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IM 01C21C01-01E

9-2

9.  MAINTENANCE

Table 9.2.1 Instruments Required for Calibration

Name

Remarks

Yokogawa-recommended Instrument

Power

supply

Model SDBT or SDBS distributor

Load

resistor

Model 2792 standard resistor [250 

1

±

0.005%, 3 W]

Load adjustment resistor [100 

1

±

1%, 1 W]

Voltmeter

Model 2501 A digital multimeter
    Accuracy (10V DC range): 

±

(0.002% of rdg + 1 dgt)

Digital

manometer

Model MT220 precision digital manometer
1) For 10 kPa class

Accuracy: 

±

(0.015% of rdg + 0.015% of F.S.)

±

(0.2% of rdg + 0.1% of F.S.)

2) For 130 kPa class

Accuracy: 

±

0.02% of rdg

±

5digits

±

(0.2% of rdg + 0.1% of F.S.)

3) For 700 kPa class

Accuracy: 

±

(0.02% of rdg + 3digits)

±

5 digits

±

(0.2% of rdg + 0.1% of F.S.) 

4) For 3000 kPa class

Accuracy: 

±

(0.02% of rdg + 10 digits)

±

(0.2% of rdg + 0.1% of F.S.) 

5) For 130 kPa abs  class

Accuracy: 

±

(0.03% of rdg + 6 digits) 

4 to 20 mA DC signal

Select a manometer having 
a pressure range close to 
that of the transmitter.

Pressure
generator

Model 7674 pneumatic pressure standard for 200 kPa {2 kgf/cm

2

}, 25 kPa {2500 mmH

2

O}

Accuracy: 

±

0.05% of F.S. 

Requires air pressure 
supply.

Pressure

source

Model 6919 pressure regulator (pressure pump)

Pressure range: 0 to 133 kPa {1000 mmHg}

Prepare the vacuum pump 
for negative pressure 
ranges.

Dead weight gauge tester 25 kPa {2500mmH

2

O}

    Accuracy: 

±

0.03% of setting

Select the one having a 
pressure range close to 
that of the transmitter.

T0901.EPS

for 0 to 10 kPa
for -10 to 0 kPa

for 25 to 130 kPa
for 0 to 25 kPa
for -80 to 0 kPa

for 100 to 700 kPa
for 0 to 100 kPa
for -80 to 0 kPa

for 0 to 3000 kPa
for -80 to 0 kPa

for 0 to 130 kPa abs

. . . . .

  . . . . . . . . .

  . . . . . . . . . . . . . . . . . . . . . .

  . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . .

  . . . . . . . . . . . . .

  . . . . . . . . . . . . . . . . . . . . . . . . .

  . . . . . . . . .

  . . . . . . . . . . .

. . . . . . . . .

  . . . . . . . . . . . .

Note: The above table contains the instruments capable of performing calibration to the 0.2% level. Since special maintenance and management

procedures involving traceability of each instrument to higher-level standards are required for calibration to the 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.

F0901.EPS

Terminal box

Load resistance, 250

1

Rc

R

Load adjusting
resistance, 100

1

Digital voltmeter

Power

supply

E

(Note)

(Note)

For Model EJA220A transmitter
(diaphragm-extended type), prepare a
mating calibration flange to match
the diaphragm extension length and
outer diameter.

Mating
calibration
flange

V

P

P

Model MT220 
precision
digital manometer

Model 7674 pneumatic
pressure standards

Supply pressure

Pressure source

Reference pressure

Figure 9.3.1 Instrument Connections

Summary of Contents for Dpharp vigilantplant EJA210A

Page 1: ...User s Manual Y okogawa Electric Corporation Model EJA210A and EJA220A Flange Mounted Differential Pressure Transmitters IM 01C21C01 01E IM 01C21C01 01E 10th Edition...

Page 2: ...2 5 2 9 3 IECEx Certification 2 6 2 9 4 CENELEC ATEX KEMA Certification 2 8 2 10 EMC Conformity Standards 2 10 2 11 PED Pressure Equipment Directive 2 10 2 12 Low Voltage Directive 2 11 3 COMPONENT NA...

Page 3: ...N TERMINAL BT200 OPERATION 8 1 8 1 BT200 Operation Precautions 8 1 8 1 1 Connecting the BT200 8 1 8 1 2 Conditions of Communication Line 8 1 8 2 BT200 Operating Procedures 8 1 8 2 1 Key Layout and Scr...

Page 4: ...ration 9 1 9 4 Disassembly and Reassembly 9 3 9 4 1 Replacing the Integral Indicator 9 3 9 4 2 Replacing the CPU Board Assembly 9 4 9 4 3 Replacing the Process Connector Gasket 9 5 9 5 Troubleshooting...

