Trace Oxygen Analyzer OPERATING INSTRUCTIONS FOR MODEL 3000ZA Trace Oxygen Analyzer P/N M75739 4/10/04 DANGER Toxic gases and or flammable liquids may be present in this monitoring system. Personal protective equipment may be required when servicing this instrument. Hazardous voltages exist on certain components internally which may persist for a time even after the power is turned off and disconnected. Only authorized personnel should conduct maintenance and/or servicing.
3000ZA Copyright © 2003 Teledyne Analytical Instruments All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language or computer language in whole or in part, in any form or by any means, whether it be electronic, mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of Teledyne Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-1580.
Trace Oxygen Analyzer Specific Model Information The instrument for which this manual was supplied may incorporate one or more options not supplied in the standard instrument. Commonly available options are listed below, with check boxes. Any that are incorporated in the instrument for which this manual is supplied are indicated by a check mark in the box.
3000ZA Important Notice Model 3000ZA complies with all of the requirements of the Commonwealth of Europe (CE) for Radio Frequency Interference, Electromagnetic Interference (RFI/EMI), and Low Voltage Directive (LVD). The following International Symbols are used throughout the Instruction Manual. These symbols are visual indicators of important and immediate warnings and when you must exercise CAUTION while operating the instrument. See also the Safety Information on the next page.
Trace Oxygen Analyzer Safety Messages Your safety and the safety of others is very important. We have provided many important safety messages in this manual. Please read these messages carefully. A safety message alerts you to potential hazards that could hurt you or others. Each safety message is associated with a safety alert symbol. These symbols are found in the manual and inside the instrument.
3000ZA CAUTION: THE ANALYZER SHOULD ONLY BE USED FOR THE PURPOSE AND IN THE MANNER DESCRIBED IN THIS MANUAL. IF YOU USE THE ANALYZER IN A MANNER OTHER THAN THAT FOR WHICH IT WAS INTENDED, UNPREDICTABLE BEHAVIOR COULD RESULT POSSIBLY ACCOMPANIED WITH HAZARDOUS CONSEQUENCES. This manual provides information designed to guide you through the installation, calibration and operation of your new analyzer. Please read this manual and keep it available.
Trace Oxygen Analyzer This is a general purpose instrument designed for use in a non-hazardous area. It is the customer's responsibility to ensure safety especially when combustible gases are being analyzed since the potential of gas leaks always exist. The customer should ensure that the principles of operation of this equipment is well understood by the user.
3000ZA Table of Contents Safety Messages.............................................................. v 1.1 1.2 1.3 1.4 1.5 1.6 Overview Typical Applications Main Features of the Analyzer Model Designations Front Panel (Operator Interface) Rear Panel (Equipment Interface) 1 1 1 2 3 5 Operational Theory.......................................................... 8 2.1 Introduction 2.2 ZrO2 Sensor 2.2.1 Principles of Operation 2.3 Sample System 2.4 Zirconium Oxide Sensor Application Notes 2.
Trace Oxygen Analyzer Operation ....................................................................... 28 4.1 Introduction 4.2 Using the Data Entry and Function Buttons 4.3 The System Function 4.3.1 Tracking the Oxygen Readings during Calibration 4.3.2 Setting up an Auto-Cal 4.3.3 Password Protection 4.3.3.1 Entering the Password 4.3.3.2 Installing or Changing the Password 4.3.4 Logout 4.3.5 System Self-Diagnostic Test 4.3.6 Version Screen 4.3.7 Showing Negative Oxygen Readings 4.
3000ZA 5.3 Fuse Replacement 5.4 System Self Diagnostic Test 5.5 Major Internal Components 5.6 Cleaning 5.7 Troubleshooting 53 54 55 56 56 Appendix ........................................................................58 A-1 A-2 A-3 A-4 A.5 Specifications Recommended 2-Year Spare Parts List Drawing List 19-inch Relay Rack Panel Mount Application Notes 58 60 61 61 62 Index ...............................................................................
