User s Manual. Model EJ110, EJ120 and EJ130 Differential Pressure Transmitter [Style: S2] IM 01C20B01-01E 9th Edition. Yokogawa Electric Corporation

Transcription

1 User s Manual Model EJ0, EJ0 and EJ30 Differential Pressure Transmitter [Style: S] IM 0C0B0-0E Yokogawa Electric Corporation IM 0C0B0-0E 9th Edition

2 CONTENTS CONTENTS. INTRODUCTION Safe Use of This Product Warranty HANDLING CAUTIONS Model and Specifications Check Unpacking Storage Selecting the Installation Location Pressure Connection Waterproofing of Cable Conduit Connections Restrictions on Use of Radio Transceivers Insulation Resistance Test and Dielectric Strength Test Installation of Intrinsically Safe Type Transmitters TIIS Intrinsically Safe Type FM Intrinsically Safe Type Installation of Flameproof Type Transmitters TIIS Flameproof Type FM Explosionproof Type EMC Conformity Standards COMPONENT NAMES INSTALLATION Precautions Mounting Changing the Process Connection To Use Left Side as High Pressure Side Rotating Pressure-Detector Assembly Using the BRAIN TERMINAL BT INSTALLING IMPULSE PIPING Impulse Piping Installation Precautions Connecting Impulse Piping to the Transmitter Routing the Impulse Piping Impulse Piping Connection Examples Gas Flow Measurement Liquid Flow Measurement Steam Flow Measurement Liquid Level Measurement in an Open Tank Liquid Level Measurement in a Closed Tank (Dry Leg) Liquid Level Measurement in a Closed Tank (Wet Leg) Gas Pressure Measurement Liquid Pressure Measurement Steam Pressure Measurement FD No. IM 0C0B0-0E 9th Edition: June 006(KP) All Rights Reserved, Copyright 993, Yokogawa Electric Corporation i IM 0C0B0-0E

3 6. WIRING Wiring Precautions Selecting the Wiring Materials Connections of External Wiring to Terminal Box Power Supply Wiring Connection External Indicator Connection BRAIN TERMINAL BT00 Connection Check Meter Connection Wiring Loop Configuration () General-use Type and Flameproof Type () Intrinsically Safe Type Wiring Installation () General-use Type and TIIS Intrinsically Safe Type () TIIS Flameproof Type Grounding Power Supply Voltage and Load Resistance OPERATION Gas Flow Measurement Preparation for Operation Zero Adjustments Starting Operation Shutting Down Operation Liquid Flow Measurement Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Steam Flow Measurement Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Liquid Level Measurement in an Open Tank Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Fluid Level Measurement in a Closed Tank (Dry Leg) Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Liquid Level Measurement in a Closed Tank (Wet Leg) Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Measurement Range for Liquid Level Measurement (Determining Differential Pressure Range) Gas Pressure Measurement Preparation for Operation CONTENTS ii IM 0C0B0-0E

4 7.8. Zero Adjustment Starting Operation Shutting Down Operation Liquid Pressure Measurement Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Steam Pressure Measurement Preparation for Operation Zero Adjustment Starting Operation Shutting Down Operation Venting or Draining Transmitter Pressure-Detector Section Draining Condensate Venting Gas BRAIN TERMINAL BT00 OPERATION BT00 Operation Precautions Connecting the BT Conditions of Communication Line BT00 Operating Procedures Key Layout Operating Key Functions () Alphanumeric Keys and SHIFT Keys () Function Keys Calling Up Menu Addresses Using the Operating Keys Setting Parameters Using the BT Parameter Usage and Selection Setting Parameters () Tag No. Setup () Calibration Range Setup (3) Damping Time Constant Setup (4) Output Mode and Integral Indicator Display Mode Setup (5) Output Signal Low Cut Mode Setup (6) Integral Indicator Scale Setup (7) Unit Setup for Displayed Temperature (8) Unit Setup for Displayed Static Pressure (9) Operation Mode Setup (0) Impulse Line Connection Orientation Setup () Output Status Display/Setup when a CPU Failure () Output Status Setup when a Hardware Error Occurs (3) Bi-directional Flow Measurement Setup (4) Range Change while applying Actual Inputs (5) Zero Point Adjustment (6) Test Output Setup (7) User Memo Fields Displaying Data Using the BT Displaying Measured Data Display Transmitter Model and Specifications Self-Diagnostics Checking for Problems () Identifying Problems with BT () Checking with Integral Indicator Errors and Countermeasures CONTENTS iii IM 0C0B0-0E

5 9. MAINTENANCE Overview Calibration Instrument Selection Calibration Disassembly and Reassembly Replacing the Integral Indicator Replacing the CPU Board Assembly Cleaning and Replacing the Capsule Assembly Replacing the Process Connector Gaskets Troubleshooting Basic Troubleshooting Troubleshooting Flow Charts PARAMETER SUMMARY GENERAL SPECIFICATIONS Standard Specifications Model and Suffix Codes Optional Specifications Dimensions INSTALLATION AND OPERATING PRECAUTIONS FOR TIIS INTRINSICALLY SAFE EQUIPMENT... EX-A03E INSTALLATION AND OPERATING PRECAUTIONS FOR TIIS FLAMEPROOF EQUIPMENT... EX-B03E Customer Maintenance Parts List REVISION RECORD DPharp EJ Series Transmitter Section...CMPL 0C0A0-0E Model EJ0, EJ0 and EJ30 Differential Pressure Transmitter...CMPL 0C0B00-0E Internal Steam Tracing (Option Code: /H) and External Steam Tracing (Option Code: /H)... CMPL 0C0B-0E Long Vent Plug (Option Code: /U)...CMPL 0C0B-0E CONTENTS iv IM 0C0B0-0E

