YOKOGAWA Dpharp EJA438N User Manual
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YOKOGAWA Dpharp EJA438N User Manual

Diaphragm sealed gauge pressure transmitters (style: s2)
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Manual
Y okogawa Electric Corporation
Model EJA438W and EJA438N
Diaphragm Sealed Gauge
Pressure Transmitters
[Style: S2]
IM 1C22J1-01E
IM 1C22J1-01E
10th Edition

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Summary of Contents for YOKOGAWA Dpharp EJA438N

  • Page 1 Instruction Manual Model EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters [Style: S2] IM 1C22J1-01E IM 1C22J1-01E 10th Edition Y okogawa Electric Corporation...
  • Page 2 Blank Page...

  • Page 3: Table Of Contents

    (1) General-use Type and Intrinsically Safe Type ......5-3 (2) Flameproof Type (JIS) ..............5-3 Grounding .................... 5-4 Power Supply Voltage and Load Resistance ........5-4 FD No. IM 1C22J1-01E IM 1C22J1-01E 10th Edition: Feb. 2000(YK) All Rights Reserved, Copyright © 1995, Yokogawa Electric Corporation...
  • Page 4 CONTENTS OPERATION ....................6-1 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 6.2.2 When you cannot obtain Low Range Value from actual measured value of 0%;...
  • Page 5 CONTENTS Disassembly and Reassembly ............8-3 8.4.1 Replacing the Integral Indicator ........... 8-3 8.4.2 Replacing the CPU Assembly ............8-4 Troubleshooting ................... 8-5 8.5.1 Basic Troubleshooting ..............8-5 8.5.2 Troubleshooting Flow Charts ............8-5 GENERAL SPECIFICATIONS ..............9-1 Standard Specifications ..............9-1 Model and Suffix Codes ..............
  • Page 6 Blank Page...

  • Page 7: Introduction

    Please contact Yokogawa for any repair permission. or modification required to the instrument. • Yokogawa makes no warranty of any kind with • The following safety symbol marks are used in this regard to this manual, including, but not limited to,...

  • Page 8: Warranty

    CAUTION • Responsible party for repair cost for the problems This instrument is tested and certified as intrinsi- shall be determined by Yokogawa based on our cally safe type or explosionproof type. Please investigation. note that the construction of the instrument, •...

  • Page 9: Handling Cautions

    2. HANDLING CAUTIONS HANDLING CAUTIONS This chapter describes important cautions regarding 2.2 Unpacking how to handle the transmitter. Read carefully before using the transmitter. When moving the transmitter to the installation site, keep it in its original packaging. Then, unpack the The EJA Series pressure transmitters are thoroughly transmitter there to avoid damage on the way.

  • Page 10: Pressure Connection

    2. HANDLING CAUTIONS (b) Ambient Atmosphere 2.7 Restrictions on Use of Radio Avoid installing the transmitter in a corrosive Transceiver 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.

  • Page 11: Installation Of Explosion Protected Type

    2. HANDLING CAUTIONS 2.9.1 FM Approval 4) After completing the test and being very careful not to touch exposed conductors disconnect the a. FM Intrinsically Safe Type insulation tester and connect a 100 k resistor Caution for FM intrinsically safe type. (Following between the grounding terminal and the short- contents refer “DOC.

  • Page 12: Csa Certification

    “FACTORY SEALED, CONDUIT SEAL NOT • The instrument modification or parts replacement by REQUIRED.” INSTALL IN ACCORDANCE other than authorized representative of Yokogawa WITH THE INSTRUCTION MANUAL IM 1C22. Electric Corporation is prohibited and will void • Take care not to generate mechanical sparking...
  • Page 13 • The instrument modification or parts replacement INSTALLÉ À MOINS DE 50 cm DU by other than authorized representative of BÎTIER. Yokogawa Electric Corporation and Yokogawa • When installed in Division 2, “SEALS NOT Corporation of America is prohibited and will void REQUIRED.”...

  • Page 14: Saa Certification

    Location • The instrument modification or parts replacement Equipment by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void Standards Association of Australia 42 V DC Max. Intrinsically safe and Type n Certification. 4 to 20 mA DC...

  • Page 15: Cenelec (Kema)/Iec (Kema) Certification

    • Output Signal: 4 to 20 mA • Ambient Temperature: –40 to 80 C by other than authorized representative of Note 2. Wiring Yokogawa Electric Corporation is prohibited and • All wiring shall comply with the Australian will void KEMA Intrinsically safe Certification. Standard.