Page 5: ...a 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 responsi bility for any such...

Page 6: ...stricted to those who have received appropriate training in the device Take care not to create sparks when accessing the instrument or peripheral devices in a hazardous location f Modification Yokogaw...

Page 7: ...rans Neem indien u aanwijzingen op het gebied van explosiebeveiliging nodig hebt in uw eigen taal contact op met de dichtstbijzijnde vestiging van Yokogawa of met een vertegenwoordiger SF Kaikkien ATE...

Page 8: ...1 4 1 INTRODUCTION IM 01C21C01 01E LT LV PL EST SLO H BG RO M CZ SK...

Page 9: ...for a long period a 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 humi...

Page 10: ...tance 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 2 8 Insulation Resistance and D...

Page 11: ...truction of the instrument installation external wiring maintenance or repair is strictly restricted and non observance or negligence of this restriction would result in dangerous condition WARNING To...

Page 12: ...b FM Explosionproof Type Caution for FM explosionproof type Note 1 Model EJA Series differential gauge and absolute pressure transmitters with optional code FF1 are applicable for use in hazardous loc...

Page 13: ...Code Part I and Local Electrical Codes The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation and Yokogawa Corporation of America is...

Page 14: ...ECEx Certification Model EJA Series differential gauge and absolute pressure transmitters with optional code SU2 can be selected the type of protection IECEx Intrinsically Safe type n or flameproof fo...

Page 15: ...ly Hazardous Location Nonhazardous Location Not Use Safety Barrier type n IECEx Certified Equipment nL Group IIC Zone 2 b IECEx Flameproof Type Caution for IECEx flameproof type Note 1 Model EJA Serie...

Page 16: ...ed such that even in the event of rare incidents ignition sources due to impact and friction sparks are excluded Transmitter Supply Safety Barrier 1 Nonhazardous Location Installation Diagram Hazardou...

Page 17: ...ctive internal capacitance Ci 22 5 nF Effective internal inductance Li 730 H Note 2 Installation All wiring shall comply with local installation requirements refer to the installation diagram Note 3 M...

Page 18: ...MODE Specified output mode NO Serial number and year of production 1 TOKYO 180 8750 JAPAN The manufacturer name and the ad dress 2 1 The third figure from the last shows the last one figure of the yea...

Page 19: ...X II of EC Directive on Pressure Equipment Directive 97 23 EC T0299 EPS 3 Operation CAUTION The temperature and pressure of fluid should be applied under the normal operating condi tion The ambient te...

Page 20: ...Setting pin CN4 Note 1 See Subsection 10 2 Model and Suffix Codes for details Note 2 Insert the pin CN4 as shown in the figure above to set the burn out direction The pin is set to the H side for del...

Page 21: ...asket stud bolts and nuts Gasket Stud bolt Nut F0401 EPS Figure 4 1 Transmitter Mounting IMPORTANT Please use a gasket which has a bigger inside diameter than that of gasket facing d on diaphragm seal...

Page 22: ...ows 1 Position the diaphragm so that the diaphragm is in a upward position 2 Pour the fluorinated oil on the diaphragm and gasket area covering it completely and evenly Be careful not to scratch the d...

Page 23: ...pressure connection Process connector Bolt F0501 EPS Figure 5 1 H and L Symbols on a Capsule Assembly 2 Tightening the Process Connector Mount ing Bolts After connecting the impulse piping tighten th...

Page 24: ...ransmitter 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 co...

Page 25: ...sulated wire JIS C3307 or equivalent b Use shielded wires in areas that are susceptible to electrical noise c In areas with higher or lower ambient temperatures use appropriate wires or cables d In en...

Page 26: ...e Hazardous Location Nonhazardous Location Transmitter terminal box Distributor Power supply unit Receiver instrument F0605 EPS Figure 6 4 1a Connection between Transmitter and Distributor 2 Intrinsic...

Page 27: ...rdening sealant to the threads of these fittings for waterproofing After wiring impregnate the fitting with a compound to seal tubing Figure 6 4 2c Typical Wiring Using Flameproof Metal Conduit 6 5 Gr...

Page 28: ...ank F0701 EPS Figure 7 1 Liquid Level Measurement Confirming that Transmitter is Operating Properly Using the BT200 If the wiring system is faulty communication error appears on the display If the tra...

Page 29: ...n obtain Low Range Value from actual measured value of 0 0 kPa atmospheric pres sure Using the Transmitter Zero adjustment Screw Before adjusting a screw check that the parameter J20 EXT ZERO ADJ disp...