6 . INTRODUCTION. INTRODUCTION Thank you for purchasing the DPharp EJ differential pressure transmitter. Your DPharp Pressure Transmitter was precisely calibrated at the factory before shipment. To ensure both safety and efficiency, please read this manual carefully before you operate the instrument. Regarding This Manual This manual should be provided to the end user. The contents of this manual are subject to change without prior notice. All rights reserved. No part of this manual may be reproduced in any form without Yokogawa s written permission. Yokogawa makes no warranty of any kind with regard to this manual, including, but not limited to, implied warranty of merchantability and fitness for a particular purpose. If any question arises or errors are found, or if any information is missing from this manual, please inform the nearest Yokogawa sales office. The specifications covered by this manual are limited to those for the standard type under the specified model number break-down and do not cover custom-made instruments. Please note that changes in the specifications, construction, or component parts of the instrument may not immediately be reflected in this manual at the time of change, provided that postponement of revisions will not cause difficulty to the user from a functional or performance standpoint. Yokogawa assumes no responsibilities for this product except as stated in the warranty. If the customer or any third party is harmed by the use of this product, Yokogawa assumes no responsibility for any such harm owing to any defects in the product which were not predictable, or for any indirect damages. The following safety symbols are used in this manual: WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. IMPORTANT Indicates that operating the hardware or software in this manner may damage it or lead to system failure. NOTE Draws attention to information essential for understanding the operation and features.. Safe Use of This Product For the safety of the operator and to protect the instrument and the system, please be sure to follow this manual s safety instructions when handling this instrument. If these instructions are not heeded, the protection provided by this instrument may be impaired. In this case, Yokogawa cannot guarantee that the instrument can be safely operated. Please pay special attention to the following points: (a) Installation This instrument may only be installed by an engineer or technician who has an expert knowledge of this device. Operators are not allowed to carry out installation unless they meet this condition. - IM 0C0B0-0E

7 . INTRODUCTION With high process temperatures, care must be taken not to burn yourself by touching the instrument or its casing. Never loosen the process connector nuts when the instrument is installed in a process. This can lead to a sudden, explosive release of process fluids. When draining condensate from the pressure detector section, take appropriate precautions to prevent the inhalation of harmful vapors and the contact of toxic process fluids with the skin or eyes. When removing the instrument from a hazardous process, avoid contact with the fluid and the interior of the meter. All installation shall comply with local installation requirements and the local electrical code. (b) Wiring The instrument must be installed by an engineer or technician who has an expert knowledge of this instrument. Operators are not permitted to carry out wiring unless they meet this condition. Before connecting the power cables, please confirm that there is no current flowing through the cables and that the power supply to the instrument is switched off. (c) Operation Wait 5 min. after the power is turned off, before opening the covers. (d) Maintenance Please carry out only the maintenance procedures described in this manual. If you require further assistance, please contact the nearest Yokogawa office. Care should be taken to prevent the build up of dust or other materials on the display glass and the name plate. To clean these surfaces, use a soft, dry cloth. (e) Explosion Protected Type Instrument Users of explosion proof instruments should refer first to section.9 and.0 (Installation of an Explosion Protected Instrument) of this manual. The use of this instrument is restricted to those who have received appropriate training in the device. (f) Modification Yokogawa will not be liable for malfunctions or damage resulting from any modification made to this instrument by the customer.. Warranty The warranty shall cover the period noted on the quotation presented to the purchaser at the time of purchase. Problems occurring during the warranty period shall basically be repaired free of charge. If any problems are experienced with this instrument, the customer should contact the Yokogawa representative from which this instrument was purchased or the nearest Yokogawa office. If a problem arises with this instrument, please inform us of the nature of the problem and the circumstances under which it developed, including the model specification and serial number. Any diagrams, data and other information you can include in your communication will also be helpful. The party responsible for the cost of fixing the problem shall be determined by Yokogawa following an investigation conducted by Yokogawa. The purchaser shall bear the responsibility for repair costs, even during the warranty period, if the malfunction is due to: - Improper and/or inadequate maintenance by the purchaser. - Malfunction or damage due to a failure to handle, use, or store the instrument in accordance with the design specifications. - Use of the product in question in a location not conforming to the standards specified by Yokogawa, or due to improper maintenance of the installation location. - Failure or damage due to modification or repair by any party except Yokogawa or an approved representative of Yokogawa. - Malfunction or damage from improper relocation of the product in question after delivery. - Reason of force majeure such as fires, earthquakes, storms/floods, thunder/lightening, or other natural disasters, or disturbances, riots, warfare, or radioactive contamination. Take care not to create sparks when accessing the instrument or peripheral devices in a hazardous location. - IM 0C0B0-0E