Trace Oxygen Analyzer List of Figures Figure 1-1: Model 3000ZA Front Panel Figure 1-2: Model 3000ZA Rear Panel Figure 2-1: Model 3000ZA Sample System Figure 2-2: Flow Diagram with Options Figure 2-3: Component Location Figure 2-4: Electronic Block Diagram Figure 3-1: Front Panel Figure 3-2: Required Front Door Clearance Figure 3-3: Rear Panel Figure 3-4: Equipment Interface Connector Pin Arrangement Figure 3-5: Remote Probe Connections Figure 3-6: FET Series Resistance Figure 4-1: Hierarchy of Available F
3000ZA List of Tables Table 3-1: Analog Output Connections Table 3-2: Alarm Relay Contact Pins Table 3-3: Remote Calibration Connections Table 3-4: Range ID Relay Connections Table 3-5: Commands via RS-232 Input Table 3-6: Required RS-232 Options Table 4-1: Output Signals Table 4-2: Range ID Output Voltage Table 5-1: Self-test Failure Codes Table 5-2: Troubleshooting Teledyne Analytical Instruments 20 21 22 23 25 25 49 50 54 56 xii
Trace Oxygen Analyzer Introduction Introduction 1.1 Overview The Teledyne Analytical Instruments Model 3000ZA Trace Oxygen Analyzer is a versatile microprocessor-based instrument for detecting oxygen at the parts-per-million (ppm) level in a variety of gases. This manual covers the Model 3000ZA General Purpose flushpanel and/or rack-mount units with CE mark. These units are for indoor use in a non-hazardous environment. 1.
Introduction 3000ZA offset and six months warranty and an expected lifetime of more than three years. 0-1 ppm range is possible too. • No reference gas required • Versatile analysis over a wide range of applications. • Microprocessor based electronics: 8-bit CMOS microprocessor with 32 kB RAM and 128 kB ROM. • Three user definable output ranges (from 0-1 ppm through 0-250 ppm) allow best match to users process and equipment.
Trace Oxygen Analyzer Introduction 3000ZA-M: This model has current output signals (4-20mA) for ppm range and range ID, in addition to voltage outputs. 3000ZA-V: Gas flow through the cell block in this model is driven by vacuum downstream from the cell block instead of upstream pressure. The internal restrictor is located downstream from the cell block to support this configuration. All other standard features are present in this model. 1.
Introduction 3000ZA Function Keys: Six touch-sensitive membrane switches are used to change the specific function performed by the analyzer: • Analyze Perform analysis for oxygen content of a sample gas. • System Perform system-related tasks (described in detail in chapter 4, Operation.). • Span Span calibrate the analyzer. • Zero Zero calibrate the analyzer. • Alarms Set the alarm setpoints and attributes. • Range Set up the 3 user definable ranges for the instrument.
Trace Oxygen Analyzer Introduction Standby Button : The Standby turns off the display and outputs but circuitry is still operating. CAUTION: THE POWER CABLE MUST BE UNPLUGGED TO FULLY DISCONNECT POWER FROM THE INSTRUMENT. WHEN CHASSIS IS EXPOSED OR WHEN ACCESS DOOR IS OPEN AND POWER CABLE IS CONNECTED, USE EXTRA CARE TO AVOID CONTACT WITH LIVE ELECTRICAL CIRCUITS.
Introduction 3000ZA • Power Connection Universal AC power source. • Gas Inlet and Outlet One inlet (must be externally valved) and one exhaust out. Three inlets when option “C” is ordered. • 9-Pin RS-232 Port • 50-Pin Equipment Interface Port Serial digital concentration signal output and control input. Analog Outputs: 0–1 VDC oxygen concentration plus 0-1 V dc range ID Alarm Connections: 2 concentration alarms and 1 system alarm.
Trace Oxygen Analyzer Introduction scheduled calibrations can vary 2-3 % per day.
