YOKOGAWA DPharp EJA110E - User Manual

User’s
Manual
Contents
1. Introduction
1.1 For Safe Use of Product ..............................................3
1.2 Warranty ......................................................................5
2. Handling Cautions
.................................7
..............................7
..................................................7
......7
..................................... 31
...................... 31
................................................... 32
................................ 33
3. Installation
3.1 Mounting................................................................... 34
3.2
......................................34
............ 35
.................. 36
............................................. 37
.................................... 38
............. 38
4. Installing Impulse Piping
................... 39
..................... 42
115 42
5. Wiring
5.1 Wiring Precautions ................................................... 44
...... 44
5.3 Wiring ....................................................................... 47
......... 49
5.5 Grounding ................................................................ 51
........... 51
6. Operation
6.1 Preparation for Starting Operation ........................... 52
.............................................. 52
.......................................... 53
7. Errors and Countermeasures
EJX and EJA-E Series
Differential Pressure and
Pressure Transmitters
Installation Manual

YOKOGAWA DPharp EJA110E Specifications

General

Model	EJA110E
Category	Transmitter
Manufacturer	Yokogawa
Stability	±0.1% of URL per 10 years
Housing Material	Aluminum or stainless steel
Output Signal	4 to 20 mA
Power Supply	10.5 to 42 V DC (HART/BRAIN)
Temperature Range	-40 to 85 °C
Process Temperature	-40 to 120°C (-40 to 248°F)
Process Connection	1/2" NPT, 1/4" NPT
Protection Rating	IP66
Material	Stainless steel

Summary

Handling Cautions

Installation of Explosion-Protected Instrument

Covers installation requirements for explosion-protected instrument types.

FM Approval

Details FM approval standards and ratings for hazardous locations.

CSA Certification

Details CSA certification standards and ratings for hazardous locations.

ATEX Certification

Details ATEX certification standards and ratings for hazardous locations.

IECEx Certification

Details IECEx certification standards and ratings for hazardous locations.

Installation

Mounting the Diaphragm Seals

Diaphragm Seals Installation Consideration

Installing Impulse Piping

Impulse Piping Installation Precautions

Critical precautions for accurate impulse piping installation.

Process Piping Installation Precautions

Wiring

Wiring Precautions

Essential precautions for safe and noise-free wiring practices.

Connections of External Wiring to Terminal Box

Wiring

Operation

Preparation for Starting Operation

Zero Point Adjustment

Procedure for adjusting the transmitter's zero point via screw or communicator.

Local Parameter Setting

Errors and Countermeasures

Alarm Message Summary (Except EJX910 A and EJX930 A)

Lists alarm messages, causes, and countermeasures for BRAIN/HART protocols.

Alarm Message Summary (For EJX910 A and EJX930 A, HART protocol type)

Details alarm messages, causes, and countermeasures for EJX910A/EJX930A.