8 . HANDLING CAUTIONS. HANDLING CAUTIONS The EJ0, EJ0 and EJ30 Differential Pressure Transmitter are thoroughly tested at the factory before shipment. When the transmitters are delivered, visually check them to make sure that no damage occurred during shipment. Also check that all transmitter mounting hardware shown in Figure. was received. If the instrument was ordered without the mounting bracket, the transmitter mounting hardware will not be included. After checking the transmitter, repack it in its original packaging in the way it was delivered, then keep it like this until installation. This chapter describes important cautions regarding how to handle the transmitter. Read carefully before using the transmitter. As for the cautions other than described in this chapter, please read the cautions in the relative chapters. If you have any problems or questions, contact your nearest Yokogawa service station or sales representative. Transmitter mounting bolts. Model and Specifications Check The model name and specifications are indicated on the name plate attached to the case. This information should be included in all correspondence. If the reverse operating mode was ordered (reverse signal), REVERSE will be inscribed in field *; if square root display mode was ordered, SQRT is inscribed in field *; if square root output mode was ordered, SQRT is inscribed in field *3. F00E.EPS Figure. Name Plate Example of TIIS Flameproof Type. Unpacking When moving the transmitter to the installation site, keep it in its original packaging. Then, unpack the transmitter there to avoid damage on the way. U-bolt Mounting bracket U-bolt nuts Figure. Transmitter Mounting Hardware F00E.EPS.3 Storage The following precautions must be observed when storing the instrument, especially for a long period. () Select a storage area which meets the following conditions: It is not exposed to rain or water, It suffers minimum vibration and shock, It has an ambient temperature and relative humidity within the following ranges: Ambient temperature: 40 to 85 C for a transmitter without integral indicator 30 to 80 C for a transmitter with integral indicator Relative humidity: 5% to 00% R.H. (at 40 C) - IM 0C0B0-0E

9 . HANDLING CAUTIONS However, it is preferable at normal temperature and humidity (approx. 5 C and 65% R.H.). () When storing the transmitter, repack it as nearly as possible to the way it was packed when delivered from the factory. (3) If storing a transmitter that has been used, thoroughly clean the high and low-pressure fluid chambers inside the cover flanges, so that no measured fluid remains in them. In addition, make sure before storing that the pressure-detector and transmitter assemblies are securely mounted..4 Selecting the Installation Location The transmitter is designed to withstand severe environmental conditions. However, to ensure stable and accurate operation for many years, the following precautions must be observed when selecting an installation location. () Ambient Temperature Avoid locations subject to wide temperature variations or a significant temperature gradient. If the location is exposed to radiant heat from plant equipment, provide adequate thermal insulation and/or ventilation. () 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. (3) 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). (4) Installation of Explosion-protected Transmitters Explosion-protected transmitters can be installed in hazardous areas according to the types of gases for which they are certified. Important precautions regarding such use are included at the end of this manual under Installation and Operating Precautions for Intrinsically Safe Explosion-Protected Instruments and Installation and Operating Precautions for Flameproof Explosion-Protected Instruments. Read these thoroughly and carefully..5 Pressure Connection WARNING () Instrument installed in the process is under pressure. Never loosen or tighten the process connector bolts as it may cause dangerous spouting of process fluid. () During draining condensate or venting gas in transmitter pressure-detector section, take appropriate care to avoid contact with the skin, eyes or body, or inhalation of vapors, if the accumulated process fluid may be toxic or otherwise harmful. Since draining condensate or bleeding off gas gives the pressure measurement disturbance, this should not be done when the loop is in operation. The following precautions must be observed in order to safely operate the transmitter under pressure. () Make sure that all four process connector bolts are tightened firmly. () Make sure that there are no leaks in the impulse piping. (3) Never apply a pressure higher than the specified maximum working pressure. IMPORTANT Maximum working pressure of the model EJ0 differential pressure transmitter is 50 kpa{0.5 kgf/cm }. Should the pressure exceed 50 kpa{0.5 kgf/cm }, it is possible to break the sensor. Proceed with caution when applying pressure..6 Waterproofing of Cable Conduit Connections Apply a non-hardening sealant to the threads to waterproof the transmitter cable conduit connections. (See Figure 6.4.a, 6.4.b, 6.4.c and 6.4.d.) - IM 0C0B0-0E

10 . HANDLING CAUTIONS.7 Restrictions on Use of Radio Transceivers IMPORTANT Although the transmitter has been designed to resist high frequency electrical noise, if a radio transceiver is used near the transmitter or its external wiring, the transmitter may be affected by high frequency noise pickup. To test for such effects, bring the transceiver in use slowly from a distance of several meters from the transmitter, and observe the measurement loop for noise effects. Thereafter, always use the transceiver outside the area affected by noise..8 Insulation Resistance Test and Dielectric Strength Test Since the transmitter has undergone insulation resistance and dielectric strength tests at the factory before shipment, normally these tests are not required. However, if required, observe the following precautions in the test procedures. () Do not perform such tests more frequently than is absolutely necessary. Even test voltages that do not cause visible damage to the insulation may degrade the insulation and reduce safety margins. () Never apply a voltage exceeding 500V DC (00V DC with an internal lightning protector) for the insulation resistance test, nor a voltage exceeding 500V AC (00V AC with an internal lightning protector) for the dielectric strength test. (3) Before conducting these tests, disconnect all signal lines from the transmitter terminals. Perform the tests in the following procedure: Insulation Resistance Test () Short-circuit the + and SUPPLY/BT terminals in the terminal box. () Turn OFF the insulation tester. Then connect the insulation tester plus (+) lead wire to the shorted SUPPLY/BT terminals and the minus ( ) leadwire to the grounding terminal. (3) Turn ON the insulation tester power and measure the insulation resistance. The voltage should be applied short as possible to verify that the insulation resistance is at least 0MΩ. (4) After completing the test and being very careful not to touch exposed conductors disconnect the insulation tester and connect a 00kΩ resistor between the grounding terminal and the shortcircuiting SUPPLY/BT 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 () Short-circuit the + and SUPPLY/BT terminals in the terminal box. () Turn OFF the dielectric strength tester. Then connect the tester between the shorted SUPPLY/BT terminals and the grounding terminal. Be sure to connect the grounding lead of the dielectric strength tester to the ground terminal. (3) Set the current limit on the dielectric strength tester to 0mA, then turn ON the power and gradually increase the test voltage from 0 to the specified voltage. (4) When the specified voltage is reached, hold it for one minute. (5) After completing this test, slowly decrease the voltage to avoid any voltage surges..9 Installation of Intrinsically Safe Type Transmitters WARNING To pressure the safety of explosionproof equipment requires great care during mounting, wiring, and piping. Safety requirements also place restrictions on maintenance and repair activities. Please read the following sections very carefully..9. TIIS Intrinsically Safe Type The TIIS intrinsically safe type differential pressure transmitter is designed for hazardous areas where explosive or inflammable gases or vapors may be present as specified in the Recommended Practice for Explosion-Protected Electrical Installations in General Industries (979), established by the Research Institute of Industrial Safety, Ministry of Labor (Japan). (These transmitters can be installed in Division 0, and areas.) To preserve the safety of intrinsically safe type equipment requires great care during mounting, wiring, and piping and conduit installation. -3 IM 0C0B0-0E