Operational Theory 3000ZA Operational Theory 2.1 Introduction The analyzer is composed of three subsystems: 1. Zirconium Oxide (ZrO2) Sensor 2. Sample System 3. Electronic Signal Processing, Display and Control The sample system is designed to accept the sample gas and transport it through the analyzer without contaminating or altering the sample prior to analysis. The ZrO2 sensor is a device that translates the amount of oxygen present in the sample into an electrical current.
Trace Oxygen Analyzer Operational Theory 2.3 Sample System The sample system delivers gases to the ZrO2 sensor from the analyzer rear panel inlet. Depending on the mode of operation either sample or calibration gas is delivered. The Model 3000ZA sample system is designed and fabricated to ensure that the oxygen concentration of the gas is not altered as it travels through the sample system.
Operational Theory 3000ZA Figure 2-2: Flow Diagram with Options 2.4 Zirconium Oxide Sensor Application Notes The following sample gases require conditioning prior to entering the sensor: • Flammable gases such as methane, alcohol and carbon monoxide may cause a measurement error. They must be filtered from the sample gas before entering the cell. • Gases containing halogen atoms (F, Cl, Br, etc.) such as Freon, must be filtered before entering the cell.
Trace Oxygen Analyzer Operational Theory The signal processing electronics including the microprocessor, analog to digital, and digital to analog converters are located on the motherboard at the bottom of the case. The preamplifier board is mounted on top of the motherboard as shown in the figure. These boards are accessible after removing the back panel. Figure 2-4 is a block diagram of the analyzer electronics. In the presence of oxygen the cell generates a current.
Operational Theory 3000ZA Figure 2-3: Component Location Teledyne Analytical Instruments 12
Trace Oxygen Analyzer Operational Theory Figure 2-4: Electronic Block Diagram Teledyne Analytical Instruments 13
Installation 3000ZA Installation Installation of the Model 3000ZA Analyzer includes: 1. Unpacking 2. Mounting 3. Gas connections 4. Electrical connections 5. Installing the sensor 6. Testing the system. 3.1 Unpacking the Analyzer The analyzer is shipped with all the materials you need to install and prepare the system for operation. Carefully unpack the analyzer and inspect it for damage. Immediately report any damage to the shipping agent. 3.
Trace Oxygen Analyzer Installation Figure 3-1: Front Panel of the Model 3000TA (Model 3000ZA similar) All operator controls, except the flow control needle valve, are mounted on the control panel, which is hinged on the left edge and doubles as the door that provides access to the sensor and cell block inside the instrument. The door latch is spring loaded and will swing open when the button in the center of the latch (upper right corner) is pressed all the way in with a narrow gauge tool (less than 0.
Installation 3000ZA 3.3 Rear Panel Connections Figure 3-3 shows the Model 3000ZA rear panel. There are ports for gas, power, and equipment interface. The Zero In and Span In ports are not included on the standard model but are available as options. Figure 3-3: Rear Panel of the Model 3000ZA with Span and Zero Ports 3.3.1 Gas Connections Before using this instrument, it should be determined if the unit will be used for pressurized service or vacuum service and low pressure applications.
Trace Oxygen Analyzer Installation pressure applications (5-50 psig) use the restrictor that has a blue sticker on the body. • Pressurized service: Connect the restrictor with the blue dot to the Sample In port. The small circular orifice should face AWAY from the back of the unit (against the direction of gas flow). Note: Remove the blue sticker from the restrictor before using. • Low pressure applications: Connect the restrictor without the blue sticker in the same manner (less than 5 psig).
Installation 3000ZA If greater sample flow is required for improved response time, install a bypass in the sampling system upstream of the analyzer input. EXHAUST OUT: Exhaust connections must be consistent with the hazard level of the constituent gases. Check local, state, and federal laws, and ensure that the exhaust stream vents to an appropriately controlled area, if required. ZERO IN and SPAN IN (Optional): These are additional ports for inputting span and zero gas.