Page 30: ...from the terminal box and confirm that none of the terminal screws are loosened Close the terminal box cover and the amplifier cover Screw each cover in tightly until it will not turn further Two cov...

Page 31: ...ple Rerange LRV to 0 and HRV to 3 MPa 1 Connect the transmitter and apparatus as shown in Figure 9 3 1 and warm up for at least five minutes 2 Press the range setting push button The integral indicato...

Page 32: ...V automatically changes HRV to the following value HRV previous HRV new LRV previous LRV If the range setting push button and external zero adjustment screw are not touched during a range change opera...

Page 33: ...r Control room Terminal board F0801 EPS Figure 8 1 1 Connecting the BT200 8 1 2 Conditions of Communication Line DPharp BT200 Cable resistance Rc Cable resistance Rc Load resistance R cc Power supply...

Page 34: ...ion key F1 CODE to enter symbols The following symbols will appear in sequence one at a time at the cursor each time you press F1 CODE To enter characters next to these symbols press to move the curso...

Page 35: ...age of messages Japanese or English 4 LCD contrast setting 5 Adjusting printout tone BT200 P00 only FUNC 1 MENU 2 UPLOAD TO BT200 3 DOWNLOAD TO INST 4 PRINT ALL DATA HOME SET ADJ ESC MENU A DISPLAY B...

Page 36: ...and ZERO ADJ OVER Self diagnostic messages A60 SELF CHECK Maximum static pressure 4 B40 Same as A60 MAX STAT P Self diagnostic messages B60 SELF CHECK Setting data C 16 alphanumerics Menu name SETTING...

Page 37: ...ror Two time before ERROR REC 3 Menu name Tests K TEST 5 to 110 0 3 Displays ACTIVE while executing Test output setting K10 OUTPUT in Same as A60 Self diagnostic messages K60 SELF CHECK Menu name Memo...

Page 38: ...ale setting unit BT200 only display value at 4 mA DC LRV and display value at 20 mA DC HRV Note LRV and HRV can be specified with range value specifications up to 5 digits excluding any decimal point...

Page 39: ...YOKOGAWA CODE CAPS CLR ESC When you have made an entry mistake return the cursor using the key then reenter Set the new TAG NO FIC 1a FOKOGAWA FIKOGAWA FICOGAWA FIC GAWA FIC 1AWA FIC 1aWA FIC 1a Set T...

Page 40: ...up to 5 digits excluding any decimal point for low or high range limits within the range of 32000 to 32000 Example 2 With present settings of 0 to 30 kPa set the Higher range value to10 kPa FEED NO O...

Page 41: ...MODE setting panel is displayed 5 Integral Indicator Scale Setup The following 5 displays are available for integral indicators T0808 EPS D20 DISP SELECT and Display NORMAL USER SET USER INP PRES PRES...

Page 42: ...ues of integral indication and A11 ENGR OUTPUT parameter are indicated Example Set the integral indicator scale to engineering units display The disappears from the integral indicator display ESC SET...

Page 43: ...ge this setting Note that changing the unit here changes the unit for A20 AMP TEMP amplifier temperature and A21 CAPSULE TEMP capsule temperature Example Change the unit for the temperature display ES...

Page 44: ...E FAULT of Er 01 or AMP MODULE FAULT of Er 02 which are shown in 8 5 2 Errors and Countermeasures Example Set the output status to LOW when a hardware error occurs ESC SET D53 ERROR OUT HIGH HIGH LOW...

Page 45: ...s zero adjustment without using the BT200 Accurately adjust the output current to 4 mA DC or other target output value using an ammeter that accuratly reads output currents Adjust output to the refere...

Page 46: ...key to select INHIBIT Press the key twice to enter the setting F0833 EPS Zero point adjustment using external zero adjustment screw on the transmitter Turn the zero adjustment screw on the outside of...

Page 47: ...s In addition the display can be updated to the present data value at any time by pressing the DATA key For parameters associated with the display of measured data see Subsection 8 3 1 Parameter Summa...

Page 48: ...r errors can be stored When the 5th error has occurred it is stored in P10 The error stored in P13 will be deleted and then the error in P12 will be copied to P13 In this sequence the history of the m...

Page 49: ...an error is detected in the self diagnostic an error number is displayed on the integral indica tor If there is more than one error the error number changes at two second intervals See Table 8 5 1 reg...

Page 50: ...y before error occurrence Holds output immediately before error occurrence Holds output immediately before error occurrence Displays present output Outputs the signal Hold High or Low set with paramet...

Page 51: ...ng 9 2 Calibration Instruments Se lection Table 9 2 1 shows the instruments required for calibra tion Select instruments that will enable the transmitter to be calibrated or adjusted to the required a...