  • Page 16: Jis Certification

    Intrinsically Safe Type(optional code /JS1) allows by other than authorized representative of installation in Division 0, 1, and 2 areas.] Yokogawa Electric Corporation is prohibited and will void KEMA Type of Protection “n” Certifica- To observe the safety of flameproof equipment requires tion.

  • Page 17: 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.

  • Page 18: Component Names

    3. COMPONENT NAMES COMPONENT NAMES Transmitter section* *See below for details. Capillary tube Cover flange Diaphragm seal Diaphragm Flange Pressure-detector section F0301.EPS Figure 3.1.1 Component Names (Model EJA438W External View) Terminal box cover Transmitter section External indicator Conduit connection (Note 1) conduit connection CPU assembly Zero-adjustment screw...

  • Page 19: Installation

    4. INSTALLATION INSTALLATION 4.1 Precautions IMPORTANT Before installing the transmitter, read the cautionary • During the diaphragm seal installation, ensure notes in Section 2.4, “Selecting the Installation as far as possible that no seal liquid head is Location.” For additional information on the applied to the diaphragm seal.
  • Page 20 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.

  • Page 21: Affixing The Teflon Film

    4. INSTALLATION 4.4 Affixing the Teflon Film 4.5 Rotating Transmitter Section The FEP Teflon option includes a teflon film and The DPharp transmitter section can be rotated in 90 fluorinated oil. segments. Before mounting the diaphragm seal to the process (1) Remove the two Allen screws that fasten the flange, affix the teflon film as follows : transmitter section and pressure-detector section,...

  • Page 22: Wiring

    5. WIRING WIRING 5.1 Wiring Precautions CAUTION If the transmitter is flameproof and the ambient IMPORTANT temperature is 50 C or more, use cables having a maximum allowable heat resistance of at least • Lay wiring as far as possible from electrical 75 C in consideration of the instrument's genera- noise sources such as large capacity transform- tion of heat or the cables' self-heating.

  • Page 23: Brain Terminal Bt200 Connection

    5. WIRING 5.3.3 BRAIN TERMINAL BT200 Connec- 5.4.1 Loop Configuration tion Since the DPharp uses a two-wire transmission system, Connect the BT200 to the SUPPLY + and – terminals signal wiring is also used as power wiring. (Use hooks). DC power is required for the transmitter loop. The transmitter and distributor are connected as shown Transmitter terminal box below.

  • Page 24: Wiring Installation

    Proper tightening is important. If it is too tight, a • Use only flameproof packing adapters approved by circuit break in the cable may occur; if not tight Yokogawa. enough, the flameproof effectiveness will be • Apply a nonhardening sealant to the terminal box compromised.

  • Page 25: Grounding

         5. WIRING 5.6 Power Supply Voltage and Flameproof metal conduit wiring • A seal fitting must be installed near the terminal box Load Resistance connection port for a sealed construction. When configuring the loop, make sure that the external •...

  • Page 26: Operation

    6. OPERATION OPERATION 6.1 Preparation for Starting Op- Confirming that Transmitter is Operating Properly eration Confirmation using the BT200 The Model EJA438W and EJA438N diaphragm sealed • If the wiring system is faulty, ‘communication error’ gauge pressure transmitter measures the pressure of appears on the display.

  • Page 27: Zero Point Adjustment

    6. OPERATION 6.2 Zero Point Adjustment 6.2.1 When you can obtain Low Range Value from actual measured value Adjust the zero point after operating preparation is of 0% (0 kPa, atmospheric pres- completed. sure); For pressure measurement using gauge pressure transmitters, follow the step below before zero point IMPORTANT adjustment.

  • Page 28: When You Cannot Obtain Low Range Value From Actual Measured Value Of 0

    6. OPERATION 6.3 Starting Operation 6.2.2 When you cannot obtain Low Range Value from actual measured value After completing the zero point adjustment, use the of 0%; procedure below to start operation. Convert the actual measured value obtained by a digital 1) Confirm the operating status.

  • Page 29: Setting The Range Using The Range-Setting Switch

    6. OPERATION 6.5 Setting the Range Using the IMPORTANT Range-setting Switch • Do not turn off the power to the transmitter With actual pressure being applied to the transmitter, immediately after completion of the change in the range-setting switch (push-button) located on the the LRV and/or HRV setting(s).