Trace Oxygen Analyzer Installation Fuse Installation: The fuse block, at the right of the power cord receptacle, accepts US or European size fuses. A jumper replaces the fuse in whichever fuse receptacle is not used. Fuses are not installed at the factory. Be sure to install the proper fuse as part of installation. (See Fuse Replacement in Chapter 5, Maintenance.) 3.3.2.2 50-PIN EQUIPMENT INTERFACE CONNECTOR Figure 3-4 shows the pin layout of the Equipment Interface Connector.
Installation 3000ZA Table 3-1: Analog Output Connections Pin Function 3 + Range ID, 4-20 mA, floating 4 – Range ID, 4-20 mA, floating 5 + ppm Range, 4-20 mA, floating (optional) 6 – ppm Range, 4-20 mA, floating (optional) 8 + Range ID, 0-1 VDC 23 – Range ID, 0-1 V dc, negative ground 24 + ppm Range, 0-1 VDC 7 – ppm Range, 0-1 VDC, negative ground Alarm Relays: The nine alarm-circuit connector pins connect to the internal alarm relay contacts.
Trace Oxygen Analyzer Installation • Actuates when DC power supplied to circuits is unacceptable in one or more parameters. Permanently configured as failsafe and latching. Cannot be defeated. Actuates if self test fails. • (Reset by pressing button to remove power. Then press again and any other button EXCEPT System to resume. • Further detail can be found in Chapter 4, Section 4-5.
Installation 3000ZA Span: Floating input. 5 to 24 V input across the + and – pins puts the analyzer into the Span mode. Either side may be grounded at the source of the signal. 0 to 1 volt across the terminals allows Span mode to terminate when done. A synchronous signal must open and close external span valve appropriately. See Figure 3-5 Remote Probe Connector. (The –C option internal valves operate automatically.) Cal Contact: This relay contact is closed while analyzer is spanning and/or zeroing.
Trace Oxygen Analyzer Installation 3. When CRC opens again, send a span command until the CRC closes. (The CRC will quickly close.) 4. When the CRC closes, remove the span command. When CRC opens again, zero and span are done, and the sample is being analyzed. Note: The Remote Valve connections (described below) provides signals to ensure that the zero and span gas valves will be controlled synchronously.
Installation 3000ZA Figure 3-5: Remote Probe Connections The voltage from these outputs is nominally 0 V for the OFF and 15 VDC for the ON conditions. The maximum combined current that can be pulled from these output lines is 100 mA. (If two lines are ON at the same time, each must be limited to 50 mA, etc.) If more current and/or a different voltage is required, use a relay, power amplifier, or other matching circuitry to provide the actual driving current.
Trace Oxygen Analyzer 3.3.2.3 Installation RS-232 PORT The digital signal output is a standard, full duplex RS-232 serial communications port used to connect the analyzer to a computer, terminal, or other digital device. It requires a standard 9-pin D connector. The output data is status information, in digital form, updated every two seconds.
Installation 3000ZA Parity Stop Bits Message Interval none 1 2 seconds. When CRC opens again, zero and span are done, and the sample is being analyzed. Range ID Relays: There are three dedicated Range ID relay contacts. Three ranges are assigned to relays in ascending order—Low range is assigned to Range 1 ID, Medium range is assigned to Range 2 ID, and High range is assigned to Range 3 ID. Network I/O: A serial digital input/output for local network protocol.
Trace Oxygen Analyzer Installation • Check the integrity and accuracy of the gas connections. Make sure there are no leaks. • Check the integrity and accuracy of the electrical connections. Make sure there are no exposed conductors. • Check that inlet sample pressure is within the accepted range (see Section 3.3.1). • Power up the system, and test it by repeating the SelfDiagnostic Test as described in Chapter 4, Section 4.3.5.
Operation 3000ZA Operation 4.1 Introduction Once the analyzer has been installed, it can be configured for your application. To do this you will: • Set system parameters. • Establish a security password, if desired, requiring Operator to log in. • Establish and start an automatic calibration cycle, if desired. • Calibrate the instrument. • Define the three user selectable analysis ranges, then choose autoranging or select a fixed range of analysis, as required.