11 . HANDLING CAUTIONS The safety requirements also place restrictions on maintenance and repair activities. Users absolutely must read the Installation and Operating Precautions for Intrinsically Safe Explosion-Protected Instruments at the end of this manual. Confirming the certification mark A certification mark with the certification number is applied on the instrument s body. There is a fixed correspondence between certification number and the safety barrier to be used as shown below. Please cross out the unnecessary certification mark depending on a barrier. For connecting with BARD-800 safety barrier; Certification No.: 56 (without lightning protector) 563 (with lightning protector) For connecting with BARD-400 safety barrier; Certification No.: 545 Please also cross out the unnecessary rating data on the data plate accordingly. If there is no label with the number corresponding to the barrier to be used, you cannot use that barrier. Please use the correct barrier corresponding to the certification number on the instrument..9. FM Intrinsically Safe Type Caution for FM Intrinsically safe type. Note. Hazardous locations *Intrinsically Safe for Class I, Division, Groups A, B, C & D. Class II, Division, Groups E, F & G and Class III, Division Hazardous Locations. *Outdoor hazardous locations, NEMA 4. *Temperature Class : T4 *Ambient temperature : 0 to 60 C Note. Entity Parameters *Vmax = 3.5 V DC, Imax = 93 ma, Pmax =. W, Ci = nf, Li =.04 mh *Entity Installation Requirements Vmax Voc or Vt, Imax Isc or It, Ca Ci + Ccable, La Li + Lcable Note 3. Installation *Barrier must be installed in an enclosure that meets the requirements of ANSI/ISA S8.0. *Resistance between lnt. Safe Gnd and earth ground must be less than ohm. *Control equipment connected to barrier must not use or generate more than 50 Vrms or Vdc. *Installation should be in accordance with ANSI/ ISA RP.6 Installation of Intrinsically Safe Systems for Hazardous (Classified) Locations and the National Electric Code (ANSI/NFPA 70). *The configuration of associated apparatus must be FMRC Approved. *Dust-tight conduit seal must be used when installed in a Class II, III, Group E, F and G environments. *No revision to drawing without prior FMRC Approved. *Associated apparatus manufacturer s installation drawing must be followed when installing this apparatus. *The maximum power delivered from the barrier must not exceed. W. Hazardous Location Class I, II, III, Division, Groups A, B, C, D, E, F, G Transmitters Supply + CAUTION Nonhazardous Location Safety Barrier + + General Purpose Equipment + F003E.EPS When selecting cables for TIIS flameproof type transmitters, determine the cables' maximum allowable heat resistance depending on the process and ambient temperature condition on the transmitter as illustrated in Figure.3. Use cables having a maximum allowable heat resistance of at least 60 C for the transmitter in Region A and that of 75 C in Region B. Ambient Temperature ( C) Region B Figure.3 Selecting Cables Region A Process Temperature ( C) F007E.EPS -4 IM 0C0B0-0E

12 . HANDLING CAUTIONS.0 Installation of Flameproof Type Transmitters WARNING To pressure the safety of explosionproof equipment requires great care during mounting, wiring, and piping. Safety requirements also place restrictions on maintenance and repair activities. Please read the following sections very carefully..0. TIIS Flameproof Type The TIIS flameproof type differential pressure transmitter is designed for hazardous areas where inflammable gases or vapors may be present as specified in the Recommended Practice for Explosion-Protected Electrical Installations in General Industries (985), established by the Research Institute of Industrial Safety, Ministry of Labor (Japan). (These transmitters can be installed in Division and areas.) To preserve the safety of flameproof type equipment requires great care during mounting, wiring, and piping and conduit installation. The safety requirements also place restrictions on maintenance and repair activities. Users absolutely must read Installation and Operating Precautions for Flameproof Explosion-Protected Instruments at the end of this manual. CAUTION (For instruments without integral indicator) When the fill fluid near the sensor part moves from within, the instrument outputs a failure signal either high or low of the specific signal. In that case, generate the alarm to identify that the failure signal is output since the event may invalidate the flameproof approval. If the optional integral indicator is equipped, the indicator identifies the alarm on its display. Therefore, no other alarm generation is necessary..0. FM Explosionproof Type Caution for FM Explosionproof type Note. Hazardous locations: *Applicable standard: FM3600, FM365, FM380, NEMA 50, ANSI/NFPA 70. *Explosionproof for Class I, Division, Groups B, C and D. *Dust-ignitionproof for Class II, Division, Groups E, F and G. *Suitable for Class III, Division. *Outdoor hazardous locations, NEMA 4. Note. Wiring *All wiring shall comply with National Electrical Code ANSI/NEPA70 and Local Electrical Codes. *In hazardous location, wiring to be in conduit as shown in the figure. Note 3. Operation *WARNING: DO NOT OPEN COVER WHILE CIRCUIT IS ALIVE. *Take care not to generate mechanical spark when access to the instrument and peripheral devices in hazardous location. Note 4. Maintenance and Repair *The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void Factory Mutual Explosionproof Certification. Nonhazardous Locations Nonhazardous Location Equipment 4V DC Max. 4 to 0 ma DC Signal Hazardous Locations 8'' (457 mm) Max. Sealing Fitting Conduit EJ Series F006E.EPS. EMC Conformity Standards AS/NZS CISPR Hazardous Location Nonhazardous Location 4 to 0 ma DC to 5V DC Transmitter Power Supply DCS Display F005E.EPS Figure.4 Example of Using DCS (Distributed Control System) -5 IM 0C0B0-0E