  • Page 30: Brain Terminal Bt200 Operation

    7. BRAIN TERMINAL BT200 OPERATION BRAIN TERMINAL BT200 OPERATION The DPharp is equipped with BRAIN communica- 7.2 BT200 Operating Procedures tions capabilities, so that range changes, Tag No. setup, monitoring of self-diagnostic results, and zero 7.2.1 Key Layout and Screen Display point adjustment can be handled by remote control Figure 7.2.1a shows the arrangement of the operating via BT200 BRAIN TERMINAL or CENTUM CS...

  • Page 31: Operating Key Functions

    7. BRAIN TERMINAL BT200 OPERATION 7.2.2 Operating Key Functions Use the function key [F1] to enter symbols. CODE The following symbols will appear in sequence, one (1) Alphanumeric Keys and Shift Keys at a time, at the cursor each time you press [F1] You can use the alphanumeric keys in conjunction CODE: with the shift keys to enter symbols, as well as...

  • Page 32: Calling Up Menu Addresses Using The Operating Keys

    FEED 4. LCD contrast setting 5. Adjusting printout tone (UTIL) (BT200-P00 only) PARAM 01:MODEL EJA438W-DA INITIAL 02:TAG NO. FUNC DATA YOKOGAWA 1.MENU (ESC) SCREEN 03:SELF CHECK 2.UPLOAD TO BT200 GOOD 3.DOWNLOAD TO INST 4.PRINT ALL DATA HOME (SET) (ADJ) (HOME MENU SCREEN)

  • Page 33: Setting Parameters Using The Bt200

    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 EJA110, EJA120, EJA118W, EJA118N, EJA118Y, and EJA115 P: Pressure transmitters EJA310, EJA430, EJA438W, and EJA438N L: Liquid level transmitters EJA210 and EJA220 Applica- Rewrita-...
  • Page 34 7. BRAIN TERMINAL BT200 OPERATION Applica- Rewrita- bility Item Description Remarks Default Value bility AUX SET 1 Auxiliary setting data 1 Menu name — D21 DISP UNIT Engineering unit for 8 uppercase display alphanumerics D22 DISP LRV Engineering range, –19999 to 19999 As specified when ordered.

  • Page 35: Parameter Usage And Selection

    7. BRAIN TERMINAL BT200 OPERATION 7.3.2 Parameter Usage and Selection IMPORTANT Before describing the procedure for setting param- If the transmitter is turned off within 30 seconds eters, we present the following table showing how after parameters have been set, the set data the parameters are used and in what case.

  • Page 36: Setting Parameters

    This is the panel for confirming C10:TAG NO. Set or change the parameters as necessary. After set data. The set data items flash. YOKOGAWA FIC-1a completing these, do not fail to use the “DIAG” key When all items have been confir-...

  • Page 37: Damping Time Constant Setup

    7. BRAIN TERMINAL BT200 OPERATION b. Setting Calibration Range Lower • Example 2: With present settings of 0 to 30 kPa, Range Value and Higher Range Value set the Higher range value to10 kPa. (C21: LOW RANGE, C22: HIGH RANGE) Set 10.

  • Page 38: Output Signal Low Cut Mode Setup

    7. BRAIN TERMINAL BT200 OPERATION (4) Output Signal Low Cut Mode Setup (5) Integral Indicator Scale Setup (D10: LOW CUT, D11: LOW CUT MODE) The following 5 displays are available for integral Low cut mode can be used to stabilize the output indicators.
  • Page 39 7. BRAIN TERMINAL BT200 OPERATION b. Setting User-set Engineering Unit % indication and User-set engineering (D21: DISP UNIT) input pressure unit display This parameter allows entry of the engineering units indication to be displayed on the BT200. When the instrument is shipped, this is set as specified in the order.

  • Page 40: Unit Setup For Displayed Temperature

    7. BRAIN TERMINAL BT200 OPERATION (6) Unit Setup for Displayed Temperature (8) Output Status Display/Setup when a CPU (D30: TEMP UNIT) Failure (D52: BURN OUT) When the instrument is shipped, the temperature units This parameter displays the status of 4 to 20 mA DC are set to degC.

  • Page 41: Range Change While Applying Actual Inputs

    7. BRAIN TERMINAL BT200 OPERATION (10) Range Change while Applying Actual Note that changing the higher range value does not Inputs (H10: AUTO LRV, H11: AUTO cause the lower range value to change but does HRV) change the span. This feature allows the lower and higher range values to be set up automatically with the actual input •...
  • Page 42 7. BRAIN TERMINAL BT200 OPERATION (b)-2 Follow the procedure below to use J11: ZERO (a) Follow the procedure below when setting the present output to 0% (4 mA). DEV. Present output is 41.0%. Output is 0.5%. A10:OUTPUT (%) A10:OUTPUT (%) 41.0 % Output error = 40.0 –...