Trace Oxygen Analyzer Operation 4.2 Using the Data Entry and Function Buttons Data Entry Buttons: The __ arrow buttons select options from the menu currently being displayed on the VFD screen. The selected option blinks. When the selected option includes a modifiable item, the __ arrow buttons can be used to increment or decrement that modifiable item. The Enter button is used to accept any new entries on the VFD screen.
Operation 3000ZA Figure 4-1: Hierarchy of Available Functions Any function can be selected at any time by pressing the appropriate button (unless password restrictions apply). The order as presented in this manual is appropriate for an initial setup. Each of these functions is described in greater detail in the following procedures. The VFD screen text that accompanies each operation is reproduced, at the appropriate point in the procedure, in a Ariel Narrow Bold type style.
Trace Oxygen Analyzer Operation 4.3 The System Function The sub fuctions of the System function are described below. Specific procedures for their use follow the descriptions: • Auto-Cal: Used to define an automatic calibration sequence and/or start an Auto-Cal. • PSWD: Security can be established by choosing a 5 digit password (PSWD) from the standard ASCII character set. (See Installing or Changing the Password, below, for a table of ASCII characters available.
Operation 4.3.1 3000ZA Tracking the Oxygen Readings during Calibration and Alarm delay The user has the option of setting the preference as to whether the analog outputs track the display readings during calibration or not. To set the preference, press the System key once and the first System menu will appear in the VFD display: TRAK/HLD Auto-Cal PSWD Logout More TRAK/HLD should be blinking.
Trace Oxygen Analyzer Operation The factory default is three minutes, but the delay time is programmable. To adjust to delay time use the Left or Right arrow keys. When the time displayed on the second line blinks, it can be adjusted by Pressing the Up or Down keys to increase or decrease its value. The minimum delay is 1 minute, the maximum is 30. This preference is stored in non-volatile memory so that it is recovered if power is removed from the instrument. 4.3.
Operation 3000ZA Zero) OFF/ON field. Use __ arrows to set the OFF/ON field to ON. You can now turn these fields ON because there is a nonzero span interval defined. 4.3.3 Password Protection If a password is assigned, then setting the following system parameters can be done only after the password is entered: span and zero settings, alarm setpoints, analysis range definitions, switching between autoranging and manual override, setting up an auto-cal, and assigning a new password.
Trace Oxygen Analyzer Operation The screen prompts you to enter the current password. If you are not using password protection, press Enter to accept TETAI as the default password. If a password has been previously installed, enter the password using the __ arrow keys to scroll back and forth between letters, and the __ arrow keys to change the letters to the proper password. Press Enter to enter the password.
Operation 3000ZA Enter the password using the __ arrow keys to move back and forth between the existing password letters, and the __ arrow keys to change the letters to the new password. The full set of 94 characters available for password use are shown in the table below.
Trace Oxygen Analyzer Operation If an alarm is tripped, the second line will change to show which alarm it is: 0.0 ppm Anlz AL—1 Note: If you log off the system using the logout function in the system menu, you will now be required to re-enter the password to gain access to Span, Zero, Alarm, and Range functions. 4.3.4 Logout The Logout function provides a convenient means of leaving the analyzer in a password protected mode without having to shut the instrument off.
Operation 3000ZA TRAK/HLD Auto—Cal PSWD Logout More Use the __ arrow keys to blink More, then press Enter. Version Self—Test Use the __ arrow keys again to move the blinking to the Self–Test function. The screen will follow the running of the diagnostic. RUNNING DIAGNOSTIC Testing Preamp — 83 During preamp testing there is a countdown in the lower right corner of the screen. When the testing is complete, the results are displayed.
Trace Oxygen Analyzer Operation TRAK/HLD Auto—Cal PSWD Logout More Use the __ arrow keys to blink More, then press Enter. Version Self—Test Show_Negative=NO Use the __ arrow keys and select “ Show_Negative = NO”. Use the __ arrow keys to toggle from NO to YES. Press the Escape key twice to return to the analyze mode. This preference is stored in non-volatile memory so the configuration is remembered after a power shutdown.