13 3. COMPONENT NAMES 3. COMPONENT NAMES Process connection Pressure-detector section Terminal box Transmitter section Process connector Terminal box cover Cover flange CPU board assembly Cover flange bolt Integral indicator Zero-adjustment screw Drain/vent plug Setting pin (CN6) (Optional) Mounting screw Setting pin(cn6) position (Note ) H L Burn-out direction HIGH Output at burn-out 0% or higher (.6 ma DC) Cover H L LOW 5% or lower (3. ma DC) Note : Integral indicator is optional Display Symbol E.ZERO Meaning of Display Symbol Output mode is square root. (Display is not lit when proportional mode.) Display mode is square root. (Display is not lit when proportional mode.) The zero-adjustment screw is enabled. (Display is not lit when the screw is disabled. ) The output signal being zero-adjusted is increasing. The output signal being zero-adjusted is decreasing. Note : Insert the pin (CN6) as shown in the above figure into the H or L side (set to the L side for delivery). The setting can be confirmed by calling up parameter D5 using the BRAIN TERMINAL. Refer to Subsection (). F030E.EPS Figure 3. Component Names 3- IM 0C0B0-0E

14 4. INSTALLATION 4. INSTALLATION 4. Precautions Before installing the transmitter, read the cautionary notes in Section.4, Selecting the Installation Location. For additional information on the ambient conditions allowed at the installation location, see the Standard Specifications later in this manual. Horizontal pipe mounting Transmitter mounting bolts IMPORTANT When welding piping during construction, take care not to allow welding currents to flow through the transmitter. Do not step on this instrument after installation. U-bolt nuts Mounting bracket Vertical pipe mounting 50mm(-inch) pipe U-bolt 4. Mounting The transmitter is shipped with the process connections facing either up or down, according to the ordering specifications. Viewing the transmitter from the front, the connection on the right is the one that will connect to the high pressure side. To change the orientation of the process connections, refer to Section 4.3. The transmitter can be mounted on a nominal 50 mm (-inch) pipe using the mounting bracket supplied, as shown in Figure 4.. The transmitter can be mounted on either a horizontal or a vertical pipe. When mounting the bracket on the transmitter, tighten the (four) bolts that hold the transmitter to a torque of approximately 39 N m {4 kgf-m}. The dimension between the impulse piping connection ports is set at 54 mm at the factory (Figure 4.). By changing the orientation of the process connector, the dimension can be changed 5 mm or 57 mm. U-bolt nuts Mounting bracket Figure 4. Transmitter Mounting Transmitter mounting bolts 50mm(-inch) pipe U-bolt 57 mm 54 mm 5 mm Figure 4. Process Connection Distances F040E.EPS F040E.EPS 4- IM 0C0B0-0E

15 4. INSTALLATION 4.3 Changing the Process Connection The transmitter is shipped with the process connector specified at the time of ordering. To make a change such as modifying the process connector attached to the upside of the cover flange on shipment to be attached to the downside (Section 7., Gas Flow Measurement ), follow the procedure below. To begin, use a wrench to slowly and gently unbolt the process connector (s) and unscrew the drain (vent) plug (s). Then remove the process connector (s) and drain (vent) plug (s) and remount them on the opposite sides. Wind sealing tape around the drain (vent) plug threads (* in figure below), and apply lubricant (* in figure below) when screwing it in. Tighten the connector bolts uniformly to the torque shown below. Table 4.3. Process Connector Tightening Torque Model Name EJ0 and EJ0 EJ30 Torque 39 to 49 N. m {4 to 5 kgf. m} 49 to 59 N. m {5 to 6 kgf. m} T040E.EPS 4.4 To Use Left Side as High Pressure Side 4.4. Rotating Pressure-Detector Assembly 80 The procedure below can be used to turn the pressuredetector assembly 80 to make the left side the high pressure side. Perform this operation in a maintenance shop with the necessary tools laid out and ready for use, and then install the transmitter in the field after making the change. () Referring to Subsection 9.4., remove the amplifier unit. () Use an Allen wrench (JIS B4648, nominal 5 mm) to remove the two Allen screws at the joint between the pressure-detector assembly and case. (3) Leaving the case in position, rotate the pressuredetector assembly 80. (4) The drain (vent) plugs are now oriented upward. If the process connections must be oriented upward for use, follow the procedure in Section 4.3 to interchange the plugs and process connectors. (5) Referring to Subsection 9.4., reinstall the amplifier unit. (6) Remount the cover. Process connector Process connector gasket Before change * Drain / vent plug * F0403E.EPS Figure 4.3 Changing Process Connection After change (after rotating 80 ) F0404E.EPS Figure 4.4 Before and After Modification 4- IM 0C0B0-0E

