Instruction Manual Model EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters [Style: S2] IM 1C22J1-01E IM 1C22J1-01E Yokogawa Electric Corporation 10th Edition
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CONTENTS CONTENTS 1. INTRODUCTION ............................................................................................ 1-1 WARRANTY .................................................................................................. 1-2 2. HANDLING CAUTIONS ................................................................................ 2-1 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Model and Specifications Check ......................................................... 2-1 Unpacking ...................
CONTENTS 6. OPERATION .................................................................................................. 6-1 6.1 6.2 Preparation for Starting Operation ...................................................... 6-1 Zero Point Adjustment ........................................................................ 6-2 6.2.1 When you can obtain Low Range Value from actual measured value of 0% (0 kPa, atmospheric pressure); .............. 6-2 6.2.
CONTENTS 8.4 Disassembly and Reassembly ............................................................ 8-3 8.4.1 Replacing the Integral Indicator ................................................... 8-3 8.4.2 Replacing the CPU Assembly ...................................................... 8-4 8.5 Troubleshooting ................................................................................... 8-5 8.5.1 Basic Troubleshooting .................................................................. 8-5 8.5.
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1. INTRODUCTION 1. INTRODUCTION j Safety Precautions • For the protection and safety of the operator and the instrument or the system including the instrument, please be sure to follow the instructions on safety described in this manual when handling this instrument. In case the instrument is handled in contradiction to these instructions, Yokogawa does not guarantee safety. Thank you for purchasing the DPharp electronic pressure transmitter.
1. INTRODUCTION WARRANTY WARNING • The warranty shall cover the period noted on the quotation presented to the purchaser at the time of purchase. Problems occurred during the warranty period shall basically be repaired free of charge. • Instrument installed in the process is under pressure. Never loosen or tighten the flange bolts as it may cause dangerous spouting of process fluid.
2. HANDLING CAUTIONS 2. HANDLING CAUTIONS This chapter describes important cautions regarding how to handle the transmitter. Read carefully before using the transmitter. The EJA Series pressure transmitters are thoroughly tested at the factory before shipment. When the transmitter is delivered, visually check them to make sure that no damage occurred during shipment. Also check that all transmitter mounting hardware shown in Figure 2.1 is included.
2. HANDLING CAUTIONS (b) Ambient Atmosphere Avoid installing the transmitter in a corrosive atmosphere. If the transmitter must be installed in a corrosive atmosphere, there must be adequate ventilation as well as measures to prevent intrusion or stagnation of rain water in conduits. (c) Shock and Vibration Select an installation site suffering minimum shock and vibration (although the transmitter is designed to be relatively resistant to shock and vibration).
2. HANDLING CAUTIONS 4) After completing the test and being very careful not to touch exposed conductors disconnect the insulation tester and connect a 100 kΩ resistor between the grounding terminal and the shortcircuiting SUPPLY terminals. Leave this resistor connected at least one second to discharge any static potential. Do not touch the terminals while it is discharging. • Dielectric Strength Test 1) Short-circuit the + and – SUPPLY terminals in the terminal box.
2. HANDLING CAUTIONS • Dust-tight conduit seal must be used when installed in a Class II, III, Group E, F and G environments. • Associated apparatus manufacturer’s installation drawing must be followed when installing this apparatus. • The maximum power delivered from the barrier must not exceed 0.9 W. • Note a warning label worded “SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY,” and “INSTALL IN ACCORDANCE WITH DOC. No. IFM012-A12 P.1 and 2.” Note 4.
2. HANDLING CAUTIONS • Intrinsically Safe for Class I, Division 1, Groups A, B, C & D. Class II, Division 1, Groups E, F & G and Class III, Division 1 Hazardous Locations. • Nonincendive for Class I, Division 2, Groups A, B, C & D, Class II, Division 2, Groups F & G, and Class III, Hazardous Locations. (not use Safety Barrier) • Encl. “Type 4X” • Temperature Class: T4 • Ambient temperature: –40 to 60°C • Process Temperature: 120°C max. Note 2.
