Yokogawa EJA115 User Manual

User’s Manual

Model EJA115 Low Flow Transmitter

[Style: S3]

IM 01C22K01-01E

Yokogawa Electric Corporation

IM 01C22K01-01E

17th Edition

CONTENTS

1. INTRODUCTION............................................................................................ 1-1

Regarding This Manual ................................................................................. 1-1

1.1 For Safe Use of Product........................................................................ 1-1

1.2 Warranty ................................................................................................ 1-2

1.3 ATEX Documentation ............................................................................ 1-3

2. HANDLING CAUTIONS ................................................................................ 2-1

2.1 Model and Specifications Check ......................................................... 2-1

2.2 Unpacking ........................................................................................... 2-1

2.3 Storage ................................................................................................ 2-1

2.4 Selecting the Installation Location ...................................................... 2-2

2.5 Pressure Connection ........................................................................... 2-2

2.6 Waterproofing of Cable Conduit Connections .................................... 2-2

2.7 Restrictions on Use of Radio Transceiver .......................................... 2-2

2.8 Insulation Resistance and Dielectric Strength Test ............................ 2-2

2.9 Installation of Explosion Protected Type ............................................ 2-3

2.9.1 FM Approval ................................................................................. 2-3

2.9.2 CSA Certification .......................................................................... 2-5

2.9.3 IECEx Certification ....................................................................... 2-6

2.9.4 CENELEC ATEX (KEMA) Certification ........................................ 2-8

2.9.5 TIIS Certification ......................................................................... 2-10

2.10 EMC Conformity Standards .............................................................. 2-12

2.11 PED (Pressure Equipment Directive) ............................................... 2-12

2.12 Low Voltage Directive ....................................................................... 2-12

3. COMPONENT NAMES.................................................................................. 3-1

4. INSTALLATION ............................................................................................. 4-1

4.1 Precautions ......................................................................................... 4-1

4.2 Mounting .............................................................................................. 4-1

4.3 Rotating Transmitter Section .............................................................. 4-2

4.4 Changing the Direction of Integral Indicator ....................................... 4-3

5. INSTALLING IMPULSE PIPING ................................................................... 5-1

5.1 Process Piping Installation Precautions.............................................. 5-1

5.1.1 Connecting Process Piping to the Transmitter ............................ 5-1

5.1.2 Routing the Process Piping.......................................................... 5-1

5.2 Process Piping Connection Examples ................................................ 5-2

6. WIRING .......................................................................................................... 6-1

6.1 Wiring Precautions .............................................................................. 6-1

6.2 Selecting the Wiring Materials ............................................................ 6-1

6.3 Connections of External Wiring to Terminal Box................................ 6-1

6.3.1 Power Supply Wiring Connection ................................................ 6-1

6.3.2 External Indicator Connection ...................................................... 6-1

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CONTENTS

6.3.3 BRAIN TERMINAL BT200 Connection ........................................ 6-2

6.3.4 Check Meter Connection.............................................................. 6-2

6.4 Wiring .................................................................................................. 6-2

6.4.1 Loop Configuration ....................................................................... 6-2

(1) General-use Type and Flameproof Type ..................................... 6-2

(2) Intrinsically Safe Type ................................................................. 6-2

6.4.2 Wiring Installation ......................................................................... 6-3

(1) General-use Type and Intrinsically Safe Type ............................. 6-3

(2) Flameproof Type (TIIS) ............................................................... 6-3

6.5 Grounding............................................................................................ 6-4

6.6 Power Supply Voltage and Load Resistance ..................................... 6-4

7. OPERATION .................................................................................................. 7-1

7.1 Preparation for Starting Operation ...................................................... 7-1

7.2 Zero Point Adjustment ........................................................................ 7-2

7.3 Starting Operation ............................................................................... 7-3

7.4 Shutting Down Operation .................................................................... 7-3

7.5 Transmitter Measurement Range ....................................................... 7-3

7.5.1 Determining the Differential Pressure Range .............................. 7-3

7.5.2 Example of Calculation ................................................................ 7-4

7.6 Venting or Draining Transmitter Pressure-detector Section ............... 7-7

7.6.1 Draining Condensate.................................................................... 7-7

7.6.2 Venting Gas.................................................................................. 7-7

7.7 Setting the Range Using the Range-setting Switch ........................... 7-7

8. BRAIN 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 Screen Display................................................... 8-1

8.2.2 Operating Key Functions.............................................................. 8-2

(1) Alphanumeric Keys and Shift Keys ............................................. 8-2

(2) Function Keys ............................................................................. 8-2

8.2.3 Calling Up Menu Addresses Using the Operating Keys.............. 8-3

8.3 Setting Parameters Using the BT200 ................................................. 8-4

8.3.1 Parameter Summary .................................................................... 8-4

8.3.2 Parameter Usage and Selection .................................................. 8-6

8.3.3 Setting Parameters....................................................................... 8-7

(1) Tag No. Setup.............................................................................. 8-7

(2) Calibration Range Setup ............................................................. 8-7

(3) Damping Time Constant Setup ................................................... 8-8

(4) Output Mode and Integral Indicator Display Mode Setup ........... 8-9

(5) Output Signal Low Cut Mode Setup ............................................ 8-9

(6) Change Output Limits ................................................................. 8-9

(7) Integral Indicator Scale Setup ................................................... 8-10

(8) Unit Setup for Displayed Temperature ...................................... 8-11

(9) Unit Setup for Displayed Static Pressure .................................. 8-12

(10) Operation Mode Setup .............................................................. 8-12

(11) Output Status Display/Setup when a CPU Failure.................... 8-12

(12) Output Status Setup when a Hardware Error Occurs ............... 8-12

(13) Range Change while Applying Actual Inputs ............................ 8-13

(14) Zero Point Adjustment............................................................... 8-13

(15) Span Adjustment ....................................................................... 8-14

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CONTENTS

(16) Test Output Setup ..................................................................... 8-15

(17) User Memo Fields ..................................................................... 8-15

8.4 Displaying Data Using the BT200..................................................... 8-16

8.4.1 Displaying Measured Data ......................................................... 8-16

8.4.2 Display Transmitter Model and Specifications ........................... 8-16

8.5 Self-Diagnostics ................................................................................ 8-16

8.5.1 Checking for Problems ............................................................... 8-16

(1) Identifying Problems with BT200 .............................................. 8-16

(2) Checking with Integral Indicator ................................................ 8-17

