User’s Manual Low Flow Transmitter EJX115A and EJA115E IM 01C25K01-01E IM 01C25K01-01E 6th Edition
i Low Flow Transmitter EJX115A and EJA115E IM 01C25K01-01E 6th Edition Contents 1. Introduction................................................................................................ 1-1 Regarding This Manual................................................................................................. 1-1 2. 1.1 Safe Use of This Product ................................................................................. 1-2 1.2 Warranty.....................................................
ii 5. Installing Impulse Piping.......................................................................... 5-1 5.1 5.2 6. Connecting Process Piping to the Transmitter................................... 5-1 5.1.2 Routing the Process Piping................................................................ 5-1 Process Piping Connection Examples............................................................ 5-2 6.1 Wiring Precautions............................................................................
iii 8.5 9. Troubleshooting................................................................................................. 8-6 8.5.1 Basic Troubleshooting........................................................................ 8-6 8.5.2 Troubleshooting Flowcharts................................................................ 8-7 8.5.3 Alarms and Countermeasures............................................................ 8-9 General Specifications....................................................
1. 1-1 <1. Introduction> Introduction Thank you for purchasing the DPharp Low flow transmitter. Your 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. NOTE This manual describes the hardware configurations of the transmitters listed in below.
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.
(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.
1.3 <1. Introduction> 1-4 ATEX Documentation This is only applicable to the countries in European Union.
2. 2-1 <2. Handling Cautions> Handling Cautions This chapter provides important information on how to handle the transmitter. Read this carefully before using the transmitter. The transmitters are thoroughly tested at the factory before shipment. When taking delivery of an instrument, 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.
2.4 Selecting the Installation Location The transmitter is designed to withstand severe environmental conditions. However, to ensure that it will provide years of stable and accurate performance, take the following precautions when selecting the installation location. (a) Ambient Temperature Avoid locations subject to wide temperature variations or a significant temperature gradient.
<2. Handling Cautions> 2-3 (b) Never apply a voltage exceeding 500 V DC (100 V DC with an internal lightning protector) for the insulation resistance test, nor a voltage exceeding 500 V AC (100 V AC with an internal lightning protector) for the dielectric strength test. (c) Before conducting these tests, disconnect all signal lines from the transmitter terminals. The procedure for conducting these tests is as follows: 2.
IMPORTANT For combined approval types Once a device of multiple approval type is installed, it should not be re-installed using any other approval types. Apply a permanent mark in the check box of the selected approval type on the certification label on the transmitter to distinguish it from unused approval types. IMPORTANT All the blind plugs which accompany the EJX/ EJA-E transmitters upon shipment from the factory are certified by the applicable agency in combination with those transmitters.
<2. Handling Cautions> 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 Intrinsically safe and Nonincendive Approval. Note 2. Wiring • All wiring shall comply with National Electrical Code ANSI/NFPA70 and Local Electrical Codes. • When installed in Division 1, “FACTORY SEALED, CONDUIT SEAL NOT REQUIRED.
2.9.2 CSA Certification a. CSA Intrinsically Safe Type Caution for CSA Intrinsically safe and nonincendive type. (Following contents refer to “DOC No. ICS013-A13”) Note 1. Model EJX/EJA-E Series differential, gauge, and absolute pressure transmitters with optional code /CS1 are applicable for use in hazardous locations Certificate: 1606623 [For CSA C22.2] • Applicable Standard: C22.2 No.0, C22.2 No.0.4, C22.2 No.25, C22.2 No.94, C22.2 No.157, C22.2 No.213, C22.2 No.61010-1, C22.2 No.
<2. Handling Cautions> • Explosion-proof for Class I, Groups B, C and D. • Dustignition-proof for Class II/III, Groups E, F and G. • Enclosure: NEMA TYPE 4X • Temperature Code: T6...T4 • Ex d IIC T6...T4 • Enclosure: IP66/IP67 • Maximum Process Temperature: 120°C (T4), 100°C (T5), 85°C (T6) • Ambient Temperature: –50* to 75°C (T4), –50* to 80°C (T5), –50* to 75°C (T6) * –15°C when /HE is specified. • Supply Voltage: 42 V dc max. • Output Signal: 4 to 20 mA dc Note 2.