16 4. INSTALLATION 4.4. Using the BRAIN TERMINAL BT00 This method is applicable only to the Model EJ0- DL, EJ0-DM, EJ0 and EJ30-DM. With the BT00 you can make the left side the high pressure side without going through the procedure of removing the amplifier unit and Allen screws described in Subsection To make the change, select parameter number D45: H/ L SWAP and select REVERSE (left side: high pressure; right side: low pressure). To change back, select NORMAL (right side: high pressure; left side: low pressure). When you receive the transmitter, this parameter will be set to NORMAL. Output NORMAL Input REVERSE F0405E.EPS Figure 4.5 Input/Output Relationship IMPORTANT Since the H/L label plate on the capsule assembly will remain unchanged even if this function is used, use this function only if you cannot switch the impulse piping. If the D45: H/L SWAP setting is changed, the input/output relationship is reversed as shown in Figure 4.5; be sure this is understood by all. Whenever possible, use the procedure in Subsection IM 0C0B0-0E

17 5. INSTALLING IMPULSE PIPING 5. INSTALLING IMPULSE PIPING 5. Impulse Piping Installation Precautions The impulse piping that connects the process pressure to the transmitter must convey the process pressure accurately. If, for example, gas collects in a liquidfilled impulse piping, or the drain of a gas-filled impulse piping becomes plugged, the impulse piping will not convey the pressure accurately. Since this will cause errors in the measurement output, select the proper piping method for the process fluid (gas, liquid, or steam). Pay careful attention to the following points when routing the impulse piping and connecting the impulse piping to the transmitter. () Changing the Process Connector Piping Connections The impulse piping connection distances can be changed between 5 mm, 54 mm (position when shipped), and 57 mm by changing the orientation of the process connectors. This is convenient for aligning the impulse piping with the process connectors when connecting the piping. 57 mm 54 mm 5 mm 5.. Connecting Impulse Piping to the Transmitter Figure 5..b Process Connector Impulse Piping Connection Distances F050E.EPS () Check the High and Low Pressure Connections on the Transmitter (Figure 5..a) Symbols H and L are engraved on a capsule assembly to indicate high and low pressure side. Connect the high impulse piping to the H side, and the low impulse piping to the L side. Low pressure connection Symbols H and L are engraved High pressure connection Bolt (3) Tightening the Process Connector Mounting Bolts The transmitter is shipped with the process connector mounting bolts only loosely tightened. After connecting the impulse piping, tighten these bolts securely. (4) Removing the Impulse Piping Connecting Port Dustproof Cap The impulse piping connection ports of the transmitter and 3-valve manifold have plastic caps to protect against dust. These caps must be removed before connecting the piping. (Be careful not to damage the threads when removing these caps. Never insert a screw driver or other tool between the cap and the port threads to remove the cap.) Figure 5..a Capsule Assembly Data Plate Process connectors F050E.EPS (5) Connecting the Transmitter and 3-Valve Manifold A 3-valve manifold consists of two stop valves to block process pressure and an equalizing valve to equalize the pressures on the high and low pressure sides of the transmitter. Such a manifold makes it easier to disconnect the transmitter from the impulse piping, and is convenient when adjusting the transmitter zero point. There are two types of 3-valve manifold: the pipemounting type and the direct-mounting type; care should be taken with respect to the following points when connecting the manifold to the transmitter. 5- IM 0C0B0-0E

18 5. INSTALLING IMPULSE PIPING Pipe-Mounting Type 3-Valve Manifold (Figure 5..c) <> Screw nipples into the connection ports on the transmitter side of the 3-valve manifold, and into the impulse piping connecting ports on the process connectors. (To maintain proper sealing, wind sealing tape around the nipple threads.) <> Mount the 3-valve manifold on the 50mm (- inch) pipe by fastening a U-bolt to its mounting bracket. Tighten the U-bolt nuts only lightly at this time. <3> Install the pipe assemblies between the 3-valve manifold and the process connectors and lightly tighten the ball head lock nuts. (The ball-shaped ends of the pipes must be handled carefully, since they will not seal properly if the ball surface is scratched or otherwise damaged.) <4> Now tighten the nuts and bolts securely in the following sequence: Process connector bolts transmitter-end ball head lock nuts 3-valve manifold ball head lock nuts 3-vavle manifold mounting bracket U- bolt nuts. Direct-Mounting Type 3-Valve Manifold (Figure 5..d) <> Remove the process connectors and the process connector gaskets from the transmitter. (The process connector mounting bolts are only lightly tightened before shipment, and can be removed by hand.) <> Mount the 3-valve manifold on the transmitter. (When mounting, use the two gaskets and the four bolts provided with the 3-valve manifold. Tighten the bolts evenly.) <3> Mount the process connectors and gaskets removed in <> above on the top of the 3-valve manifold (the side on which the impulse piping will be connected). (Use the four bolts removed in <> above.) Bolts Process connector Gasket Vent plug (optional) Impulse piping Equalizing (balancing) valve 3-velve manifold Nipple Ball head lock nut Stop valve (low pressure side) Stop valve (high pressure side) Pipes Pipe Pipe Impulse piping Ball head lock nut Stop valve (low pressure side) 50mm (-inch) pipe Process connector bolts Nipple Process connector Equalizing valve 3-valve manifold F0503E.EPS Figure 5..c 3-Valve Manifold (Pipe-Mounting Type) Stop valve (high pressure side) F0504E.EPS Figure 5..d 3-Valve Manifold (Direct-Mounting Type) 5- IM 0C0B0-0E