2. HANDLING CAUTIONS Non-Hazardous Hazardous Locations Division 1 Locations Non-hazardous Location Equipment 42 V DC Max. 4 to 20 mA DC Signal 50 cm Max. Sealing Fitting Conduit EJA Series Non-Hazardous Hazardous Locations Division 2 Locations Non-hazardous Location Equipment 42 V DC Max. 4 to 20 mA DC Signal Sealing Fitting Note 2. Entity Parameters • Intrinsically safe rating of the transmitters are as follows.
2. HANDLING CAUTIONS • Supply voltage: 42 V dc max. • Output Signal: 4 to 20 mA • Ambient Temperature: –40 to 80°C Note 2. Wiring • All wiring shall comply with the Australian Standard. Note 3. Operation • Keep the “CAUTION” label attached to the transmitter. CAUTION: AMBIENT TEMPERATURE ABOVE 75 DEG C SELECT SUITABLE CABLE. DISCONNECT POWER AND WAIT 1 MINUTE BEFORE REMAKING COVER.
2. HANDLING CAUTIONS c. IEC (KEMA) Type of Protection “n” Caution for IEC (KEMA) Type of Protection “n.” Note 1. Model EJA Series pressure transmitters with optional code /KU1 for potentially explosive atmospheres. • Type of Protection and Marking Code: Ex nA IIC T4 • Temperature Class: T4 • Process Temperature: 120°C max. • Ambient Temperature: –40 to 60°C Note 2. Electrical Data • Supply and output circuit ≤ 30 V dc, 165 mA (terminals + and –) Note 3.
2. HANDLING CAUTIONS 2.10 EMC Conformity Standards For EMI (Emission): EN55011, AS/NZS 2064 1/2 For EMS (Immunity): EN50082–2 NOTE YOKOGAWA recommends customer to apply the Metal Conduit Wiring or to use the twisted pair Shield Cable for signal wiring to conform the requirement of EMC Regulation, when customer installs the EJA Series Transmitters to the plant.
3. COMPONENT NAMES 3. COMPONENT NAMES Transmitter section* *See below for details. Capillary tube Cover flange Diaphragm seal Diaphragm Flange Pressure-detector section F0301.EPS Figure 3.1.
4. INSTALLATION 4. INSTALLATION 4.1 Precautions IMPORTANT j Before installing the transmitter, read the cautionary notes in Section 2.4, “Selecting the Installation Location.” For additional information on the ambient conditions allowed at the installation location, refer to Subsection 9.1 “Standard Specifications.” • During the diaphragm seal installation, ensure as far as possible that no seal liquid head is applied to the diaphragm seal. • Exercise care so as not to damage diaphragm surface.
4. INSTALLATION Vertical pipe mounting IMPORTANT The transmitter should be installed at least 700 mm (when the model code of the material of the wetted part is H, at least 1300 mm) below the process connection to ensure a positive head pressure of fill fluid. If it can not be installed at least 700 mm below the process connection, please use the equation below: h= (P–P0)3dHg 37.
4. INSTALLATION 4.4 Affixing the Teflon Film 4.5 Rotating Transmitter Section The FEP Teflon option includes a teflon film and fluorinated oil. Before mounting the diaphragm seal to the process flange, affix the teflon film as follows : The DPharp transmitter section can be rotated in 90° segments. IMPORTANT (1) Position the diaphragm seal so that the diaphragm is in a upward position. (2) Pour the fluorinated oil on the diaphragm and gasket area covering it completely and evenly.
5. WIRING 5. WIRING 5.1 Wiring Precautions CAUTION If the transmitter is flameproof and the ambient temperature is 50°C or more, use cables having a maximum allowable heat resistance of at least 75°C in consideration of the instrument's generation of heat or the cables' self-heating. IMPORTANT • Lay wiring as far as possible from electrical noise sources such as large capacity transformers, motors, and power supplies. • Remove electrical connection dust cap before wiring.
5. WIRING 5.3.3 BRAIN TERMINAL BT200 Connection Connect the BT200 to the SUPPLY + and – terminals (Use hooks). Transmitter terminal box + Power supply – Ignore the polarity since the BT200 is AC-coupled to the terminal box. BT200 F0503.EPS 5.4.1 Loop Configuration Since the DPharp uses a two-wire transmission system, signal wiring is also used as power wiring. DC power is required for the transmitter loop. The transmitter and distributor are connected as shown below.