2.9.3 ATEX Certification (1) Technical Data a. ATEX Intrinsically Safe Ex ia Caution for ATEX Intrinsically safe type. Note 1. Model EJX/EJA-E Series pressure transmitters with optional code /KS21 for potentially explosive atmospheres: • No.
b. ATEX Flameproof Type 2-9 <2. Handling Cautions> Note 5. Special Conditions for Safe Use Caution for ATEX flameproof type. WARNING Note 1. Model EJX/EJA-E Series pressure transmitters with optional code /KF22 for potentially explosive atmospheres: • No. KEMA 07ATEX0109 X • Applicable Standard: EN 60079-0:2009, EN 60079-1:2007, EN 60079-31:2009 • Type of Protection and Marking Code: Ex d IIC T6...
● ATEX Intrinsically Safe Ex ic WARNING Caution for ATEX intrinsically safe Ex ic • Applicable Standard: EN 60079-0:2009/EN 60079-0:2012, EN 60079-11:2012 • Type of Protection and Marking Code: II 3G Ex ic IIC T4 Gc • Ambient Temperature: –30* to +60°C * –15°C when /HE is specified. • Ambient Humidity: 0 to 100% (No condensation) • Maximum Process Temperature: 120°C • IP Code: IP66 • Ambient pollution degree: 2 • Overvoltage category: I Note 1. Electrical Data Ui = 30 V Ci = 27.
2-11 <2. Handling Cautions> (5) Maintenance and Repair *1: The first digit in the three numbers next to the nine letters of the serial number appearing after “NO.” on the nameplate indicates the year of production. The following is an example of a serial number for a product that was produced in 2010: WARNING 91K819857 The instrument modification or parts replacement by other than an authorized Representative of Yokogawa Electric Corporation is prohibited and will void the certification.
<2. Handling Cautions> • Installation Requirements Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi, Co ≥ Ci + Ccable, Lo ≥ Li + Lcable Voc ≤ Vmax, Isc ≤ Imax, Ca ≥ Ci + Ccable, La ≥ Li + Lcable Uo, Io, Po, Co, Lo, Voc, Isc, Ca and La are parameters of barrier. Note 3. Installation • In any safety barrier used output current must be limited by a resistor 'R' such that Io=Uo/R. • The safety barrier must be IECEx certified. • Input voltage of the safety barrier must be less than 250 Vrms/Vdc.
2.11 Pressure Equipment Directive (PED) (1) General EJX/EJA-E Series pressure transmitters are categorized as piping under the pressure accessories section of directive 97/23/EC, which corresponds to Article 3, Paragraph 3 of PED, denoted as Sound Engineering Practice (SEP). <2. Handling Cautions> 2-13 (2) Installation Category I "Overvoltage category (Installation category)" describes a number which defines a transient overvoltage condition. It implies the regulation for impulse withstand voltage.
3. 3-1 <3. Component Names> Component Names Vertical impulse piping type Process connection Pressure-detector section Process connector Manifold Terminal box cover Horizontal impulse piping type Cover flange External indicator conduit connection (Note 1) Conduit connection Zeroadjustment screw (Note 2) Slide switch Integral indicator (Note 1) Mounting screw Vent plug Drain plug CPU assembly Range-setting switch (Note 1) (See section 7.
4. 4.1 Installation Precautions Vertical pipe mounting 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.” Transmitter mounting bolt 50 mm(2-inch) pipe IMPORTANT • When welding piping during construction, take care not to allow welding currents to flow through the transmitter.
4-2 <4. Installation> Vertical pipe mounting (Process connector downside) Vertical impulse piping type Bolt Transmitter mounting bolt Manifold Mounting bracket U-bolt nut Process connector gasket U-bolt *1 50 mm(2-inch) pipe Drain/vent plug Vertical pipe mounting (Process connector upside) *2 Horizontal impulse piping type Note: For a horizontal impulse piping type, moving the Manifold Assembly from the front side to the back cannot be made.
4-3 <4. Installation> 3) Tighten the two setscrews to fix the pressuredetector section and transmitter section together (at a torque of 1.5 N·m). Reposition the manifold assembly and drain (vent) plugs to the opposite side as described in subsection 4.3.