  • Page 43: Test Output Setup

    7. BRAIN TERMINAL BT200 OPERATION 7.4 Displaying Data Using the (12) Test Output Setup (K10: OUTPUT X%) This feature can be used to output a fixed current BT200 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.

  • Page 44: Self-Diagnostics

    The initial data panel shows the PARAM 01:MODEL <(a) SETUP PANEL> EJA438W-DA result of current transmitter 02:DAG NO. YOKOGAWA For the details of the messages listed below, see Table diagnostics. 03:SELF CHECK ERROR 8.5.1 Error Message Summary. PARAM Press the...

  • Page 45: Checking With Integral Indicator

    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.

  • Page 46: Errors And Countermeasures

    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 Output Operation Indicator BT200 Display Cause Countermeasure during Error Display None GOOD ERROR ---- Capsule problem. Outputs the signal Replace capsule.

  • Page 47: Maintenance

    8. MAINTENANCE MAINTENANCE 8.1 Overview 8.2 Calibration Instruments Se- lection Table 8.2.1 shows the instruments required for calibra- WARNING tion. Select instruments that will enable the transmitter to be calibrated or adjusted to the required accuracy. Since the accumulated process fluid may be toxic or otherwise harmful, take appropriate care The calibration instruments should be handled carefully to avoid contact with the body, or inhalation of...
  • Page 48 0.1% level, there are difficulties in calibration to this level in the field. For calibration to the 0.1% level, contact Yokogawa representatives from which the instrument was purchased or the nearest Yokogawa office.

  • Page 49: Disassembly And Reassembly

    Allen wrenches JIS B4648 a transmitter. If such modification is absolutely One each, nominal 3 and required, contact Yokogawa. 5 mm Allen wrenches Wrench Width across flats, 17 mm Torque wrench Adjustable wrench...

  • Page 50: Replacing The Cpu Assembly

    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) Confirm that the zero-adjustment screw pin is placed properly in the groove on the bracket Removing the CPU Assembly prior to tightening the two bosses.

  • Page 51: Troubleshooting

    If you have difficulty isolating or correcting a problem, • Output value is inconsistent with value inferred for process variable. contact Yokogawa service personnel. 8.5.1 Basic Troubleshooting Connect BRAIN TERMINAL and check self-diagnostics. First determine whether the process variable is actually abnormal or a problem exists in the measurement system.
  • Page 52 Were appropriate instruments used for calibration? Adjust the zero point. Refer to Section 8.2 when selecting instruments for calibration. Contact Yokogawa service personnel. F0806.EPS Is output adjusted correctly? Adjust the output. Contact Yokogawa service personnel. F0807.EPS IM 1C22J1-01E...

  • Page 53: General Specifications

    9. GENERAL SPECIFICATIONS GENERAL SPECIFICATIONS Standard Specifications Ambient Temperature Limits: Refer to GS 1C22T2-E for Fieldbus communica- * Safety approval codes may affect limits. tion type marked with “ ”. –40 to 60 C (–40 to 140 F), –30 to 60 C (–22 to 140 F) with LCD Display Performance Specifications Note:The ambient temperature limits must be within the See General Specifications sheet, GS 1C22J3-E.
  • Page 54 Note 4: The pressure transmitter should be installed at least 600 mm below the process connection. However, this value(600 mm) may be affected by ambient temperature, operating pressure, fill fluid or material of the wetted diaphragm. Contact YOKOGAWA when the transmitter can not be installed at least 600 mm below the process connection.

  • Page 55: Model And Suffix Codes

    9. GENERAL SPECIFICATIONS Model and Suffix Codes Model EJA438W [Style: S2] Model Suffix Codes Description Diaphragm sealed differential pressure transmitter ........EJA438W (Flush diaphragm type) -D .
  • Page 56 9. GENERAL SPECIFICATIONS Model EJA438N [Style: S2] Model Suffix Codes Description Diaphragm sealed differential pressure transmitter ........EJA438N (Extended diaphragm type) -D .