5. WIRING 5.4.2 Wiring Installation (1) General-use Type and Intrinsically Safe Type Make cable wiring using metallic conduit or waterproof glands. • Apply a non-hardening sealant to the terminal box connection port and to the threads on the flexible metal conduit for waterproofing. • Measure the cable outer diameter in two directions to within 1 mm. • Calculate the average of the two diameters, and use packing with an internal diameter nearest to this value (see Table 5.4.2). Table 5.4.
, 5. WIRING j Flameproof metal conduit wiring • A seal fitting must be installed near the terminal box connection port for a sealed construction. • Apply a non-hardening sealant to the threads of the terminal box connection port, flexible metal conduit and seal fitting for waterproofing. 5.6 Power Supply Voltage and Load Resistance When configuring the loop, make sure that the external load resistance is within the range in the figure below.
6. OPERATION 6. OPERATION 6.1 Preparation for Starting Operation The Model EJA438W and EJA438N diaphragm sealed gauge pressure transmitter measures the pressure of liquids, gases, and steam. This section describes the operation procedure for the EJA438W as shown in Figure 6.1.1 when measuring pressure in a tank. (a) Confirm that there is no leak in the connecting part of each diaphragm seal mounting flange. (b) Turn ON power and connect the BT200.
6. OPERATION 6.2 Zero Point Adjustment Adjust the zero point after operating preparation is completed. IMPORTANT Do not turn off the power to the transmitter immediately after a zero adjustment. Powering off within 30 seconds after a zero adjustment will return the adjustment back to the previous settings. The zero point adjustment can be made in either way: using the zero-adjustment screw of the transmitter or the BT200 operation.
6. OPERATION 6.2.2 When you cannot obtain Low Range Value from actual measured value of 0%; Convert the actual measured value obtained by a digital manometer or a glass gauge into %. [Example] The measuring range of 50 to 250 kPa; the actual measured value of 130 kPa. Actual measured value= 130–50 3100=40.0% 250–50 j Using the Transmitter Zero-Adjustment Screw Turn the screw to match the output signal to the actual measured value in %. 6.
6. OPERATION 6.5 Setting the Range Using the Range-setting Switch IMPORTANT • Do not turn off the power to the transmitter immediately after completion of the change in the LRV and/or HRV setting(s). Note that powering off within thirty seconds after setting will cause a return to the previous settings. • Changing LRV automatically changes HRV to the following value.
7. BRAIN TERMINAL BT200 OPERATION 7. BRAIN TERMINAL BT200 OPERATION The DPharp is equipped with BRAIN communications capabilities, so that range changes, Tag No. setup, monitoring of self-diagnostic results, and zero point adjustment can be handled by remote control via BT200 BRAIN TERMINAL or CENTUM CS console. This section describes procedures for setting parameters using the BT200. For details concerning the BT200, see IM 1C0A10-E, “BT200 User’s Manual.” 7.2 BT200 Operating Procedures 7.2.
7. BRAIN TERMINAL BT200 OPERATION 7.2.2 Operating Key Functions (1) Alphanumeric Keys and Shift Keys You can use the alphanumeric keys in conjunction with the shift keys to enter symbols, as well as alphanumeric keys. Use the function key [F1] CODE to enter symbols. The following symbols will appear in sequence, one at a time, at the cursor each time you press [F1] CODE: / . – , + * ) ( ’ & % $ # ” ! To enter characters next to these symbols, press [ > ] to move the cursor.
7. BRAIN TERMINAL BT200 OPERATION 7.2.3 Calling Up Menu Addresses Using the Operating Keys ––WELCOME–– BRAIN TERMINAL ID: BT200 STARTUP SCREEN check connection push ENTER key UTIL The utility screen contains the following items. 1. BT200 ID settings 2. Security code settings 3. Switching language of messages (Japanese or English) 4. LCD contrast setting 5. Adjusting printout tone (BT200-P00 only) UTILITY 1.ID 2.SECURITY CODE 3.LANGUAGE SELECT 4.LCD CONTRAST 5.