19 5. INSTALLING IMPULSE PIPING NOTE After completing the connection of the transmitter and 3-valve manifold, be sure to CLOSE the low pressure and high pressure stop valves, OPEN the equalizing valve, and leave the manifold with the equalizing valve OPEN. You must do this in order to avoid overloading the transmitter from either the high or the low pressure side when beginning operation. This instruction must also be strictly followed as part of the startup procedure (Chapter 7). 5.. Routing the Impulse Piping () Process Pressure Tap Angles (Figure 5..) If condensate, gas, sediment or other extraneous material in the process piping gets into the impulse piping, pressure measurement errors may result. To prevent such problems, the process pressure taps must be angled as shown in Figure 5.. according to the kind of fluid being measured. NOTE If the process fluid is a gas, the taps must be vertical or within 45 either side of vertical If the process fluid is a liquid, the taps must be horizontal or below horizontal, but not more than 45 below horizontal. If the process fluid is steam or other condensing vapor, the taps must be horizontal or above horizontal, but not more than 45 above horizontal. [Gas] Pressure taps Process piping [Liquid] [Steam] 45 F0505E.EPS () Position of Process Pressure Taps and Transmitter If condensate (or gas) generated in the impulse piping were allowed to accumulate there, then it would be necessary to remove it periodically by opening drain (or vent) plugs. However, this would generate a transient disturbance in the pressure measurement, and therefore it is necessary to position the taps and route the impulse piping so that any extraneous liquid or gas generated in the leadlines returns naturally to the process piping. If the process fluid is a gas, then as a rule the transmitter must be located higher than the process pressure taps. If the process fluid is a liquid or steam, then as a rule the transmitter must be located lower than the process pressure taps. (3) Impulse Piping Slope The impulse piping must be routed with only an upward or downward slope. Even for horizontal routing, the impulse piping should have a slope of at least /0 to prevent condensate (or gases) from stagnating in the pipes. (4) Temperature Difference Between Impulse Piping If there is a temperature difference between the high and low impulse piping, the density difference of the fluids in the two lines will cause an error in the measurement pressure. When measuring flow, impulse piping must be routed together so that there is no temperature difference between them. (5) Condensate Pots for Steam Flow Measurement If the liquid in the impulse piping repeatedly condenses or vaporizes as a result of changes in the ambient or process temperature, this will cause a difference in the fluid head between the high pressure and low pressure sides. To prevent measurement errors due to these head differences, condensate pots are used when measuring steam flow. Figure 5.. Process Pressure Tap Angle (For Horizontal Piping) 5-3 IM 0C0B0-0E

20 5. INSTALLING IMPULSE PIPING (6) Preventing Wind Speed Effects in Very Low Differential Pressure Measurement IMPORTANT When using a differential pressure transmitter to measure very low pressures (draft pressure), the low pressure connection port is left open to atmospheric pressure (the reference pressure). Any wind around the differential pressure transmitter will therefore cause errors in the measurement. To prevent this, it will be necessary either to enclose the transmitter in a box, or to connect a impulse piping to the low pressure side and insert its end into a wind-excluding pot (cylindrical with a base plate). The transmitter impulse piping connections are shown for a vertical impulse piping connection configuration in which the direction of connections is either upwards or downwards (as viewed from the front). If the impulse piping is long, bracing or supports should be provided to prevent vibration. The impulse piping material used must be compatible with the process pressure, temperature, and other conditions. A variety of process pressure tap valves (main valves) are available according to the type of connection (flanged, screwed, welded), construction (globe, gate, or ball valve), temperature and pressure. Select the type of valve most appropriate for the application. (7) Preventing Freezing If there is any risk that the process fluid in the impulse piping or transmitter could freeze, use a steam jacket or heater to maintain the temperature of the fluid. 5.. Gas Flow Measurement Differential pressure transmitter Vent plug Vent valve NOTE Impulse piping support After completing the connections, close the valves on the process pressure taps (main valves), the valves at the transmitter (stop valves), and the impulse piping drain valves, so that condensate, sediment, dust and other extraneous material cannot enter the impulse piping. 3-valve manifold Plug* Tee Union or flange * Plug Impulse piping(note ) 5 mm(/-inch) Union or flange 5. Impulse Piping Connection Examples Tap valve Figures 5.. through 5..9 show examples of typical impulse piping connections for gas, liquid and steam flow measurements. Before connecting the transmitter to the process, study the transmitter installation location, the process piping layout, and the characteristics of the process fluid (corrosiveness, toxicity, flammability, etc.), etc. and make appropriate changes and additions to the connection configurations. Note the following points when referring to these piping examples. The high pressure connecting port on the transmitter is shown on the right (as viewed from the front). Transmitter mounting pipe 50 mm(-inch) Orifice Note : Typical impulse piping size. Figure 5.. Gas Flow Measurement Process piping F0506E.EPS 5-4 IM 0C0B0-0E