5. 5.1 5-1 <5. Installing Impulse Piping> Installing Impulse Piping Process Piping Installation Precautions The manifold contains a small-bore orifice. For the transmitter of a high pressure connection right side, the orifice is placed facing such a direction as to enable normal flow measurement when fluid is flowed from right to left (as viewed from the front). If the orifice is removed from the manifold, it must be replaced facing the correct direction.
<5. Installing Impulse Piping> (3) Preventing Freezing If there is any risk that the process fluid in the transmitter pressure-sensing assembly could freeze or solidify, use a steam jacket or heater to maintain the temperature of the fluid. 5-2 • A variety of process piping-mounted stop 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.
6.1 Wiring Precautions IMPORTANT • Lay wiring as far as possible from electrical noise sources such as large capacity transformers, motors, and power supplies. • Remove the electrical connection dust cap before wiring. • All threaded parts must be treated with waterproofing sealant. (A non-hardening silicone group sealant is recommended.) • To prevent noise pickup, do not pass signal and power cables through the same ducts.
6-2 <6. Wiring> 6.3.4 Check Meter Connection (1) General-use Type and Flameproof Type Available only when /AL is not specified. Hazardous Location Connect the check meter to the CHECK + and – terminals. (Use hooks.) Transmitter terminal box Distributor (Power supply unit) PULSE • A 4 to 20 mA DC output signal from the CHECK + and – terminals. Nonhazardous Location SUPP LY CHECKM ALAR Receiver instrument (Note) Use a check meter whose internal resistance is 10 Ω or less.
6-3 <6. Wiring> (2) Flameproof Type 6.5 Wire cables through a flameproof packing adapter, or use a flameproof metal conduit. Grounding is always required for the proper operation of transmitters. Follow the domestic electrical requirements as regulated in each country. For a transmitter with a built-in lightning protector, grounding should satisfy ground resistance of 10Ω or less. Wiring cable through flameproof packing adapter.
7-1 <7. Operation> 7. Operation 7.1 Preparation for Starting Operation Confirming that Transmitter is Operating Properly The Model EJ115 low flow transmitter measures the flow rates of liquids and gases. This section describes the operation procedure for the EJ115 as shown in Figure 7.1 (vertical impulse piping type, high-pressure connection: right side) when measuring a liquid flow rate. (a) Follow the procedures below to introduce process pressure into the transmitter.
7-2 <7. Operation> Verify and Change Transmitter Parameter Setting and Values Adjusting Zero Point for Differential Pressure Transmitters The parameters related to the following items are set at factory as specified in order. • Calibration range • Integral indicator display • Output mode • Software damping (optional) Before adjusting zero point, make sure that the equalizing valve is open. Other parameters like following are shipped with the default setting.
IMPORTANT • Remove the BT200 from the terminal box, and confirm that none of the terminal screws are loose. • Close the terminal box cover and the amplifier cover. Screw each cover in tightly until it will not turn further. • There are two covers that must be locked on the ATEX Flameproof type transmitters. An Allen head bolts (shrouding bolts) are provided under edge of the each cover for locking.
7-4 <7. Operation> 7.5.2 Example of Calculation Reynolds Number Calculation Re = 354 W D.µ Fluid: Flow range: N2 gas (Nitrogen gas) 0 to 25 Nm3/h (flow rate at 0°C, 1 atm) Normal flow rate: 18 Nm3/h Specific density: 1.251 kg/Nm3 (specific density at 0°C, 1 atm) Temperature: 30°C Pressure: 100 kPa Viscosity: 0.
7-5 <7. Operation> 0.5 1 5 10 50 100 500 1000 200 200 100 100 50 50 Differential Pressure (kPa) 0.508 0.864 1.511 2.527 4.039 6.350 10 10 5 5 1 0.5 1 5 10 50 100 500 1 1000 Equivalent air flow(liter/min at 0°C, 1 atm) F0706.ai Figure 7.5.2 Relationship between Equivalent Air Flow and Differential Pressure 1.00 0.95 Correction Factor (Kaf/Ka) 0.90 E F D C 0.85 A: F9340NL (Ø0.508) B: F9340NM (Ø0.864) C: F9340NN (Ø1.511) D: F9340NP (Ø2.527) E: F9340NQ (Ø4.