8.5.2 Errors and Countermeasures ..................................................... 8-18

9. MAINTENANCE............................................................................................. 9-1

9.1 Overview ............................................................................................. 9-1

9.2 Calibration Instruments Selection ....................................................... 9-1

9.3 Calibration ........................................................................................... 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 Gaskets ................................. 9-4

9.4.4 Cleaning Manifold Assembly and Replacing Orifice .................... 9-5

9.4.5 Cleaning and Replacing the Capsule Assembly.......................... 9-6

9.5 Troubleshooting................................................................................... 9-7

9.5.1 Basic Troubleshooting .................................................................. 9-7

9.5.2 Troubleshooting Flow Charts ....................................................... 9-7

10. GENERAL SPECIFICATIONS .................................................................... 10-1

10.1 Standard Specifications .................................................................... 10-1

10.2 Model and Suffix Codes.................................................................... 10-3

10.3 Optional Specifications ...................................................................... 10-4

10.4 Dimensions ........................................................................................ 10-7

NSTALLATION AND OPERATING PRECAUTIONS FOR

TIIS INTRINSICALLY SAFE EQUIPMENT......................................... EX-A03E

INSTALLATION AND OPERATING PRECAUTIONS FOR

TIIS FLAMEPROOF EQUIPMENT...................................................... EX-B03E

Customer Maintenance Parts List

DPharp EJA Series Transmitter Section ........................CMPL 01C22A01-02E

Model EJA115 Low Flow Transmitter .............................CMPL 01C22K01-01E

REVISION RECORD

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IM 01C22K01-01E

1. INTRODUCTION

Thank you for purchasing the DPharp electronic pressure transmitter.

The DPharp Pressure Transmitters are precisely calibrated at the factory before shipment. To ensure correct and efficient use of the instrument, please read this manual thoroughly and fully understand how to operate the instrument before operating it.

 Regarding This Manual

• This manual should be passed on to the end user.

• The contents of this manual are subject to change without prior notice.

• 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.

• The following safety symbol marks are used in this manual:

WARNING

Indicates a potentially hazardous situation which, if not avoided, 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.

Direct current

could

result in death or serious

• 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.

NOTE

For FOUNDATION FieldbusTM, PROFIBUS PA and HART protocol versions, please refer to IM 01C22T02-01E, IM 01C22T03-00E and IM 01C22T01-01E respectively, in addition to this manual.

1.1 For Safe Use of Product

For the protection and safety of the operator and the instrument or the system including the instrument, please be sure to follow the instructions on safety described in this manual when handling this instrument. In case the instrument is handled in contradiction to these instructions, Yokogawa does not guarantee safety. Please give your attention to the followings.

(a) Installation

• The instrument must be installed by an expert engineer or a skilled personnel. The procedures described about INSTALLATION are not permitted for operators.

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IM 01C22K01-01E

1. INTRODUCTION

• In case of high process temperature, care should be taken not to burn yourself because the surface of body and case reaches a high temperature.

• The instrument installed in the process is under pressure. Never loosen the process connector bolts to avoid the dangerous spouting of process fluid.

• During draining condensate from the pressuredetector 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.

• When removing the instrument from hazardous processes, avoid contact with the fluid and the interior of the meter.

• All installation shall comply with local installation requirement and local electrical code.

(b) Wiring

• The instrument must be installed by an expert engineer or a skilled personnel. The procedures described about WIRING are not permitted for operators.

(f) Modification

• Yokogawa will not be liable for malfunctions or damage resulting from any modification made to this instrument by the customer.

1.2 Warranty

• The warranty shall cover the period noted on the quotation presented to the purchaser at the time of purchase. Problems occurred during the warranty period shall basically be repaired free of charge.

• In case of problems, the customer should contact the Yokogawa representative from which the 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.

•Responsible party for repair cost for the problems shall be determined by Yokogawa based on our investigation.

• Please confirm that voltages between the power supply and the instrument before connecting the power cables and that the cables are not powered before connecting.

•Wait 10 min. after power is turned off, before opening the covers.

(d) Maintenance

• Please do not carry out except being written to a maintenance descriptions. When these procedures are needed, please contact nearest YOKOGAWA office.

• Care should be taken to prevent the build up of drift, dust or other material on the display glass and name plate. In case of its maintenance, soft and dry cloth is used.

(e) Explosion Protected Type Instrument

• Users of explosion proof instruments should refer first to section 2.9 (Installation of an Explosion Protected Instrument) of this manual.

• 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.

- Failure or damage due to improper handling, use or

storage which is out of design conditions.

- 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.

•The use of this instrument is restricted 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.

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IM 01C22K01-01E

1. INTRODUCTION

1.3 ATEX Documentation

This procedure is only applicable to the countries in European Union.

All instruction manuals for ATEX Ex related products are available in English, German and French. Should you require Ex related instructions in your local language, you are to contact your nearest Yokogawa office or representative.

Alle brugervejledninger for produkter relateret til ATEX Ex er tilgængelige på engelsk, tysk og fransk. Skulle De ønske yderligere oplysninger om håndtering af Ex produkter på eget sprog, kan De rette henvendelse herom til den nærmeste Yokogawa afdeling eller forhandler.

Tutti i manuali operativi di prodotti ATEX contrassegnati con Ex sono disponibili in inglese, tedesco e francese. Se si desidera ricevere i manuali operativi di prodotti Ex in lingua locale, mettersi in contatto con l’ufficio Yokogawa più vicino o con un rappresentante.

Todos los manuales de instrucciones para los productos antiexplosivos de ATEX están disponibles en inglés, alemán y francés. Si desea solicitar las instrucciones de estos artículos antiexplosivos en su idioma local, deberá ponerse en contacto con la oficina o el representante de Yokogawa más cercano.

Kaikkien ATEX Ex -tyyppisten tuotteiden käyttöhjeet ovat saatavilla englannin-, saksan- ja ranskankielisinä. Mikäli tarvitsette Ex -tyyppisten tuotteiden ohjeita omalla paikallisella kielellännne, ottakaa yhteyttä lähimpään Yokogawa-toimistoon tai -edustajaan.

Todos os manuais de instruções referentes aos produtos Ex da ATEX estão disponíveis em Inglês, Alemão e Francês. Se necessitar de instruções na sua língua relacionadas com produtos Ex, deverá entrar em contacto com a delegação mais próxima ou com um representante da Yokogawa.

Tous les manuels d’instruction des produits ATEX Ex sont disponibles en langue anglaise, allemande et française. Si vous nécessitez des instructions relatives aux produits Ex dans votre langue, veuillez bien contacter votre représentant Yokogawa le plus proche.

