YOKOGAWA EJA210E User Manual

User’s
Manual
Contents
1. Introduction
1.1 For Safe Use of Product ..............................................2
1.2 Warranty ......................................................................4
1.3 ATEX Documentation ..................................................5
2. Handling Cautions
2.1 ModelandSpecicationsCheck .................................7
2.2 SelectingtheInstallationLocation ..............................7
2.3 PressureConnection ..................................................7
2.4 InstallationofanExplosion-ProtectedInstrument ......7
2.5 EMCConformityStandards ..................................... 27
2.6 Pressure Equipment Directive (PED) ...................... 28
2.7 Safety Requirement Standards ................................ 29
3. Installation
3.1 Mounting................................................................... 30
3.2 MountingtheDiaphragmSeals ......................................30
3.3 DiaphragmSealsInstallationConsideration ............ 31
3.4 MountingtheFlushingConnectionRing .................. 32
3.5 AfxingtheTeonFilm ............................................. 33
3.6 Rotating Transmitter Section .................................... 34
3.7 ChangingtheDirectionofIntegralIndicator............. 34
4. Installing Impulse Piping
4.1 ImpulsePipingInstallationPrecautions ................... 35
4.2 ImpulsePipingConnectionExamples ..................... 37
4.3 ProcessPipingInstallationPrecautions(EJ115) 38
5. Wiring
5.1 Wiring Precautions ................................................... 40
5.2 ConnectionsofExternalWiringtoTerminalBox ...... 40
5.3 Wiring ....................................................................... 43
5.4 RTDCableConnection(EJX910A/EJX930A) ......... 45
5.5 Grounding ................................................................ 47
5.6 PowerSupplyVoltageandLoadResistance ........... 47
6. Operation
6.1 Preparation for Starting Operation ........................... 48
6.2 Zero Point Adjustment .............................................. 48
6.3 LocalParameterSetting .......................................... 49
7. Errors and Countermeasures
EJX and EJA-E Series
Differential Pressure and
Pressure Transmitters
Installation Manual
IM01C25A01-01E
IM01C25A01-01E
12thEdition

YOKOGAWA EJA210E Specifications

General

Model	EJA210E
Type	Differential Pressure Transmitter
Process Temperature Limits	-40 to 120 °C (-40 to 248 °F)
Storage Temperature	-40 to 85 °C (-40 to 185 °F)
Output Signal	4 to 20 mA DC
Communication Protocol	HART, Foundation Fieldbus
Power Supply	10.5 to 42 V DC (HART/BRAIN)
Operating Temperature	-40 to 85 °C
Relative Humidity	0 to 100% RH
Material	SUS316L
Protection	IP67, NEMA 4X
Housing Material	Aluminum alloy
Ambient temperature limits	-40 to 85°C (−40 to 185°F)

Summary

Introduction

1.1 For Safe Use of Product

Essential safety guidelines for installation, wiring, operation, and maintenance of the transmitter.

Handling Cautions

2.3 Pressure Connection

Critical safety precautions for connecting impulse piping to the transmitter under pressure.

2.4.1 FM Approval

FM intrinsic safety and nonincendive requirements for HART/BRAIN protocol transmitters in hazardous locations.

2.4.2 CSA Certification

CSA intrinsic safety and nonincendive standards for HART/BRAIN protocol transmitters in hazardous locations.

2.4.3 ATEX Certification

ATEX intrinsic safety and flameproof standards for HART/BRAIN and Fieldbus transmitters in hazardous areas.

2.4.4 IECEx Certification

IECEx intrinsic safety and flameproof standards for HART/BRAIN and Fieldbus transmitters in hazardous areas.

Installation

3.1 Mounting

3.2 Mounting the Diaphragm Seals

Installing Impulse Piping

4.1 Impulse Piping Installation Precautions

Key precautions for routing and connecting impulse piping to ensure accurate pressure measurement and safety.

4.1.1 Connecting Impulse Piping to the Transmitter

Wiring

5.1 Wiring Precautions

Critical precautions for wiring, including noise reduction, explosion-proof requirements, and sealant application.

5.2 Connections of External Wiring to Terminal Box

5.6 Power Supply Voltage and Load Resistance

Operation

6.1 Preparation for Starting Operation

6.2 Zero Point Adjustment

Details the procedure for adjusting the transmitter's zero point using the external adjustment screw.

Errors and Countermeasures

Alarm Message Summary

Lists common alarm messages, their causes, output operations during errors, and suggested countermeasures.