Page 52: ...vacuum pump for negative pressure ranges Dead weight gauge tester 25 kPa 2500mmH2O Accuracy 0 03 of setting Select the one having a pressure range close to that of the transmitter T0901 EPS for 0 to...

Page 53: ...a shrouding bolt is driven clockwise by an Allen wrench it is going in and cover lock is released and then the cover can be opened When a cover is closed it should be locked by a shrouding bolt witho...

Page 54: ...t is horizontal as shown in Figure 9 4 2 3 Disconnect the output terminal cable cable with brown connector at the end When doing this lightly press the side of the CPU assembly connec tor and pull the...

Page 55: ...dy the problem Since some problems have complex causes these flow charts may not identify all If you have difficulty isolating or correcting a problem contact Yokogawa service personnel 9 5 1 Basic Tr...

Page 56: ...re detector section etc Fully open the low pressure valve Refer to Section 6 6 for rated voltage and load resistance Find correct broken conductor or wiring error Are valves opened or closed correctly...

Page 57: ...llow adequate ventilation Refer to Section 9 2 when selecting instruments for calibration Fully open the low pressure valve Refer to individual model user manuals and connect piping as appropriate for...

Page 58: ...able for Output signal code D and E Damping Time Constant 1st order The sum of the amplifier and capsule damping time constant must be used for the overall time constant Amp damping time constant is a...

Page 59: ...0 immersion proof Cover O rings Buna N Data plate and tag SUS304 Fill Fluid Silicone or Fluorinated oil optional Weight EJA210A with 150 flange 11 kg 25 lb EJA220A with 150 flange 16 kg 35 lb Connecti...

Page 60: ...tor with 1 2NPT female process connector without process connector 1 4 NPT female on the cover flange SCM435 SUS630 SUH660 Horizontal impulse piping type left side high pressure G1 2 female one electr...

Page 61: ...ctor Rc1 4 female on the cover flanges with Rc1 4 female process connector with Rc1 2 female process connector with 1 4 NPT female process connector with 1 2 NPT female process connector without proce...

Page 62: ...V Imax 165 mA Pmax 0 9 W Ci 22 5 nF Li 730 H Groups C D E F and G Vmax 30 V Imax 225 mA Pmax 0 9 W Ci 22 5 nF Li 730 H FS1 CENELEC ATEX KEMA Flameproof Approval 2 Certificate KEMA 02ATEX2148 II 2G EE...

Page 63: ...y Barrier Encl Type 4x Temp Class T4 Amb Temp 40 to 60 C 40 to 140 F Vmax 30 V Imax 165 mA Pmax 0 9 W Ci 22 5 nF Li 730 H CS1 IECEx Scheme SU2 IECEx Intrinsically safe type n and Flameproof Approval 2...

Page 64: ...cess flange Block Pipe Base Low pressure side Cover flange High pressure side Process flange Block Pipe Base Low pressure side Cover flange Process connector M13 M04 M14 Flange rating JIS 10K JIS 20K...

Page 65: ...0 6 30 D 185 7 28 200 7 87 190 5 7 50 209 6 8 25 190 7 48 210 8 27 200 7 87 200 7 87 d 90 3 54 90 3 54 90 3 54 90 3 54 90 3 54 90 3 54 90 3 54 90 3 54 g 130 5 12 130 5 12 130 5 12 130 5 12 130 5 12 13...

Page 66: ...00 254 10 00 229 9 02 254 10 00 220 8 66 235 9 25 Diaphragm Extension Length Code 2 4 6 X2 1 97 inch 50 mm 3 94 inch 100 mm 5 91 inch 150 mm A 96 3 78 96 3 78 96 3 78 96 3 78 96 3 78 96 3 78 96 3 78 9...

Page 67: ...ptional code F1 For HART protocol version with write protection switch Optional code F1 For FOUNDATION Fieldbus protocol version For FOUNDATION Fieldbus protocol version with PID LM function Optional...

Page 68: ...Stainless Steel SUH660 Stainless Steel Vent Plug SUS316 Stainless Steel R 1 4 1 4 NPT Vent Screw SUS316 Stainless Steel Drain Plug SUS316 Stainless Steel Note 1 R 1 4 1 4 NPT Vent Plug degreased SUS3...

Page 69: ...5 and M20 2 8 8 4 CMPL Revised a book in a new format The location of contents and the associated page numbers may not coincide with the one in old editions 2 10 8 3 1 CMPL 1C21A1 02E 3rd 4th CMPL 1C...

Page 70: ...3 Add e Explosion Protected Type Instrument and f Modification Add 1 3 ATEX Document Add IECEx Certification and delete SAA Certification Add Low Voltage Directive Add Certificate numbers and Applica...

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