Alle Betriebsanleitungen für ATEX Ex bezogene Produkte stehen in den Sprachen Englisch, Deutsch und Französisch zur Verfügung. Sollten Sie die Betriebsanleitungen für Ex-Produkte in Ihrer Landessprache benötigen, setzen Sie sich bitte mit Ihrem örtlichen Yokogawa-Vertreter in Verbindung.

Alla instruktionsböcker för ATEX Ex (explosionssäkra) produkter är tillgängliga på engelska, tyska och franska. Om Ni behöver instruktioner för dessa explosionssäkra produkter på annat språk, skall Ni kontakta närmaste Yokogawakontor eller representant.

Alle handleidingen voor producten die te maken hebben met ATEX explosiebeveiliging (Ex) zijn verkrijgbaar in het Engels, Duits en Frans. 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.

       ATEX Ex   ,   .        Ex           Yo ko ga w a   .

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IM 01C22K01-01E

1. INTRODUCTION

SLO

EST

1-4

IM 01C22K01-01E

2. HANDLING CAUTIONS

This chapter describes important cautions regarding how to handle the transmitter. Read carefully before using the transmitter.

The EJA Series pressure transmitters are thoroughly tested at the factory before shipment. When the transmitter is delivered, visually check them to make sure that no damage occurred during shipment.

Also check that all transmitter mounting hardware shown in Figure 2.1 is included. If the transmitter was ordered without the mounting bracket, the transmitter mounting hardware is not included. After checking the transmitter, repack it in the way it was delivered until installation.

Mounting bracket

U-bolt nut

(L type)

U-bolt

2.1 Model and Specifications Check

The model name and specifications are indicated on the name plate attached to the case. If the reverse operat- ing mode was ordered (reverse signal), ‘REVERSE’ will be inscribed in field *1; if square root display mode was ordered, ‘SQRT’ is inscribed in field *2.

: Refer to USER'S MANUAL

F0202.EPS

Figure 2.2 Name Plate Example of TIIS Flameproof Type

2.2 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.

2.3 Storage

Transmitter mounting bolt

U-bolt nut

Mounting bracket

(Flat type)

Figure 2.1 Transmitter Mounting Hardware

Transmitter mounting bolt

U-bolt

F0201.EPS

The following precautions must be observed when storing the instrument, especially 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 humidity within the following ranges.

Ambient temperature:

–40 to 85°C without integral indicator –30 to 80°C with integral indicator

Relative humidity:

5% to 100% R.H. (at 40°C)

Preferred temperature and humidity:

approx. 25°C and 65% R.H.

(b) When storing the transmitter, repack it as nearly as

possible to the way it was packed when delivered from the factory.

oughly clean the chambers inside the cover flanges and integral flow orifice unit, so that no measured fluid remains in it. Also make sure before storing that the pressure-detector and transmitter section are securely mounted.

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IM 01C22K01-01E

2. HANDLING CAUTIONS

2.4 Selecting the Installation Location

The transmitter is designed to withstand severe environmental conditions. However, to ensure stable and accurate operation for years, observe the following precautions when selecting an installation location.

(a) Ambient Temperature

Avoid locations subject to wide temperature variations or a significant temperature gradient. If the location is exposed to radiant heat from plant equipments, provide adequate thermal insulation and/or ventilation.

(b) Ambient Atmosphere

Avoid installing the transmitter in a corrosive atmosphere. If the transmitter must be installed in a corrosive atmosphere, there must be adequate ventilation as well as measures to prevent intrusion or stagnation of rain water in conduits.

Select an installation site suffering minimum shock and vibration (although the transmitter is designed to be relatively resistant to shock and vibration).

(d) 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. See Subsection 2.9 “Installation of Explosion Protected Type Transmitters.”

2.5 Pressure Connection

WARNING

• Instrument installed in the process is under pressure. Never loosen the process connector bolts to avoid the dangerous spouting of process fluid.

The following precautions must be observed in order to safely operate the transmitter under pressure.

(a) Make sure that the four manifold bolts are tightened

firmly.

(b) Make sure that there are no leaks in the impulse

piping.

maximum working pressure.

2.6 Waterproofing of Cable Conduit Connections

Apply a non-hardening sealant to the threads to waterproof the transmitter cable conduit connections. (See Figure 6.4.2a, 6.4.2b and 6.4.2d.)

2.7 Restrictions on Use of Radio Transceiver

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.

2.8 Insulation Resistance 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.

(a) 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.

(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.

lines from the transmitter terminals. Perform the tests in the following procedure:

• Insulation Resistance Test

1) Short-circuit the + and – SUPPLY terminals in the

terminal box.

2) Turn OFF the insulation tester. Then connect the

insulation tester plus (+) lead wire to the shorted SUPPLY terminals and the minus (–) leadwire to the grounding terminal.

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2. HANDLING CAUTIONS

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 20 MΩ.

4) After completing the test and being very careful not to touch exposed conductors disconnect the insulation tester and connect a 100 kΩ resistor between the grounding terminal and the shortcircuiting SUPPLY terminals. Leave this resistor connected at least one second to discharge any static potential. Do not touch the terminals while it is discharging.

• Dielectric Strength Test

1) Short-circuit the + and – SUPPLY terminals in the terminal box.

2) Turn OFF the dielectric strength tester. Then connect the tester between the shorted SUPPLY 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 10 mA, 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.

2.9 Installation of Explosion

Protected Type

In this section, further requirements and differences and for explosionproof type instrument are described. For explosionproof type instrument, the description in this chapter is prior to other description in this users manual.

For the intrinsically safe equipment and explosionproof equipment, in case the instrument is not restored to its original condition after any repair or modification undertaken by the customer, intrinsically safe construction or explosionproof construction is damaged and may cause dangerous condition. Please contact Yokogawa for any repair or modification required to the instrument.

NOTE

For FOUNDATION Fieldbus and PROFIBUS PA explosion protected type, please refer to IM 01C22T02-01E and IM 01C22T03-00E respectively.

CAUTION

This instrument is tested and certified as intrinsically safe type or explosionproof type. Please note that the construction 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 preserve 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.

2.9.1 FM Approval

a. FM Intrinsically Safe Type

Caution for FM intrinsically safe type. (Following contents refer “DOC. No. IFM012-A12 P.1 and 2.”)

Note 1. Model EJA Series pressure transmitters

with optional code /FS1 are applicable for use in hazardous locations.