7. BRAIN TERMINAL BT200 OPERATION 7.3 Setting Parameters Using the BT200 7.3.1 Parameter Summary Instruments to which applicable: F: Differential pressure transmitters P: Pressure transmitters L: Liquid level transmitters No. Item 01 MODEL 02 TAG NO. EJA110, EJA120, EJA118W, EJA118N, EJA118Y, and EJA115 EJA310, EJA430, EJA438W, and EJA438N EJA210 and EJA220 Description Model+capsule type Tag number 03 SELF CHECK Self-diagnostic result A DISPLAY A10 OUTPUT (%) A11 ENGR.
7. BRAIN TERMINAL BT200 OPERATION No. D Item AUX SET 1 Description Auxiliary setting data 1 Rewritability — D21 DISP UNIT D22 D23 D30 D31 Engineering unit for display DISP LRV Engineering range, lower range value DISP HRV Engineering range, higher range value TEMP UNIT Temperature setting units STAT. P.
7. BRAIN TERMINAL BT200 OPERATION 7.3.2 Parameter Usage and Selection IMPORTANT Before describing the procedure for setting parameters, we present the following table showing how the parameters are used and in what case. If the transmitter is turned off within 30 seconds after parameters have been set, the set data will not be stored and the terminal returns to previous settings. Table 7.3.1 Parameter Usage and Selection Setup Item Tag No. setup c P.7-7 Calibration range setup c P.
7. BRAIN TERMINAL BT200 OPERATION 7.3.3 Setting Parameters Set or change the parameters as necessary. After completing these, do not fail to use the “DIAG” key to confirm that “GOOD” is displayed for the selfdiagnostic result at _60: SELF CHECK. SET C10:TAG NO. YOKOGAWA FIC-1a This is the panel for confirming set data. The set data items flash. PRINTER OFF F2:PRINTER ON FEED POFF NO When all items have been confirmed, press the again. (To go back to the setting panel, press the (1) Tag No.
7. BRAIN TERMINAL BT200 OPERATION b. Setting Calibration Range Lower Range Value and Higher Range Value (C21: LOW RANGE, C22: HIGH RANGE) These range values are set as specified in the order before the instrument is shipped. Follow the procedure below to change the range. • Example 2: With present settings of 0 to 30 kPa, set the Higher range value to10 kPa. DEL FEED DEL CLR FEED NO SET C20:PRESS UNIT kPa C21:LOW RANGE 0.5 kPa C22:HIGH RANGE 30.
7. BRAIN TERMINAL BT200 OPERATION (4) Output Signal Low Cut Mode Setup (D10: LOW CUT, D11: LOW CUT MODE) Low cut mode can be used to stabilize the output signal near the zero point. The low cut point can be set in a range from 0 to 20% of output. (Hysteresis of cut point: ±1%) (5) Integral Indicator Scale Setup The following 5 displays are available for integral indicators. D20: DISP SELECT and Display NORMAL % Select “ZERO” as the low cut mode.
7. BRAIN TERMINAL BT200 OPERATION % indication and input pressure indication User-set engineering unit display D20: DISP SELECT NORMAL % INP PRES PRES & % D20: DISP SELECT USER SET USER & % b. Setting User-set Engineering Unit (D21: DISP UNIT) This parameter allows entry of the engineering units to be displayed on the BT200. When the instrument is shipped, this is set as specified in the order. Follow the procedure below to change this setting.
7. BRAIN TERMINAL BT200 OPERATION (6) Unit Setup for Displayed Temperature (D30: TEMP UNIT) When the instrument is shipped, the temperature units are set to degC. Follow the procedure below to change this setting. Note that changing the unit here changes the unit for A20: AMP TEMP (amplifier temperature) and A21: CAPSULE TEMP (capsule temperature). (8) Output Status Display/Setup when a CPU Failure (D52: BURN OUT) This parameter displays the status of 4 to 20 mA DC output if a CPU failure occurs.
7. BRAIN TERMINAL BT200 OPERATION (10) Range Change while Applying Actual Inputs (H10: AUTO LRV, H11: AUTO HRV) This feature allows the lower and higher range values to be set up automatically with the actual input applied. If the lower and higher range values are set, C21: LOW RANGE and C22: HIGH RANGE are changed at this same time. Note that changing the higher range value does not cause the lower range value to change but does change the span.