Operation 3000ZA If you are using password protection, you will need to enter your password to gain access to either of these functions. Follow the instructions in sections 4.3.3 to enter your password. Once you have gained clearance to proceed, you can enter the Zero or Span function. 4.4.1 Zero Cal The Zero button on the front panel is used to enter the zero calibration function. Zero calibration can be performed in either the automatic or manual mode.
Trace Oxygen Analyzer Operation The zeroing process will automatically conclude when the output is within the acceptable range for a good zero. Then the analyzer automatically returns to the Analyze mode. 4.4.1.2 MANUAL MODE ZEROING Press Zero to enter the Zero function. The screen that appears allows you to select between automatic or manual zero calibration. Use the __ keys to toggle between AUTO and MAN zero settling. Stop when MAN appears, blinking, on the display.
Operation 3000ZA CELL FAIL/ ZERO HIGH Before replacing the cell: a. Check your span gas to make sure it is within specifications. b. Check for leaks up-stream from the cell, where oxygen may be leaking into the system. If there are no leaks and the span gas is within specification, replace the cell as described in chapter 5, Maintenance. 4.4.2 Span Cal The Span button on the front panel is used to span calibrate the analyzer.
Trace Oxygen Analyzer Operation Use the __ arrow keys to enter the oxygen-concentration mode. Use the __ arrow keys to blink the digit you are going to modify. Use the __ arrow keys again to change the value of the selected digit. When you have finished typing in the concentration of the span gas you are using, press Enter to begin the Span calibration. #### ppm Span Slope=#### ppm/s The beginning span value is shown in the upper left corner of the display.
Operation 3000ZA Press Enter to enter the span value into the system and begin the span calibration. Once the span has begun, the microprocessor samples the output at a predetermined rate. It calculates the difference between successive samplings and displays this difference as a Slope on the screen. It takes several seconds for the first Slope value to display. Slope indicates the rate of change of the Span reading. It is a sensitive indicator of stability.
Trace Oxygen Analyzer Operation 4.5 The Alarms Function The Model 3000ZA is equipped with 2 fully adjustable concentration alarms and a system failure alarm. Each alarm has a relay with a set of form “C" contacts rated for 3 amperes resistive load at 250 VAC. See Table 3-2 in Chapter 3, Installation and/or the Interconnection Diagram included at the back of this manual for relay terminal connections. The system failure alarm has a fixed configuration as described in chapter 3 Installation.
Operation 3000ZA back to non-alarm conditions. This mode requires an alarm to be recognized before it can be reset. In the non-latching mode, the alarm status will terminate when process conditions revert to non-alarm conditions. 8. Are either of the alarms to be defeated? 9. The defeat alarm mode is incorporated into the alarm circuit so that maintenance can be performed under conditions which would normally activate the alarms. 10. The defeat function can also be used to reset a latched alarm.
Trace Oxygen Analyzer Operation To set the other parameters use the __ arrow keys to move the blinking over to the desired parameter. Then use the __ arrow keys to change the parameter. Once the parameters for alarm 1 have been set, press Alarms again, and repeat this procedure for alarm 2 (AL–2). To reset a latched alarm, go to Dft– and then press either _ two times or _ two times. (Toggle it to Y and then back to N.) —or— Go to Ltch– and then press either _ two times or _ two times.
Operation 3000ZA L—10 M—100 H—250 Mode—AUTO Use the __ arrow keys to blink the range to be set: low (L), medium (M), or high (H). Use the __ arrow keys to enter the upper value of the range (all ranges begin at 0 ppm). Repeat for each range you want to set. Press Enter to accept the values and return to Analyze mode. (See note below.