• Applicable Standard: FM3600, FM3610, FM3611, FM3810, ANSI/NEMA250

• Intrinsically Safe for Class I, Division 1, Groups A, B, C & D. Class II, Division 1, Groups E, F & G and Class III, Division 1 Hazardous Locations.

• Nonincendive for Class I, Division 2, Groups A, B, C & D. Class II, Division 2, Groups E, F & G and Class III, Division 1 Hazardous Locations.

• Outdoor hazardous locations, NEMA 4X.

• Temperature Class: T4

• Ambient temperature: –40 to 60°C

Note 2. Entity Parameters

• Intrinsically Safe Apparatus Parameters [Groups A, B, C, D, E, F and G] Vmax = 30 V Ci = 22.5 nF Imax = 165 mA Li = 730 µH Pmax = 0.9 W

* Associated Apparatus Parameters

(FM approved barriers) Voc ≤ 30 V Ca > 22.5 nF Isc ≤ 165 mA La > 730 µH Pmax ≤ 0.9W

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2. HANDLING CAUTIONS

• Intrinsically Safe Apparatus Parameters [Groups C, D, E, F and G] Vmax = 30 V Ci = 22.5 nF Imax = 225 mA Li = 730 µH Pmax = 0.9 W

* Associated Apparatus Parameters

(FM approved barriers) Voc ≤ 30 V Ca > 22.5 nF Isc ≤ 225 mA La > 730 µH Pmax ≤ 0.9 W

• Entity Installation Requirements Vmax ≥ Voc or Vt, Imax ≥ Isc or It, Pmax (IS Apparatus) ≥ Pmax (Barrier) Ca ≥ Ci + Ccable, La ≥ Li + Lcable

Note 3. Installation

• Barrier must be installed in an enclosure that meets the requirements of ANSI/ISA S82.01.

• Control equipment connected to barrier must not use or generate more than 250 V rms or V dc.

• Installation should be in accordance with ANSI/ISA RP12.6 “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.

• Associated apparatus manufacturer’s installation drawing must be followed when installing this apparatus.

• The maximum power delivered from the barrier must not exceed 0.9 W.

• Note a warning label worded “SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY,” and “INSTALL IN ACCORDANCE WITH DOC. No. IFM012-A12 P.1 and 2.”

Note 4. 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.

[Intrinsically Safe]

Hazardous Location Nonhazardous Location

Class I, II, III, Division 1, Groups A, B, C, D, E, F, G

EJA Series Pressure Tr ansmitters Safety Barrier

–

Supply

–

General Purpose Equipment

–

[Nonincendive]

Hazardous Location Nonhazardous Location

Class I, II, Division 2, Groups A, B, C, D, E, F, G Class III, Division 1.

EJA Series Pressure Tr ansmitters

Supply

–

Not Use Safety Barrier

General Purpose Equipment

F0203-2.EPS

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 locations.

• Applicable Standard: FM3600, FM3615, FM3810, ANSI/NEMA250

• Explosionproof for Class I, Division 1, Groups B, C and D.

• Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G.

• Outdoor hazardous locations, NEMA 4X.

• Temperature Class: T6

• Ambient Temperature: –40 to 60°C

• Supply Voltage: 42 V dc max.

• Output signal: 4 to 20 mA

Note 2. Wiring

• All wiring shall comply with National Electrical Code ANSI/NEPA70 and Local Electrical Codes.

• When installed in Division 1, “FACTORY SEALED, CONDUIT SEAL NOT REQUIRED.”

Note 3. Operation

• Keep the “CAUTION” nameplate attached to the transmitter. CAUTION: OPEN CIRCUIT BEFORE REMOVING COVER. FACTORY SEALED, CONDUIT SEAL NOT REQUIRED. INSTALL IN ACCORDANCE WITH THE INSTRUCTION MANUAL IM 1C22.

• Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a 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 Approval.

–

F0203-1.EPS

2-4

IM 01C22K01-01E

2. HANDLING CAUTIONS

c. FM Intrinsically Safe Type/FM

Explosionproof Type

Model EJA Series pressure transmitters with optional code /FU1 can be selected the type of protection (FM Intrinsically Safe or FM Explosionproof) for use in hazardous locations.

Note 1. For the installation of this transmitter,

once a particular type of protection is selected, any other type of protection cannot be used. The installation must be in accordance with the description about the type of protection in this instruction manual.

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other than the selected type of protection when the transmitter is installed.

2.9.2 CSA Certification

a. CSA Intrinsically Safe Type

Caution for CSA Intrinsically safe type. (Following contents refer to “DOC No. ICS003-A12 P.1-1 and P.1-2.”)

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /CS1 are applicable for use in hazardous locations

Certificate: 1053843

• Applicable Standard: C22.2 No.0, No.0.4, No.25, No.30, No.94, No.142, No.157, No.213

• Intrinsically Safe for Class I, Division 1, Groups A, B, C & D. Class II, Division 1, Groups E, F & G and Class III, Division 1 Hazardous Locations.

• Nonincendive for Class I, Division 2, Groups A, B, C & D, Class II, Division 2, Groups F & G, and Class III, Hazardous Locations. (not use Safety Barrier)

• Encl. “Type 4X”

• Temperature Class: T4

• Ambient temperature: –40 to 60°C

• Process Temperature: 120°C max.

Note 2. Entity Parameters

• Intrinsically safe ratings are as follows:

Maximum Input Voltage (Vmax) = 30 V Maximum Input Current (Imax) = 165 mA Maximum Input Power (Pmax) = 0.9 W Maximum Internal Capacitance (Ci) = 22.5 nF Maximum Internal Inductance (Li) = 730 µH

* Associated apparatus (CSA certified barriers)

Maximum output voltage (Voc) ≤ 30 V Maximum output current (Isc) ≤ 165 mA Maximum output power (Pmax) ≤ 0.9 W

Note 3. Installation

• All wiring shall comply with Canadian Electrical 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 prohibited and will void Canadian Standards Intrinsically safe and nonincendive Certification.

[Intrinsically Safe]

Hazardous Location Nonhazardous Location

Class I, II, III, Division 1, Groups A, B, C, D, E, F, G

EJA Series Pressure Transmitters

Supply

Hazardous Location Nonhazardous Location

Class I, II, Division 2, Groups A, B, C, D, E, F, G Class III

EJA Series Pressure Transmitters

Supply

–

[Nonincendive]

+ –

Safety Barrier

–

Not Use Safety Barrier

General Purpose Equipment

+ –

General Purpose Equipment

+ –

F0204.EPS

b. CSA Explosionproof Type

Caution for CSA explosionproof type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /CF1 are applicable for use in hazardous locations:

Certificate: 1089598

• Applicable Standard: C22.2 No.0, No.0.4, No.25, No.30, No.94, No.142

• Explosionproof for Class I, Division 1, Groups B, C and D.

• Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G.

• Encl “Type 4X”

• Temperature Class: T6, T5, and T4

• Process Temperature: 85°C (T6), 100°C (T5), and 120°C (T4)

• Ambient Temperature: –40 to 80°C

• Supply Voltage: 42 V dc max.

• Output Signal: 4 to 20 mA

2-5

IM 01C22K01-01E

2. HANDLING CAUTIONS

Note 2. Wiring

• All wiring shall comply with Canadian Electrical Code Part I and Local Electrical Codes.

• In hazardous location, wiring shall be in conduit as shown in the figure.

CAUTION: SEAL ALL CONDUITS WITHIN 50 cm OF THE ENCLOSURE. UN SCELLEMENT DOIT ÊTRE INSTALLÉ À MOINS DE 50 cm DU BÎTIER.

• When installed in Division 2, “SEALS NOT REQUIRED.”

Note 3. Operation

• Keep the “CAUTION” label attached to the transmitter.

CAUTION: OPEN CIRCUIT BEFORE REMOVING COVER. OUVRIR LE CIRCUIT AVANT D´NLEVER LE COUVERCLE.

• Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a hazardous location.

Note 4. Maintenance and Repair

Non-Hazardous

Locations

Non-hazardous Location Equipment

42 V DC Max. 4 to 20 mA DC Signal

Non-Hazardous

Locations

Non-hazardous Location Equipment

42 V DC Max. 4 to 20 mA DC Signal

Hazardous Locations Division 1

50 cm Max.

Sealing Fitting

Hazardous Locations Division 2

Sealing Fitting

Conduit

EJA Series

F0205.EPS

c. CSA Intrinsically Safe Type/CSA

Explosionproof Type

Model EJA Series pressure transmitters with optional code /CU1 can be selected the type of protection (CSA Intrinsically Safe or CSA Explosionproof) for use in hazardous locations.

Note 1. For the installation of this transmitter,

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other than the selected type of protection when the transmitter is installed.

2.9.3 IECEx 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) for use in hazardous locations.

Note 1. For the installation of this transmitter,

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other than the selected type of protection when the transmitter is installed.

a. IECEx Intrinsically Safe Type / type n

Caution for IECEx Intrinsically safe and type n.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /SU2 are applicable for use in hazardous locations

• No. IECEx KEM 06.0007X

• Applicable Standard: IEC 60079-0:2004, IEC 60079-11:1999, IEC 60079-15:2005, IEC 60079-26:2004

• Type of Protection and Marking Code: Ex ia IIC T4, Ex nL IIC T4

• Ambient Temperature: –40 to 60°C

• Max. Process Temp.: 120°C

• Enclosure: IP67

Note 2. Entity Parameters

• Intrinsically safe ratings are as follows: Maximum Input Voltage (Ui) = 30 V Maximum Input Current (Ii) = 165 mA Maximum Input Power (Pi) = 0.9 W Maximum Internal Capacitance (Ci) = 22.5 nF Maximum Internal Inductance (Li) = 730 µH

2-6

IM 01C22K01-01E

2. HANDLING CAUTIONS

• Type “n” ratings are as follows: Maximum Input Voltage (Ui) = 30 V Maximum Internal Capacitance (Ci) = 22.5 nF Maximum Internal Inductance (Li) = 730 µH

• Installation Requirements Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi, Co ≥ Ci + Ccable, Lo ≥ Li + Lcable Uo, Io, Po, Co, and Lo are parameters of barrier.

Note 3. Installation

• In any safety barreir 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.

• The instrument modification or parts replacement

by other than authorized representative of Yokogawa Electric Corporation and will void IECEx Intrinsically safe and type n certification.

• The cable entry devices and blanking elements for

type n shall be of a certified type providing a level of ingress protection of at least IP54, suitable for the conditions of use and correctly installed.

• Electrical Connection:

The type of electrical connection is stamped near the electrical connection port according to the following marking.

T0202.EPS

Location of the marking

F0213.EPS

Note 4. Operation

• WARNING:

WHEN AMBIENT TEMPERATURE ≥ 55°C,

USE THE HEAT-RESISTING CABLES ≥ 90°C.

Note 5. Special Conditions for Safe Use

• WARNING:

IN THE CASE WHERE THE ENCLOSURE OF

THE PRESSURE TRANSMITTER IS MADE OF ALUMINUM, IF IT IS MOUNTED IN AN AREA WHERE THE USE OF ZONE 0 IS REQUIRED, IT MUST BE INSTALLED SUCH, THAT, EVEN IN THE EVENT OF RARE INCIDENTS, IGNITION SOURCES DUE TO IMPACT AND FRICTION SPARKS ARE EXCLUDED.

[Intrinsically Safe]

Hazardous Location Nonhazardous Location

Group I/IIC, Zone 0

EJA Series Pressure Tr ansmitters

Supply

Hazardous Location Nonhazardous Location

Group IIC, Zone 2

EJA Series Pressure Tr ansmitters

Supply

–

[type n]

+ –

IECEx certified Safety Barrier

+ –

Not Use Safety Barrier

+ –

General Purpose Equipment

+ –

F0214.EPS

IECEx Certified Equipment [nL]

+ –

F0215.EPS

b. IECEx Flameproof Type

Caution for IECEx flameproof type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /SU2 are applicable for use in hazardous locations:

• No. IECEx KEM 06.0005

• Applicable Standard: IEC 60079-0:2004, IEC 60079-1:2003

• Type of Protection and Marking Code: Ex d IIC T6...T4

• Enclosure: IP67

• Maximum Process Temperature: 120°C (T4), 100°C (T5), 85°C (T6)

• Ambient Temperature: –40 to 75°C (T4), –40 to 80°C (T5), –40 to 75°C (T6)

• Supply Voltage: 42 V dc max.

• Output Signal: 4 to 20 mA dc

Note 2. Wiring

• In hazardous locations, the cable entry devices shall be of a certified flameproof type, suitable for the conditions of use and correctly installed.

• Unused apertures shall be closed with suitable flameproof certified blanking elements. (The plug attached is certificated as the flame proof IP67 as a part of this apparatus.)

• In case of ANSI 1/2 NPT plug, ANSI hexagonal wrench should be applied to screw in.