7. BRAIN TERMINAL BT200 OPERATION (b)-2 Follow the procedure below to use J11: ZERO DEV. (a) Follow the procedure below when setting the present output to 0% (4 mA). Output is 0.5%. A10:OUTPUT (%) 0.5 % SET J10:ZERO ADJ 0.0 % + 000.0 Press the Present output is 41.0%. A10:OUTPUT (%) 41.0 % Output error = 40.0 – 41.0 = –1.0%. Since “J11: ZERO DEV.” contains SET J11:ZERO DEV. 2.50 % 0 key twice. the previous correction, obtain the correction value by adding –1.0% to CLR ESC SET J10:ZERO ADJ 0.
7. BRAIN TERMINAL BT200 OPERATION 7.4 Displaying Data Using the BT200 (12) Test Output Setup (K10: OUTPUT X%) This feature can be used to output a fixed current from 3.2 mA (–5%) to 21.6 mA (110%) for loop checks. 7.4.1 Displaying Measured Data The BT200 can be used to display measured data. • Example: Output 12 mA (50%) fixed current. SET K10:OUTPUT X % 0.0 % + 050.0 The measured data is updated automatically every 7 seconds.
7. BRAIN TERMINAL BT200 OPERATION 7.5 Self-Diagnostics • Example 3: Checking the history of the errors 7.5.1 Checking for Problems Connect the BT200 to the MENU J:ADJUST K:TEST M:MEMO P:RECORD (1) Identifying Problems with BT200 The following four areas can be checked. (a) Whether connections are good. (b) Whether BT200 was properly operated. (c) Whether settings were properly entered. (d) History of the errors. See examples below. HOME SET transmitter, and call item “P.
7. BRAIN TERMINAL BT200 OPERATION (2) Checking with Integral Indicator NOTE If an error is detected in the self-diagnostic, an error number is displayed on the integral indicator. If there is more than one error, the error number changes at two-second intervals. See Table 7.5.1 regarding the error numbers. F0738.EPS Figure 7.5.
7. BRAIN TERMINAL BT200 OPERATION 7.5.2 Errors and Countermeasures The table below shows a summary of error messages. Table 7.5.1 Error Message Summary Integral Indicator Display BT200 Display Output Operation during Error Cause Countermeasure None GOOD ---- ERROR Er. 01 CAP MODULE FAULT Capsule problem. Outputs the signal (Hold, High, or Low) set with parameter D53. Replace capsule. Er. 02 AMP MODULE FAULT Amplifier problem. Outputs the signal (Hold, High, or Low) set with parameter D53.
8. MAINTENANCE 8. MAINTENANCE 8.1 Overview WARNING Since the accumulated process fluid may be toxic or otherwise harmful, take appropriate care to avoid contact with the body, or inhalation of vapors during draining condensate or venting gas in transmitter pressure-detector section even after dismounting the instrument from process line for maintenance. Maintenance of the transmitter is easy due to its modular construction.
8. MAINTENANCE Table 8.2.1 Tools for Disassembly and Reassembly Name Power supply Load resistor Voltmeter Yokogawa-recommended Instrument 4 to 20 mA DC signal Model SDBT or SDBS distributor Model 2792 standard resistor [250 Ω ±0.005%, 3 W] Load adjustment resistor [100 Ω ±1%, 1 W] Model 2501 A digital multimeter Accuracy (10V DC range): ±(0.002% of rdg + 1 dgt) Model MT110, MT120 precision digital manometer 1) For 10 kPa class Accuracy: ±(0.015% of rdg + 0.015% of F.S.) . . . . . ±(0.2% of rdg + 0.
8. MAINTENANCE 8.4 Disassembly and Reassembly This section describes procedures for disassembly and reassembly for maintenance and component replacement. 8.4.1 Replacing the Integral Indicator This subsection describes the procedure for replacing an integral indicator. (See Figure 8.4.2) CAUTION Always turn OFF power and shut off and release pressures before disassembly. Use proper tools for all operations. Table 8.4.1 shows the tools required.