21 5. INSTALLING IMPULSE PIPING 5.. Liquid Flow Measurement Process piping Union or flange Impulse piping (Note ) 5 mm (/-inch) 3-valve manifold Differential pressure transmitter Tap valve Tee Union or flange Orifice Plug Plug* Transmitter mounting pipe 50 mm (-inch) Impulse piping support Drain valve Vent screw Vent plug (optional) Drain plug Note : Typical impulse piping size Note : Use of plug with vent screw is recommended for convenience in bleeding gas from manifold pipes. Figure 5.. Liquid Flow Measurement * * Note F0507E.EPS 5..4 Liquid Level Measurement in an Open Tank Tap valve Impulse piping (Note ) 5 mm (/-inch) Fill plug (vent plug) Tee If using seal liquid Differential pressure transmitter Transmitter mounting pipe 50 mm (-inch) Note : Typical impulse piping size. Figure 5..4 Tee Open tank Union or flange Impulse piping support Drain valve Drain plug F0509E.EPS Liquid Level Measurement in an Open Tank 5..5 Liquid Level Measurement in a Closed Tank (Dry Leg) 5..3 Steam Flow Measurement Impulse piping (Note ) 5 mm (/-inch) Tap valve Closed tank Condensate pot (Note 3) Union or flange Tap valve Vent plug Tee Impulse piping (Note ) 5 mm (/-inch) Tee Union or flange 3-valve manifold Differential pressure transmitter Process piping Orifice Vent screw * Plug Plug* * Vent plug (optional) Note Transmitter mounting pipe 50 mm (-inch) Impulse piping support Drain valve Drain plug Note : Typical impulse piping size. Note : Use of plug with vent screw is recommended for convenience in bleeding gas from manifold pipes. Note 3: Mount the two condensate pots at the same height. F0508E.EPS Union or flange 3-valve manifold Differential pressure transmitter Drain plug * Plug* Vent screw * Note Plug Vent plug (optional) Transmitter mounting pipe 50 mm (-inch) Impulse piping support Drain valve Note : Typical impulse piping size. Note : Use of plug with vent screw is recommended for convenience in bleeding gas from manifold pipes. Figure 5..5 F050E.EPS Liquid Level Measurement in a Closed Tank (Dry Leg) Figure 5..3 Steam Flow Measurement 5-5 IM 0C0B0-0E

22 5. INSTALLING IMPULSE PIPING 5..6 Liquid Level Measurement in a Closed Tank (Wet Leg) Condensate pot (Note 3) Vent plug Vent plug Impulse piping (Note ) 5 mm (/-inch) Vent plug Tee Tee Tap valve Closed tank 5..8 Liquid Pressure Measurement Tee Impulse piping (Note ) 5 mm (/-inch) Union or flange Process piping Tap valve Vent plug Tee Union or flange Union or flange Differential pressure transmitter Stop valve 3-valve manifold Plug* Vent screw Impulse piping support Differential pressure transmitter Drain valve * * Note Plug Vent plug (optional) Transmitter mounting pipe 50 mm (-inch) Impulse piping support Drain plug Note : Typical impulse piping size. Note : Use of plug with vent screw is recommended for convenience in bleeding gas from manifold pipes. Note 3: Use a condensate pot if process fluid is at high temperature/pressure. F05E.EPS Figure 5..6 Liquid Level Measurement in a Closed Tank (Wet Leg) Transmitter mounting pipe 50 mm (-inch) Drain plug Note : Typical impulse piping size. Figure 5..8 Liquid Pressure Measurement Drain valve 5..9 Steam Pressure Measurement Process piping Fill plug (vent plug) F053E.EPS 5..7 Gas Pressure Measurement Tee Impulse piping (Note ) 5 mm (/-inch) Tap valve Fill plug (vent plug) Tee Union or flange Differential pressure transmitter If using seal liquid Transmitter mounting pipe 50 mm (-inch) Tee Drain plug Note : Typical impulse piping size. Union or flange Process piping Stop valve Drain valve Tap valve Impulse piping (Note ) 5 mm (/-inch) Impulse piping support F05E.EPS Union or flange Tee Differential pressure transmitter Transmitter mounting pipe 50 mm (-inch) Drain plug Note : Typical impulse piping size. Figure 5..9 Steam Pressure Measurement Stop valve Impulse piping support Drain valve F054E.EPS Figure 5..7 Gas Pressure Measurement 5-6 IM 0C0B0-0E

23 6. WIRING 6. WIRING 6. Wiring Precautions 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. 3.All threaded parts must be treated with waterproofing sealant. (A non-hardening silicone group sealant is recommended.) 4.To prevent noise pickup, do not pass signal and power cables through the same ducts. 5.Explosion-protected instruments must be wired in accordance with specific requirements (and, in certain countries, legal regulations) in order to preserve the effectiveness of their explosion-protected features. Refer to the Installation and Operating Precautions for TIIS Flameproof Equipment and Installation and Operating Precautions for TIIS Intrinsically Safe Equipment at the end of this manual for correct wiring. 4. In environments where oils, solvents, corrosive gases or liquids may be present, use wires or cables that are resistant to such substances. 5. It is recommended that crimp-on solderless terminal lugs (for 4 mm screws) with insulating sleeves be used for leadwire ends. 6.3 Connections of External Wiring to Terminal Box 6.3. Power Supply Wiring Connection Connect the power supply wiring to the SUPPLY/BT + and terminals. Power supply + Terminal box F060E.EPS Figure 6.3. Power Supply Wiring Connection 6. Selecting the Wiring Materials. Use stranded leadwires or cables which are the same as or better than 600V grade PVC insulated wire (JIS C3307) or equivalent for wiring.. Use shielded wires in areas that are susceptible to electrical noise. 3. In areas with higher or lower ambient temperatures, use wires or cables appropriate for such temperatures External Indicator Connection Connect wiring for external indicators to the METER + and terminals. (Note) Use a external indicator whose internal resistance is 0 Ω or less. Jumper (Remove jumper) External indicator + CAUTION If the transmitter is flameproof and the ambient temperature is 50 C or more, use cables having a maximum allowable heat resistance of least 75 C in consideration of the instrument s generation of heat or the cables self-heating. Power supply + Terminal box Figure 6.3. External Indicator Connection F060E.EPS 6- IM 0C0B0-0E