Note 3. Operation

• WARNING:

AFTER DE-ENERGIZING, DELAY 10 MINUTES

BEFORE OPENING.

2-7

IM 01C22K01-01E

2. HANDLING CAUTIONS

• WARNING: WHEN AMBIENT TEMPERATURE ≥ 70°C,

USE THE HEAT-RESISTING CABLES ≥ 90°C.

• Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a 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 IECEx Certification.

2.9.4 CENELEC ATEX (KEMA) Certification

(1) Technical Data

a. CENELEC ATEX (KEMA) Intrinsically Safe

Type

Caution for CENELEC ATEX (KEMA) Intrinsically safe type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /KS2 for potentially explosive atmospheres:

• No. KEMA 02ATEX1030 X

• Applicable Standard: EN50014:1997, EN50020:1994, EN50284:1999

• Type of Protection and Marking code: EEx ia IIC T4

• Temperature Class: T4

• Enclosure: IP67

• Process Temperature: 120°C max.

• Ambient Temperature: –40 to 60°C

Note 2. Electrical Data

• In type of explosion protection intrinsic safety EEx ia IIC only for connection to a certified intrinsically safe circuit with following maximum values:

Ui = 30 V Ii = 165 mA Pi = 0.9 W Effective internal capacitance; Ci = 22.5 nF Effective internal inductance; Li = 730 µH

Note 3. Installation

• All wiring shall comply with local installation requirements. (Refer to the installation diagram)

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 KEMA Intrinsically safe Certification.

Note 5. Special Conditions for Safe Use

• In the case where the enclosure of the Pressure Transmitter is made of aluminium, if it is mounted in an area where the use of category 1 G apparatus is required, it must be installed such, that, even in the event of rare incidents, ignition sources due to impact and friction sparks are excluded.

[Installation Diagram]

Hazardous Location

Transmitter

Supply

–

*1: In any safety barriers used the output current must be limited by

a resistor “R” such that Imaxout-Uz/R.

Nonhazardous Location

Safety Barrier

–

F0208.EPS

b. CENELEC ATEX (KEMA) Flameproof Type

Caution for CENELEC ATEX (KEMA) flameproof type.

Note 1. Model EJA Series differential, gauge, and

absolute pressure transmitters with optional code /KF2 for potentially explosive atmospheres:

• No. KEMA 02ATEX2148

• Applicable Standard: EN50014:1997, EN50018:2000

• Type of Protection and Marking Code: EEx d IIC T6···T4

• Temperature Class: T6, T5, and T4

• Enclosure: IP67

• Maximum Process Temperature: 85°C (T6), 100°C (T5), and 120°C (T4)

• Ambient Temperature: T4 and T6; –40 to 75°C, T5; –40 to 80°C

Note 2. Electrical Data

• Supply voltage: 42 V dc max.

• Output signal: 4 to 20 mA

Note 3. Installation

• All wiring shall comply with local installation requirement.

• The cable entry devices shall be of a certified flameproof type, suitable for the conditions of use.

Note 4. Operation

• Keep the “CAUTION” label to the transmitter.

CAUTION: AFTER DE-ENERGIZING, DELAY 10 MINUTES BEFORE OPENING. WHEN THE AMBIENT TEMP.70°C, USE HEAT-RESISTING CABLES90°C.

2-8

IM 01C22K01-01E

2. HANDLING CAUTIONS

• Take care not to generate mechanical sparking when accessing to the instrument and peripheral devices in a hazardous location.

Note 5. Maintenance and Repair

• The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void KEMA Flameproof Certification.

c. CENELEC ATEX (KEMA) Intrinsically Safe

Type/CENELEC ATEX (KEMA) Flameproof Type/CENELEC ATEX Type n

Model EJA Series pressure transmitters with optional code /KU2 can be selected the type of protection CENELEC ATEX (KEMA) Intrinsically Safe, Flameproof or CENELEC ATEX Type n for use in hazardous locations.

Note 1. For the installation of this transmitter,

Note 2. In order to avoid confusion, unnecessary

marking is crossed out on the label other than the selected type of protection when the transmitter is installed.

• CENELEC ATEX Type of Protection “n”

WARNING

When using a power supply not having a nonincendive circuit, please pay attention not to ignite in the surrounding flammable atmosphere. In such a case, we recommend using wiring metal conduit in order to prevent the ignition.

Note 3. Maintenance and Repair

• The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corporation is prohibited and will void Type of Protection “n”.

[Installation Diagram]

Hazardous Location

Tr ansmitter

Ratings of the Power Supply as follows;

(Zone 2 only)

Supply

Maximum Voltage: 30 V

–

Nonhazardous Location

Power Supply

–

F0209.EPS

• CENELEC ATEX Type of Protection “Dust”

• Applicable Standard: EN50281-1-1:1997

• Type of Protection and Marking Code: II 1D

• Maximum surface temperature: T65°C (Tamb.: 40°C), T85°C (Tamb.: 60°C), and T105°C (Tamb.: 80°C)

Note 1. Installation instructions

The cable entry devices and blanking elements shall be of a certificated type providing a level of ingress protection of at least IP6x, suitable for the conditions of use and correctly installed.

(2) Electrical Connection

The type of electrical connection is stamped near the electrical connection port according to the following marking.

• Applicable Standard: EN60079-15

• Referential Standard: IEC60079-0, IEC60079-11

• Type of Protection and Marking Code: Ex nL IIC T4

• Temperature Class: T4

• Enclosure: IP67

• Process Temperature: 120°C max.

• Ambient Temperature: –40 to 60°C

Note 1. Electrical Data

Ui = 30 V Effective internal capacitance; Ci = 22.5 nF Effective internal inductance; Li = 730 µH

Note 2. Installation

• All wiring shall comply with local installation requirements. (refer to the installation diagram)

Location of the marking

F0200.EPS

(3) Installation

WARNING

• All wiring shall comply with local installation requirement and local electrical code.

• There is no need of the conduit seal for both of Division 1 and Division 2 hazardous locations because this product is sealed at factory.

• In case of ANSI 1/2 NPT plug, ANSI hexagonal wrench should be applied to screw in.

2-9

IM 01C22K01-01E

2. HANDLING CAUTIONS

(4) Operation

WARNING

• OPEN CIRCUIT BEFORE REMOVING COVER. INSTALL IN ACCORDENCE WITH THIS UWER’S MANUAL

• Take care not to generate mechanical sparking when access to the instrument and peripheral devices in hazardous locations.

(5) Maintenance and Repair

WARNING

The instrument modification or parts replacement by other than authorized Representative of Yokogawa Electric orporation is prohibited and will void the certification.