8. MAINTENANCE 8.4.2 Replacing the CPU Assembly NOTE This subsection describes the procedure for replacing the CPU assembly. (See Figure 8.4.2) j Removing the CPU Assembly 1) Remove the cover. If an integral indicator is mounted, refer to Subsection 8.4.1 and remove the indicator. 2) Turn the zero-adjustment screw to the position (where the screw head slot is horizontal) shown in Figure 8.4.2. 3) Disconnect the output terminal cable (cable with brown connector at the end).
8. MAINTENANCE 8.5 Troubleshooting 8.5.2 Troubleshooting Flow Charts If any abnormality appears in the measured values, use the troubleshooting flow chart below to isolate and remedy the problem. Since some problems have complex causes, these flow charts may not identify all. If you have difficulty isolating or correcting a problem, contact Yokogawa service personnel. The following sorts of symptoms indicate that transmitter may not be operating properly. Example : • There is no output signal.
8. MAINTENANCE Output travels beyond 0% or 100%. Large output error. Connect BRAIN TERMINAL and check self-diagnostics. Connect BRAIN TERMINAL and check self-diagnostics. Does the selfdiagnostic indicate problem location? NO Refer to error message summary in Subsection 7.5.2 to take actions. Is the diaphragm seal correctly connected to the process? YES Does the selfdiagnostic indicate the problem location? YES NO Refer to error message summary in Subsection 7.5.2 to take actions.
9. GENERAL SPECIFICATIONS 9. GENERAL SPECIFICATIONS 9.1 Standard Specifications Ambient Temperature Limits: * Safety approval codes may affect limits. –40 to 60°C (–40 to 140°F), –30 to 60°C (–22 to 140°F) with LCD Display Refer to GS 1C22T2-E for Fieldbus communication type marked with “e”. d Performance Specifications Note:The ambient temperature limits must be within the fill fluid operating temperature range, see Table 1. See General Specifications sheet, GS 1C22J3-E.
9. GENERAL SPECIFICATIONS d Physical Specifications Process temperature Process temperature Process temperature for fill fluid code B for fill fluid code A Wetted Parts Materials: for fill fluid code C Diaphragm and other wetted parts; Transmitter ambient temperature range See ‘Model and Suffix Codes’ (For fill fluid code A,B) Non-wetted Parts Materials: Flange max. working Capillary tube; pressure SUS316 Protection tube; SUS304, PVC-sheathed [Max.
9. GENERAL SPECIFICATIONS 9.2 Model and Suffix Codes d Model EJA438W Model [Style: S2] Suffix Codes Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm sealed differential pressure transmitter EJA438W (Flush diaphragm type) Output Signal -D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 20 mA DC with digital communication (BRAIN protocol) -E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. GENERAL SPECIFICATIONS d Model EJA438N [Style: S2] Model Suffix Codes Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm sealed differential pressure transmitter EJA438N (Extended diaphragm type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 20 mA DC with digital communication (BRAIN protocol) -D Output Signal -E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. GENERAL SPECIFICATIONS 9.3 Optional Specifications Item Factory Mutual (FM) Description FM Explosionproof Approval Explosionproof for Class I, Division 1, Groups B, C and D Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G Hazardous (classified) locations, indoors and outdoors ( NEMA 4X ) Temperature class: T6 Amb. Temp.
9. GENERAL SPECIFICATIONS Item Description Code Color change Amplifier cover only Ph Coating change Epoxy resin-baked coating X1 Lightning protector Transmitter power supply voltage: 10.5 to 32 V DC (9 to 32 V DC for Fieldbus communication type) Allowable current: Max.
9. GENERAL SPECIFICATIONS 9.4 Dimensions d Model EJA438W [Style: S2] Unit: mm(approx. inch) 25 (0.98) t ød*1 34 (1.34) øD øC øg f n-øh 140(5.51) Conduit connection 12 (0.47) Terminal side 197(7.76) ø78 (3.07) Internal indicator (Optional) Ground terminal Open to atmosphere (ø5mm) Zero adjustment 124 (4.88) 92 (3.62) 47 (1.85) 333(13.11) Wetted parts material code U (Titanium) 110 (4.33) 94(3.70) 146(5.