  • Page 57: Optional Specifications

    9. GENERAL SPECIFICATIONS Optional Specifications Item Description Code 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.
  • Page 58 9. GENERAL SPECIFICATIONS Item Description Code Color change Amplifier cover only Painting Coating change Epoxy resin-baked coating Transmitter power supply voltage: 10.5 to 32 V DC (9 to 32 V DC for Fieldbus Lightning protector communication type) Allowable current: Max. 6000 A (1x40 s), Repeating 1000 A (1x40 s) 100 times Oil-prohibited use Degrease cleansing treatment...

  • Page 59: Dimensions

    9. GENERAL SPECIFICATIONS Dimensions Model EJA438W [Style: S2] 25 (0.98) Unit: mm(approx. inch) ød* (1.34) n-øh 140(5.51) Wetted parts material 110 (4.33) code U (Titanium) 94(3.70) External indicator Conduit conduit connection connection (0.47) (Optional) Terminal side Internal indicator (Optional) Ground terminal Open to atmosphere...
  • Page 60 9. GENERAL SPECIFICATIONS Model EJA438N [Style: S2] Unit : mm (approx. inch) øD øC øg øA ø30 140(5.51) (4.72) n-øh (1.18) 94(3.70) 110 (4.33) External indicator Conduit conduit connection connection (Optional) (0.47) Terminal side Internal indicator (Optional) Ground terminal Open to atmosphere Zero adjustment...

  • Page 61: Parts List

    SCS14A stainless steel Below LCD Board Assembly For integral indicator F9342BL Without range-setting switch F9342BM With range-setting switch F9342MK Mounting Screw F9300PB Label CMPL 1C22A1-02E All Rights Reserved, Copyright © 1995, Yokogawa Electric Corporation. 6th Edition: Feb. 2000(YK) Yokogawa Electric Corporation...
  • Page 62 Blank Page CMPL 1C22A1-01E Subject to change without notice. Printed in Japan.
  • Page 63 D0117XL-A Bracket Below SECC Carbon Steel F9270AX SUS304 Stainless Steel F9300TE Bolt Below S15C Carbon Steel F9270AY SUS XM7 Stainless Steel F9273CZ CMPL 1C22J3-01E All Rights Reserved, Copyright © 1995, Yokogawa Electric Corporation. 3rd Edition: Oct. 1999(YK) Yokogawa Electric Corporation...
  • Page 64 Table 1. Flange and Bolt Parts Number Flange Material (Item 2) Flange Rating SUS304 SUS316 S25C Bolt (Item 3) Carbon Steel Stainless Steel Stainless Steel 50 mm JIS 10K F9351KP F9351GP F9351WA Y9520ZU 50 mm JIS 20K F9351KQ F9351GQ F9351WB Y9525ZU 50 mm JIS 40K F9351KR...

  • Page 65: Installation And Operating Precautions For Jis Intrinsically Safe Equipment

    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 Electri- cal Installations in General Industries,” published in 1979 1.
  • Page 66 INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT (2) For pressure transmitters, pH transmitters, temperature — when up to two countable faults are applied and, in detectors and the like, safety barriers that can be addition, combined are already specified. Other safety barriers —...
  • Page 67 INSTALLATION AND OPERATING PRECAUTIONS FOR JIS INTRINSICALLY SAFE EQUIPMENT intrinsically safe apparatus may be used at an ambient Installations for Explosive Gas Atmospheres in General temperature up to 60 C. So, specifications should be checked Industry” issued in 1994 by the Japanese Ministry of Labour, before installing intrinsically safe apparatus.

  • Page 68: Installation And Operating Precautions For Jis Flameproof Equipment

    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 The following describes precautions on electrical apparatus gases or vapours entering the enclosure cause explosion.
  • Page 69 INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF EQUIPMENT 4. Installation of Flameproof • Specific cables shall be used as recommended by the “USER’S GUIDELINES for Electrical Installations for Apparatus Explosive Gas Atmospheres in General Industry,” published in 1994. (1) Installation Area •...
  • Page 70 So, (2) Repair Yokogawa-specified cable entry devices for flameproof type shall be used to meet this demand. If the flameproof apparatus requires repair, turn off the power and transport it to a safety (non-hazardous) location.
  • Page 71 REVISION RECORD Title: Model EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitter Manual No.: IM 1C22J1-01E Edition Date Page Revised Item Mar. 1998 • Add FOUNDATION Fieldbus protcol version to ‘NOTE’ notice. • Add Item 6 to the Wiring Precautions. 10-1 10.1.1 •...
  • Page 72 Blank Page...

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