Trace Oxygen Analyzer Operation as established by the operator for that particular range, the output saturates at 1 VDC(or 20 mA). However, the digital readout and the RS-232 output continue to read the true value of the oxygen concentration regardless of the analog output range. 4.7 The Analyze Function Normally, all of the functions automatically switch back to the Analyze function when they have completed their assigned operations.
Operation 3000ZA 80 0.8 16.8 90 0.9 18.4 100 1.0 20.0 The analog output signal has a voltage which depends on the oxygen concentration AND the currently activated analysis range. To relate the signal output to the actual concentration, it is necessary to know what range the instrument is currently on, especially when the analyzer is in the autoranging mode. To provide an indication of the range, a second pair of analog output terminals are used.
Trace Oxygen Analyzer Teledyne Analytical Instruments Operation 51
Maintenance 3000ZA Maintenance 5.1 Routine Maintenance Aside from normal cleaning and checking for leaks at the gas connections, routine maintenance is limited to replacing the sensor and fuses, and recalibration. For recalibration, see Section 4.4 Calibration. WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS MANUAL. 5.2 Cell Replacement The ZrO2 sensor is a sealed transducer with no electrolyte to change or electrodes to clean. When the cell reaches the end of its useful life, it is replaced.
Trace Oxygen Analyzer Maintenance 4. Remove the old sensor and install a new sensor by matching the orientation notch on the sensor to the silkscreen on the sensor holder. Figure 5-1: Replacing the ZrO2 Sensor 5.3 Fuse Replacement 1. Place small screwdriver in notch, and pry cover off, as shown in Figure 5-2.
Maintenance 3000ZA 2. To change between American and European fuses, remove the single retaining screw, flip Fuse Block over 180 degrees, and replace screw. 3. Replace fuse as shown in Figure 5-3. 4. Reassemble Housing as shown in Figure 5-2. American Fuses European Fuses Figure 5-3: Installing Fuses 5.4 System Self Diagnostic Test 1. Press the System button to enter the system mode. 2. Use the __ arrow keys to move to More, and press Enter. 3.
Trace Oxygen Analyzer Maintenance Preamp 0 1 2 3 OK Zero too high Amplifier output doesn't match test input Both Failed 5.5 Major Internal Components The zirconium sensor is accessed by unlatching and swinging open the front panel, as described earlier. Other internal components are accessed by removing the rear panel and sliding out the entire chassis. See Figure 5-4, below.
Maintenance • 3000ZA Analysis Section • Zirconium oxide sensor • Cell block • Sample system • Power Supply • Microprocessor • Displays • • 5 digit LED meter • 2 line, 20 character, alphanumeric, VFD display RS-232 Communications Port See the drawings in the Drawings section in back of this manual for details. 5.6 Cleaning If instrument is unmounted at time of cleaning, disconnect the instrument from the power source. Close and latch the front-panel access door.
Trace Oxygen Analyzer Maintenance analyzer. 2. If erratic behavior continues, replace sensor. Atmospheric oxygen diffusing through vent and altering the oxygen level the sensor sees Inaccurate zero operation (i.e. user has zeroed the instrument using a gas concentration much higher than normal for a zero gas). Increase flow rate and/or length of vent tubing to dilute or minimize oxygen diffusion from vent to sensor. Turn analyzer off, then back on again.
Appendix 3000ZA Appendix A-1 Specifications Packaging: General Purpose • Flush panel mount (Standard) • Relay rack mount. Contains either one or two instruments in one 19" relay rack mountable plate (Optional). Sensor: Zirconium oxide sensor. Cell Block: Nylon Sample System: All wetted parts of 316 stainless steel.
Trace Oxygen Analyzer Appendix Power: Universal power supply 85-250 V ac, at 47-63 Hz. Operating Temperature: 5-35 °C Accuracy: ±2% of full scale at constant temperature (at ca;obrated ramge). ±5% of full scale over operating temperature range, except 0-1 ppm analysis range, once thermal equilibrium is reached. ±0.2 ppm on 0-1 ppm analysis range, once thermal equilibrium is reached. Analog outputs: 0-1 VDC percent-of-range, 0-1 VDC range ID.