9. GENERAL SPECIFICATIONS d Model EJA438N [Style: S2] Unit : mm (approx. inch) øD øC 94(3.70) 110 (4.33) Conduit connection 12 (0.47) 197(7.76) Ground terminal Open to atmosphere (ø5mm) Zero adjustment 92 (3.62) 47 (1.85) 124 (4.88) Terminal side ø78 (3.07) Internal indicator (Optional) 333(13.11) n-øh 146(5.75) External indicator conduit connection (Optional) ø30 (1.18) 120 (4.72) 140(5.51) t X2 14 (0.55) øA f øg Clamps (Only for JIS Flameproof type) 2-inch pipe (O.D. 60.
Customer Maintenance Parts List DPharp EJA Series Transmitter Section 2 5 4 11 A 10 3 12 13 1 2 2 1 14 A 6 7-1 Item Part No.
2 Blank Page Subject to change without notice. Printed in Japan.
Customer Maintenance Parts List Models EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitter (Pressure-detector Section) 1 2 3 4 F9300AJ — — Below Y9625YU EJA438N Model Item Part No.
2 Table 1. Flange and Bolt Parts Number Flange Material (Item 2) Flange Rating 50 mm JIS 10K 50 mm JIS 20K 50 mm JIS 40K 50 mm JIS 63K 2 inch ANSI Class 150 2 inch ANSI Class 300 2 inch ANSI Class 600 2 inch JPI Class 150 2 inch JPI Class 300 2 inch JPI Class 600 80 mm JIS 10K 80 mm JIS 20K 80 mm JIS 40K 80 mm JIS 63K 3 inch ANSI Class 150 3 inch ANSI Class 300 3 inch ANSI Class 600 3 inch JPI Class 150 3 inch JPI Class 300 3 inch JPI Class 600 Oct. 1999 Subject to change without notice. Printed in Japan.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT Apparatus Certified Under Technical Criteria (IEC-compatible Standards) and from “RECOMMENDED PRACTICES for Explosion-Protected Electrical Installations in General Industries,” published in 1979 1.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT (2) For pressure transmitters, pH transmitters, temperature detectors and the like, safety barriers that can be combined are already specified. Other safety barriers cannot be used. — when up to two countable faults are applied and, in addition, — when non-countable faults produce an onerous condition.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT intrinsically safe apparatus may be used at an ambient temperature up to 60°C. So, specifications should be checked before installing intrinsically safe apparatus. Installations for Explosive Gas Atmospheres in General Industry” issued in 1994 by the Japanese Ministry of Labour, the Research Institute of Industrial Safety.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT Apparatus Certified Under Technical Criteria (IEC-compatible Standards) 1. General construction is of completely enclosed type and its enclosure shall endure explosive pressures in cases where explosive gases or vapours entering the enclosure cause explosion.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT 4. Installation of Flameproof Apparatus • Specific cables shall be used as recommended by the “USER’S GUIDELINES for Electrical Installations for Explosive Gas Atmospheres in General Industry,” published in 1994. • In necessary, appropriate protective pipes (conduit or flexible pipes), ducts or trays shall be used for preventing the cable run (outside the cable glands) from damage.
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT 6. Maintenance of Flameproof Apparatus requirements for flameproof apparatus (however, bear in mind that the apparatus must always be restored to its original condition). If you attempt to repair the flameproof apparatus, company-specified components shall be used. (d) Before starting to service the apparatus, be sure to check all parts necessary for retaining the requirements for flameproof apparatus.
REVISION RECORD Title: Model EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitter Manual No.: IM 1C22J1-01E Edition Date Page 8th Mar. 1998 1-1 5-1 10-1 10-3 10-6 2-9+ CMPL 9th Sep. 1998 2-14 2-15 7-19 10-3 10-4 CMPL 10th Feb. 2000 2 2-8 2-9 5-1 5-3 7-4 – 9-6 CMPL Revised Item 1 5.1 10.1.1 10.1.2 10.1.3 • Add FOUNDATION Fieldbus protcol version to ‘NOTE’ notice. • Add Item 6 to the Wiring Precautions. • Add FOUNDATION Fieldbus protocol. • Add Output signal code F .
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