7.6 <7. Operation> Venting or Draining Transmitter Pressuredetector Section 7-6 7.6.2 Venting Gas Since this transmitter is designed to be selfdraining and self-venting with vertical impulse piping connections, neither draining nor venting will be required if the impulse piping is configured appropriately for self-draining or self-venting operation. 1) Gradually open the vent screw to vent gas from the transmitter pressure-detector section. (See Figure 7.6.2.
[Example] Rerange LRV to 0 and URV to 3 MPa. 1) Connect the transmitter and apparatus as shown in Figure 8.1 and warm it up for at least five minutes. 2) Press the range-setting push-button. The integral indicator then displays “LRV.SET.” 3) Apply a pressure of 0 kPa (atmospheric pressure) to the transmitter. (Note 1) 4) Turn the external zero-adjustment screw in the desired direction. The integral indicator displays the output signal in %.
8. 8.1 Maintenance Overview 8.3 WARNING Use the procedure below to check instrument operation and accuracy during periodic maintenance or troubleshooting. Since the accumulated process fluid may be toxic or otherwise harmful, take appropriate care to avoid contact with the body or inhalation of vapors when draining condensate or venting gas from the transmitter pressure-detector section and even after dismounting the instrument from the process line for maintenance.
Table 8.1 Name Power supply Load resistor Voltmeter Digital manometer Pressure generator Pressure source 8-2 <8. Maintenance> Instruments Required for Calibration Yokogawa-recommended Instrument 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 MT220 precision digital manometer 1) For 10 kPa class Accuracy: ±(0.015% of rdg + 0.015% of F.S.) .
8.4 Disassembly and Reassembly 8.4.1 Replacing the Integral Indicator This section describes procedures for disassembly and reassembly for maintenance and component replacement. Always turn OFF power and shut off and release pressures before disassembly. Use proper tools for all operations. Table 8.2 shows the tools required. Table 8.2 8-3 <8.
8.4.2 Replacing the CPU Board Assembly This subsection describes the procedure for replacing the CPU assembly. (See figure 8.3) ■ 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) as shown in figure 8.3. 3) Disconnect the output terminal cable (cable with brown connector at the end).
IMPORTANT Exercise care as follows when cleaning the manifold assembly. • Handle the manifold assembly with care, and be careful not to damage the inner part of the manifold, spacer, and orifice. Be especially careful not to damage or distort the orifice edge (orifice bore). • Do not use a chlorinated or acidic solution for cleaning. • Rinse thoroughly with clean water after cleaning. Spacer NOTE Exercise care as follows when reassembling the manifold assembly. (See Figure 8.5.
■ Removing the Capsule Assembly IMPORTANT Exercise care as follows when cleaning the capsule assembly. • Handle the capsule assembly with care, and be especially careful not to damage or distort the diaphragms that contact the process fluid. • Do not use a chlorinated or acidic solution for cleaning. • Rinse thoroughly with clean water after cleaning. 1) Remove the CPU assembly as shown in subsection 8.4.2. 2) Remove the two setscrews that connect the transmitter section and pressure-detector section.
8.5.2 Troubleshooting Flowcharts : Areas where self-diagnostic offers support Abnormalities appear in measurement. YES The following sorts of symptoms indicate that transmitter may not be operating properly. Example : • There is no output signal. • Output signal does not change even though process variable is known to be varying. • Output value is inconsistent with value inferred for process variable. Is process variable itself abnormal? NO Inspect the process system.
8-8 <8. Maintenance> Large output error. Output travels beyond 0% or 100%. Connect a communicator and check self-diagnostics. Does the selfdiagnostic indicate problem location? NO NO NO YES YES NO Refer to Subsection 5.1.1 and install the transmitter as appropriate for the flow direction of fluid. YES NO Refer to individual model user manuals and connect piping as appropriate for the measurement purpose. NO Refer to Section 6.6 for rated voltage and load resistance.
8-9 <8. Maintenance> 8.5.3 Alarms and Countermeasures Table 8.1 Indicator None AL. 01 CAP. ERR AL. 02 AMP. ERR AL. 10 PRESS AL. 11 ST. PRSS AL. 12 CAP. TMP AL. 13 AMP. TMP AL. 30 RANGE AL. 31 SP. RNG AL. 35 *1 P. HI AL. 36 *1 P. LO AL. 37 *1 SP. HI AL. 38 *1 SP. LO AL. 39 *1 TMP. HI AL. 40 *1 TMP. LO AL. 50 P. LRV AL. 51 P. URV AL. 52 P. SPN AL. 53 P. ADJ AL. 54 SP. RNG AL. 55 SP. ADJ AL. 60 SC. CFG AL. 79 OV. DISP Alarm Message Summary Cause Sensor problem. Capsule temperature sensor problem.