(6) Name Plate

OUTPUT: Output signal. MWP: Maximum working pressure. CAL RNG: Specified calibration range. DISP MODE: Specified display mode. OUTPUT MODE: Specified output mode. NO.: Serial number and year of production*1.

TOKYO 180-8750 JAPAN: The manufacturer name and the address*2.

*1: The third figure from the last shows the last one

figure of the year of production. For example, the production year of the product engraved in “NO.” column on the name plate as follows is 2001.

12A819857 132

The year 2001

*2: “180-8750” is a zip code which represents the

following address.

2-9-32 Nakacho, Musashino-shi, Tokyo Japan

 Name plate

 Tag plate for flameproof type

 Tag plate for intrinsically safe type

 Tag plate for type n protection

: Refer to USER'S MANUAL

2.9.5 TIIS Certification

a. TIIS Flameproof Type

The model EJA Series pressure transmitter with optional code /JF3, which has obtained certification according to technical criteria for explosion-protected construction of electric machinery and equipment (Standards Notification No. 556 from the Japanese Ministry of Labor) conforming to IEC standards, is designed for hazardous areas where inflammable gases or vapors may be present. (This allows installation in Division 1 and 2 areas)

To preserve the safety of flameproof equipment requires great care during mounting, wiring, and piping. Safety requirements also place restrictions on maintenance and repair activities. Users absolutely must read “Installation and Operating Precautions for TIIS Flameproof Equipment” at the end of this manual.

 Tag plate for flameproof, intrinsically safe type, type n protection, and Dust

T65C (Tamb.: 40C), T85C (Tamb.: 60C),

and T105C (Tamb.: 80C)

MODEL: Specified model code. STYLE: Style code. SUFFIX: Specified suffix code. SUPPLY: Supply voltage.

F0298.EPS

2-10

IM 01C22K01-01E

2. HANDLING CAUTIONS

CAUTION

(For TIIS flameproof type 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.

Hazardous Location Nonhazardous Location

4 to 20 mA DC 1 to 5 V DC

Transmitter

Figure 2.3 Example of using DCS (Distributed Control

System)

Power Supply

DCS

Display

F0210.EPS

CAUTION

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 2.4. 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.

60 50

20

020406080100 120

Process Temperature (C)

Ambient

Temperature

(C)

Figure 2.4 Selecting Cables

Region A

Region B

F0211.EPS

b. TIIS Intrinsically Safe Type

The model EJA Series pressure transmitter with optional code /JS3, which has obtained certification according to technical criteria for explosionprotected construction of electric machinery and equipment (Standards Notification No.556 from the Japanese Ministry of Labor) conforming to IEC standards, is designed for hazardous areas where explosive or inflammable gases or vapors may be present. (This allows installation in Division 0, 1 and 2 areas)

To preserve the safety of flameproof equipment requires great care during mounting,wiring, and piping. Safety requirements also place restrictions on maintenance and repair activities. Users absolutely must read “Installation and Operating Precautions for TIIS Intrinsically Safe Equipment” at the end of this manual.

CAUTION

For using a safety-barrier with a pressure transmitter, the safety-barrier must be certified as a safety-barrier itself. A safety-barrier must be used under the following condition.

(1) Condition of the current and voltage limits

Maximum output voltage(Uo) ≤ 28V Maximum output current(Io) ≤ 94.3mA Maximum output power (Po) ≤ 0.66W

(2) Category and Group

Category ia Group II C

(3) Relations between a maximum allowed

inductance and a field wiring inductance, between a maximum allowed capacitance and a field wiring capacitance.

Lo ≥ Li + Lw Co ≥ Ci + Cw (Li = 730µH, Ci=11nF)

Lo = Maximum external inductance Li = Maximum internal inductance Lw = Field wiring inductance Go = Maximum external capacitance Ci = Maximum internal capacitance Cw = Field wiring capacitance

2-11

IM 01C22K01-01E

Hazardous Location Nonhazardous

4 to 20 mA DC

Tr ansmitter

Li=730 µH Ci=11 nF

Figure 2.5 Diagram for Connecting Safety Barrierre

Lw, Cw

Location

Safety Barrier

Lo, Co

F0212.EPS

2.10 EMC Conformity Standards

EN61326-1 Class A, Table 2 (For use in industrial locations)

EN61326-2-3

CAUTION

This instrument is a Class A product, and it is designed for use in the industrial environment. Please use this instrument in the industrial environment only.

2. HANDLING CAUTIONS

(2) Installation Category I

“Overvoltage category (Installation category)”

describes a number which defines a transient overvoltage condition. It implies the regulattion for impulse withstand voltage. “I” applies to electrical equipment which is supplied from the circuit when appropriate transient overvoltage control means (interfaces) are provided.

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.

2.11 PED (Pressure Equipment Directive)

EJA series of pressure transmitters are categorized as pressure accessories of this directive 97/23/EC, which corresponds to Article 3, Paragraph 3 of PED, denoted as Sound Engineering Practice (SEP).

2.12 Low Voltage Directive

Applicable standard: EN61010-1

(1) Pollution Degree 2

“Pollution degree” describes the degree to which a

solid, liquid, or gas which deteriorates dielectric strength or surface resistivity is adhering. “2” applies to normal indoor atmosphere. Normally, only non-conductive pollution occurs. Occasionally, however, temporary conductivity caused by condensation must be expected.

2-12

IM 01C22K01-01E

3. COMPONENT NAMES

Vertical impulse piping type

Process connection

Pressure-detector section

Cover flange

CPU assembly

Integral indicator

(Note 1)

Tr ansmitter section

Setting pin(CN4)

Mounting

Amplifier cover

Range-setting switch (See Subsection 7.7)

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 delivery (unless

option code /C1 is specified in the order). The setting can be confirmed by calling up parameter D52 using the BRAIN TERMINAL. Refer to Subsection 8.3.3 (10).

Note 3: If optional code /F1 is specified, output signal is –2.5% or lower.

screw

(Note 1)

Setting Pin (CN4) Position

(Note 2)

H L H L

Process connector Manifold

Te r minal box cover

Conduit connection

Burn-Out Direction

HIGH

LOW

Output at Burn-Out

110% or

higher

lower

Vent plug

Drain plug

5% or

(Note3)

Horizontal impulse piping type

External indicator conduit connection(Note 1)

Conduit connection

Zeroadjustment screw

Process connection

Process connector

Pressure-detector section

F0301.EPS

Figure 3.1 Component Names

Table 3.1 Display Symbol

Display Symbol

%, Pa, kPa, MPa, kgf/cm2, gf/cm2, mbar, bar, atm, mmHg, mmH2O, inH2O, inHg, ftH2O, psi, Torr

Meaning of Display Symbol

Display mode is ‘square root’. (Display is not lit when ‘proportional’ mode.) The output signal being zero-adjusted is increasing. The output signal being zero-adjusted is decreasing.