Appendix 3000ZA A-2 Recommended 2-Year Spare Parts List Qty. Part Number Description 1 C65507A Back Panel Board 1 C62371-A Front Panel Board 1 C75734A Trace Preamplifier Board 1 C73870-A Main Computer Board 1 F10 Fuse, 2A, 250V 3AG Slow Blow 2 F1296 Fuse, 2A, 250V 5x20mm Slow Blow 1 A68314 Back Panel Connector Kit 1 A68729 Restrictor kit A minimum charge is applicable to spare parts orders.
Trace Oxygen Analyzer Appendix A-3 Drawing List D-75739 Final Assembly D-75738 Outline Drawing A-4 19-inch Relay Rack Panel Mount Figure A-1: Single and Dual 19" Rack Mounts (dimensions in mm) Teledyne Analytical Instruments
Appendix 3000ZA A.5 Application Notes 3000 SERIES ANALYZERS APPLICATION NOTES ON RESTRICTORS, PRESSURES, AND FLOW RECOMMENDATIONS The 3000 series analyzers require reasonably regulated sample pressures. While the 3000 analyzers are not sensitive to variations of incoming pressure (provided they are properly vented to atmospheric pressure) the pressure must be maintained to provide a useable flow rate through the analyzer. Any line attached to sample vent should be 1/4 or larger in diameter.
Trace Oxygen Analyzer Appendix positive pressure applications as well as vacuum service applications (see manual for installation instructions). The standard restrictor (BLUE DOT) is recommended for pressures between 5 and 50 PSIG. For positive low pressure application (5 psig or less) the unmarked restrictor is better suited . For unpressurized sample applications the marked restrictor should be used and configured for vacuum service.
Appendix 3000ZA To improve the system response, a by-pass can be added to increase the sample flow rate to the analyzer by a factor of ten. A by-pass provides a sample flow path around the analyzer of 2 - 18 SCFH. typically. CALIBRATION GAS: 3000 series analyzer requirements for units with Auto-Cal options are as follows: The customer must supply control valves (or restrictors) for any SPAN or ZERO gas source which is attached to the Auto-Cal ports.
Trace Oxygen Analyzer 1 SCFH = 0.
Index 3000ZA Index AC power connection, 6 accuracy, 58 address, 59 alarm, 57 concentration, 2, 6, 44 configuration, 44 freeze, 31 relay contact pins, 20 relays, 19 setpoint, 45 system failure, 2, 6, 10, 20, 44 threshold 1, 19 threshold 2, 19 ALARMS key, 28 alphanumeric display, 3 amplifier PCB, 10 analog output, 2, 6, 10, 18, 48, 58 freeze, 31 analog output connections, 19 analog to digital converter, 10 analyze function, 48 ANALYZE key, 28 analyzer components, 54 analyzer functions, 4 anode, 7 applicatio
Trace Oxygen Analyzer exhaust out, 16, 17 external control, 6 external valves, 22 failsafe, 44 failure codes, 53 features, 1 FET, 23 fixed range, 46, 47 flow range, 16 flow rate, 61 flow restriction devic, 62 flowmeter, 8, 16 flowmeter window, 3 flush panel mount, 13 form C contacts, 44 form C relay contacts, 19 front panel, 3, 14 function hierarchy, 29 fuse, 53 fuse block, 17 fuse block cover, 52 fuse installation, 18 fuse replacement, 52 gas conditioning, 9 gas connections, 6 general purpose instrument,
Index 3000ZA relay connections, 22 relay contacts, 22 range ID contact, 6 range ID relay contacts, 25 range identification, 2 RANGE key, 28 readout, 4 rear panel, 5, 15 rear panel removal, 54 recovery, 49 remote calibration connections. See calibration remote probe, 6 remote probe connections, 23 remote valve, 22 reset latched alarm, 45 response time, 17, 57, 61 restrictor, 15.
Trace Oxygen Analyzer Teledyne Analytical Instruments Index