9. 9-1 <9. General Specifications> General Specifications 9.1 Standard Specifications Refer to IM 01C25T02-01E for FOUNDATION Fieldbus communication type and IM 01C25T0401EN for PROFIBUS PA communication type for the items marked with “◊”. Performance Specifications See General Specifications sheet, GS 01C25K0101EN or GS 01C31K01-01EN.
Working Pressure Limits (Silicone oil) Maximum Pressure Limits All capsules 16 MPa (2300 psi) Minimum Pressure Limit See graph below Atmospheric pressure 100(14.5) Working pressure kPa abs (psi abs) Communication Requirements “◊” (Safety approvals may affect electrical requirements.) 2.7(0.38) 1(0.14) -40 (-40) 0 (32) 40 (104) 80 (176) BRAIN 120 (248) Process temperature °C (°F) F0901.
<9.
9.2 9-4 <9. General Specifications> Model and Suffix Codes Model EJX115A EJA115E Output signal Suffix Codes Description ...................... Low flow transmitter -D . . . . . . . . . . . . . . . . . . . . . -E . . . . . . . . . . . . . . . . . . . . . -J . . . . . . . . . . . . . . . . . . . . . -F . . . . . . . . . . . . . . . . . . . . .
9.3 <9. General Specifications> 9-5 Optional Specifications Item Factory Mutual (FM) Description FM Explosionproof *1 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) FM Intrinsically safe *1*2 Intrinsically Safe for Class I, Division 1, Groups A, B, C and D, Class II, Division 1,Groups E, F and G and Class III, Division 1 Hazardous Locations.
Item Lightning protector Status output *4 Oil-prohibited use Oil-prohibited use with dehydrating treatment Capsule fill fluid Calibration units *5 Gold-plated diaphragm Long vent *6 Output limits and failure operation *7 Stainless steel tag plate Data configuration at factory *8 Advanced diagnostics *14 Material certificate *13 Pressure test/ Leak test certificate *12 9-6 <9. General Specifications> Description Transmitter power supply voltage: 10.5 to 32 V DC (10.
9.4 9-7 <9. General Specifications> Dimensions [Measurement span code M and H] Unit: mm (approx. inch) ● Vertical Impulse Piping Type Process connector downside (Installation code 7) Process connector upside (Installation code 6) bolt*3 High pressure side 95(3.74) 52 (2.05) 63 (2.48) Vent/Drain plugs 67 (2.64) 95(3.74) 89(3.50) 110(4.33) 12 (0.47) 39 (1.54) ø78(3.07) 178 (7.01) Electrical connection for code 5, 9, A, and D. Vent plug Ground terminal 124 (4.
9-8 <9. General Specifications> [Measurement span code F] Unit: mm (approx. inch) ● Vertical Impulse Piping Type Process connector downside (Installation code 7) 6(0.24) Process connector upside (Installation code 6) 54 (2.13) 256(10.08) 194(7.64) 143(5.63) 97 (3.82) Manifold 52 (2.05) 39 95(3.74) 102(4.02) 46 (1.81) 242(9.53) 64(2.53) Conduit connection High pressure Integral indicator side (optional) Zero adjustment Vent/Drain plugs ø70(2.76) (1.54) 156(6.14)*2 9*3 (0.35) ø78(3.
i Revision Information Title : Low Flow Transmitter EJX115A and EJA115E Manual No. : IM 01C25K01-01E Edition 1st 2nd Date July 2008 Aug. 2009 3rd Apr. 2010 4th Mar. 2012 5th June 2012 Page — 2-1 2-12 9-3 9-5 2-1 2-4 to 2-11 9-3 9-5 9-7 2-3 9-3 9-4 — 1-1 2.3 to 2.12 2-7 to 2-10 8-6 9.1 to end 6th June 2013 — 2-3 2-6, 2-7 2-8 to 2-11 9-4 9-5 9-7 to 9-8 Revised Item New publication 2.1 • Replace a name plate. 2.10 • Revise standards. 2.11 • Revise information of PED. 9.
