To rotate the valve shaft, loosen any lock nut and slowly turn it counterclockwise. Monitor the flow rate using the calibration gas flowmeter. 2. Adjust the measurement gas pressure to obtain pressures listed in Table 10-7 ± 10%.
SM425 INSTRUCTION MANUAL 10.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE This section describes the inspection and maintenance procedures for the SM425 Zirconia Oxygen Analyzer. Carefully observe the following when working on the detector: - The sensor at the tip of the probe operates at temperatures approaching 750 °C. To avoid possible skin burns allow the sensor and probe to cool sufficiently before touching.
SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE 11.1.2 Replacing the Sensor Assembly The performance of the sensor (cell) deteriorates as its surface becomes contaminated during operation. The sensor must be replaced when it has reached its life expectancy. For example, when it can no longer detect a zero-gas ratio of 100 ±30 % or a span-gas ratio of 0 ±18 %. The sensor assembly must be replaced if it is damaged or becomes inoperable.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL Figure 11-2 Installing the Contact 2. Make sure the O-ring groove on the flange surface of the sensor is clean. Install the metal O-ring in the O-ring groove and then insert the sensor in the probe while turning it clockwise. When the metal O-ring comes in contact with the probe’s surface, align the bolt openings and the Ushaped-pipe insertion hole. 3.
SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE Optional inconel bolts have a high coefficient of expansion. If excess torque is applied while the bolts are being tightened, abnormal strain or breakage may result. Tighten the bolts following the instructions given above. 11.1.3 Replacement of the Heater Unit This section describes the replacement procedure for the heater unit. The sensor and ceramic heater-furnace core are subject to fracturing.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL Figure 11-4 Exploded View of Detector with Pressure Compensation Note: The parts marked by * apply only to pressure compensated detectors. Replacement of heater strut assembly (SM425P Style S2 and after) Refer to Figure 11-4 as an aid in the following discussion. 11.1.3.1 Remove the Sensor Cell Remove the Filter holder, the U-shaped Pipe, the Filter, and the Cell according to Section 1.59.2.2 “Sensor Cell Removal Procedure”.
SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE 11.1.3.2 Remove the Terminal Box 1. Open the terminal box and remove the three terminal connections (CELL+, TC+, and TC-). 2. Remove terminal block SCREWs (28) before disconnecting the two HTR wires from the terminal block. The other terminal connections remain connected. 3. Remove the two SCREWs (15) that fasten the COVER (12) and slide the cover to the flange side. 4.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL insulator are heater wires and the single-core wire is CELL+. One of the two core-wires with semitransparent silicone tubing is TC+ and the other is TC-. 11.1.3.6 Install the Cell Install the Filter holder, the U-shaped Pipe, the Filter, and the Cell according to Section 3.1.3 “Part assembly procedure of the sensor assembly”. The replacement heater strut assembly is shipped with a new CONTACT. 11.1.
SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE 11.1.7 Process Shutdown and Startup Follow these precautions to prevent sensor damage during process shutdown. Processes such as boiler and industrial furnace operations can entrain significant amounts of particulate and moisture in the gas stream that can be deposited on the zirconia cell during process shutdown and startup.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL Figure 11-5 LCD Contrast adjustment 11.2.3 Replacing Fuses The location of the converter fuse is shown in Figure 11-6. If the fuse blows, replace it using the following procedure. If a replaced fuse blows out immediately, there may be a problem in the circuitry. Thoroughly go over the circuits to find out why the fuse has blown.
SM425 INSTRUCTION MANUAL 11.0 INSPECTION and MAINTENANCE Figure 11-6 Location of the Converter Fuse To replace the fuse, follow these steps: 1. Turn off the power to the converter. 2. Remove the fuse from its holder. With an appropriate flat-blade screwdriver that just fits the holder cap slot (Figure 11-7), turn the fuse holder cap 90° counterclockwise. Remove the fuse along with the cap. Figure 11-7 Removing the Fuse 3.
11.0 INSPECTION and MAINTENANCE SM425 INSTRUCTION MANUAL Part number: 96751020 4. Place a new properly rated fuse in the holder together with the cap. Push and turn the cap clockwise 90° with the screwdriver to complete installation of the fuse. 11.3 Replacing Flowmeter in SM425CAL Autocalibration Unit NOTE: Mark original positioning of piping connections before disconnecting. Tighten an extra 5-10° when reconnecting and perform a liquid-leakage test. Refer to Figure 11-8 and Figure 11-9 1.