Select one of these sixteen available engineering units for the display.

T0301.EPS

3-1

IM 01C22K01-01E

4. INSTALLATION

4.1 Precautions

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 10.1 “Standard Specifications.”

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.

4.2 Mounting

 The transmitter can be mounted on a nominal 50

mm (2-inch) pipe using the mounting bracket supplied, as shown in Figure 4.2.1 and 4.2.2. 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 with a torque of approximately 39 N·m {4kgf·m}.

 The transmitter is shipped with the manifold set up

as per the order specifications.

 For correct flow measurement, the flow path must

always be filled with fluid; otherwise, measurement accuracy cannot be assured.

 For the vertical impulse piping type, it is recom-

mended that the manifold be mounted facing up for liquid flow measurement; facing down for gas flow measurement, as shown in Figure 4.2.2.

Vertical pipe mounting

Transmitter mounting bolt

U-bolt nut

Mounting bracket

50 mm(2-inch) pipe

Horizontal pipe mounting

U-bolt nut

Mounting bracket

50 mm(2-inch) pipe

Figure 4.2.1 Transmitter Mounting (Horizontal Impulse

Piping Type)

U-bolt

Transmitter mounting bolt

U-bolt

F0401.EPS

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IM 01C22K01-01E

4. INSTALLATION

Vertical pipe mounting(Manifold upside)

Mounting bracket

50 mm(2-inch) pipe

U-bolt nut

Transmitter mounting bolt

Vertical pipe mounting(Manifold downside)

U-bolt nut

Transmitter mounting bolt

Mounting bracket

4.3 Rotating Transmitter Section

The DPharp transmitter section can be rotated in 90° segments.

1) Remove the two Allen screws that fasten the transmitter section and capsule assembly, using the Allen wrench.

2) Rotate the transmitter section slowly in 90° seg- ments.

3) Tighten the two Allen screws to a torque of 5 N·m.

U-bolt

IMPORTANT

Do not rotate the transmitter section more than 180°.

Vertical impulse pipe

Pressure-detector section

U-bolt

50 mm(2-inch) pipe

F0402.EPS

Figure 4.2.2 Transmitter Mounting (Vertical Impulse Piping

Type)

Rotate 90 or 180 segments

Horizontal impulse pipe

Transmitter section

Conduit connection

Transmitter section

Rotate 90 or 180 segments

Conduit connection

Zero-adjustment screw

Pressure-detector section

F0403.EPS

Figure 4.3 Rotating Transmitter Section

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4.4 Changing the Direction of Integral Indicator

IMPORTANT

Always turn OFF power, release pressure and remove a transmitter to non-hazardous area before disassembling and reassmbling an indicator.

An integral indicator can be installed in the following three directions. Follow the instructions in section 9.4 for removing and attaching the integral indicator.

4. INSTALLATION

Figure 4.4 Integral Indicator Direction

F0404.EPS

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5. INSTALLING IMPULSE PIPING

5.1 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. (For disassembly and reassembly procedures, see Subsection 9.4.4)

Pay careful attention to the following points when routing the process piping and connection the process piping to the transmitter.

5.1.1 Connecting Process Piping to the

Transmitter

(1) Confirming the Process Fluid Flow Direc-

tion (Figure 5.1.1)

The mark “ ” on the manifold indicates the direction in which the process fluid is flowed (from right to left). When connecting the process piping to the process connector, confirm the process fluid flow direction.

Manifold

Flow direction(from right to left)

Process connection (outflow side)

Orifice name plate

Process connection

(inflow side)

(2) Tightening the Process Connector Mount-

ing Bolts

The transmitter is shipped with the process connector mounting bolts only loosely tightened. After connecting the process piping, tighten these bolts uniformly to prevent leaks with a torque of 39 to 49 N·m {4 to 5 kgf·m}.

(3) Removing the Process Connector Port

Dustproof Cap

The process connector port threads are covered with a plastic cap to exclude dust. This cap must be removed before connecting the piping. (Be careful not to damage the threads when removing this cap. Never insert a screwdriver or other tool between the cap and port threads to remove the cap.)

5.1.2 Routing the Process Piping

(1) Relationship between Process Fluid and

Manifold Locations (For the vertical impulse piping type)

If condensate (or gas) generated in the process piping were allowed to accumulate, then it would be necessary to remove it periodically by opening the drain (or vent) plug. However, this would generate a transient disturbance in the pressure measurement. Therefore, the process piping must be routed so that any condensate (or gas) generated in the process piping will not accumulate in the pressure-sensing assembly of the transmitter.

Bolt

Process connector (low pressure side)

Figure 5.1.1 Manifold and Flow Direction Indication

Process connector (high pressure side)

F0501.EPS

NOTE

• If the process fluid is a gas, then as a rule the manifold must be located at the downside of the pressure-sensing assembly. (Figure 5.1.2)

• If the process fluid is a liquid, then as a rule the manifold must be located at the upside of the pressure-sensing assembly. (Figure 5.1.3)

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5. INSTALLING IMPULSE PIPING

(2) Pipe Size for Process Piping

Use a 15 mm (1/2-inch) pipe for process piping connection to the process connector.

(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.

Manifold

Figure 5.1.2 Manifold Location at the Downside (for Gas

Flow Measurement)

F0502.EPS

• The high pressure connecting port on the transmitter is shown on the right (as viewed from the front).

• The transmitter process piping connection is shown for a vertical impulse piping connection configuration in which the direction of process flow is from right to left.

• The process piping material used must be compatible with the process pressure, temperature, and other conditions.

•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.

Gas flow measurement

Union or flange

Manifold

F0503.EPS

Figure 5.1.3 Manifold Location at the Upside (for Liquid

Flow Measurement)

5.2 Process Piping Connection Examples

Figure 5.2 shows examples of typical process piping connections. 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.), in order to make appropriate changes and additions to the connection configurations.

Manifold

Process piping

Liquid flow measurement

Manifold

Union or flange

Process piping

Figure 5.2 Process Piping Connection Examples

Stop valve

F0504.EPS

Note the following points when referring to these piping examples.

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