SM425 INSTRUCTION MANUAL 11.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING This section describes errors and alarms detected by the self-diagnostic function of the converter. This section also describes the check and restoration methods to use when problems other than the above occur. 12.1 Errors: Displays and Corrective Actions 12.1.1 What is an Error? An error is caused by an abnormality in the detector or the converter, e.g.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING Table 12-1 Types of Errors and Causes Error Type of error Error-1 Cell voltage failure The cell (sensor) voltage signal input to the converter falls below -50 mV Error-2 Heater temperature failure Error-3 A/D converter failure Memory failure The heater temperature does not rise during warm-up, or it falls below 730 °C or exceeds 780 °C after warm-up is completed.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL 12.1.2.2 Error-2: Heater Temperature Failure This error occurs if the detector heater temperature does not rise during warm-up or if the temperature falls below 730°C or exceeds 780°C after warm-up is completed. Alarm 10 (cold junction temperature alarm) or alarm 11 (thermocouple voltage alarm) may be generated during an Error-2 condition.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING If an Error-2 occurs immediately after power is supplied, the polarity of the thermo-couple input connection (TC+, TC-) in the converter may be reversed. Check detector connections. Possible causes of an Error-2 condition are shown below. 1. Faulty heater in the detector (heater wire breakage) 2. Faulty thermocouple in the detector 3. Faulty cold junction sensor located at the detector terminal block. 4. Failure of the converter electronics 5.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL 12.1.2.3 Error-3: A/D Converter Failure and Error-4: Writing-to-Memory Failure • A/D Converter Failure The A/D converter circuit has failed. • Writing-to memory Failure It is suspected that a failure has occurred in an operation writing to the memory (EEPROM) mounted in the electronic circuits inside the converter. < Troubleshooting and Corrective Actions > Turn off the power to the converter once and then restart the converter.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING Table 12-2 Types of Alarms and Causes Alarm Type of alarm Alarm 1 Oxygen concentration alarm Alarm 6 Zero-point calibration coefficient alarm Alarm 7 Span-point calibration coefficient alarm Alarm 8 EMF stabilization time-up Alarm 10 Cold junction temperature alarm Alarm 11 Thermocouple voltage alarm Alarm 13 Battery low alarm Cause Generated when measured oxygen concentration is outside of the user programmed range (refer to Section 8.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL 3. The oxygen sensor assembly is damaged. < Troubleshooting and Corrective Actions > 1. Confirm the following and correct as necessary. Then re-calibrate: a. The “Zero gas conc.” programmed in “Calibration setup” menu agrees with the concentration of zero gas in use. b. There are no leaks in the zero gas tubing. 2. No further action is required if the alarm clears following the re-calibration. 3.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING Figure 12-5 Detailed Data Display Figure 12-6 Calibration History 5. If deterioration of the sensor assembly has occurred abruptly, it may indicate the check valve, which prevents moisture in the process gas from getting into the calibration gas tubing, has failed. If process gas gets into the calibration gas tubing, it condenses and remains in the gas tubing.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL < Troubleshooting and Corrective Actions > 1. Confirm the following and correct as necessary. Then re-calibrate: a. The “Span gas conc.” programmed in “Calibration setup” menu agrees with the concentration of span gas in use. b. There are no leaks in the span gas tubing. 2. No further action is required if the alarm clears following the re-calibration. 3. The sensor cell assembly requires replacement if re-calibration did not clear the alarm.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING 3. A failure of the cold junction temperature sensor located at the detector terminal block occurred. 4. A failure of the electrical circuits inside the converter occurred. If “C.J.Temperature” is out of the -20°C to 150°C range, the following may be problem: 1. The temperature of the detector terminal block is out of the operating temperature range (-20°C to 150°C). 2.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL The operating temperature range of the Model ZO21D Detector is -10°C to 80°C (except for the hightemperature detector ZO21D-H). A cold junction temperature alarm for this analyzer is not generated until the temperature exceeds 155°C. If a Model ZO21D Detector is used, the ambient temperature of the terminal block must be controlled. 12.2.2.
SM425 INSTRUCTION MANUAL 12.0 TROUBLESHOOTING used for blowback scheduling. If you use this function check / correct the date and time every time you turn on the power until the alarm has been cleared. The battery can not be replaced by the user. Contact your Teledyne Monitor Labs service representative. Battery life varies with environmental conditions. * There is no battery draw if power is applied to the instrument continuously. Battery life is typically about ten years.
12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL increases. Visually inspect the sensor for cracks. If any crack is found, replace the sensor assembly. Cracks do not necessarily trigger an Error-1. (Note) Data such as cell robustness displayed in the detailed data display should also be used for deciding sensor quality. 12.3.2 Measured Value Lower Than Actual Value < Causes and Corrective Actions > 1. The process gas pressure decreases.
SM425 INSTRUCTION MANUAL APPENDIX A – SM425 Spare Parts List APPENDIX A – SM425 Spare Parts List 42500001 REV A A-1
SM425 INSITU O2 ANALYZER SPARE PARTS LIST REVISION HISTORY LTR A SM425SP RevA DESCRIPTION Initial Release Per ECO 6793 DATE 10/26/2009 INCORP CAD APPR JR Page 1 of 2
SM425 INSITU O2 ANALYZER SPARE PARTS LIST Part Number 53000242 96751016 96751017 96751019 96751020 Description 1.
