Product Description

The  EJX440A  high-performance pressure transmitter adopts single-crystal silicon resonant sensing technology and is suitable for  measuring the pressure of liquids, gases or steam. It converts the measured differential pressure into a 4～20mA DC  current signal output, and features fast response, remote configuration, self-diagnosis and other functions.

Core Features

1. High-precision measurement with a basic accuracy of up to ±0.15% FS and extremely low long-term zero drift.

2. Adopts DPharp digital resonant sensor with direct digital signal output and excellent electromagnetic interference      resistance.

3. Standard 4-20mA analog output + HART/BRAIN digital communication.

4. Fast response speed and excellent performance in dynamic pressure measurement.

5. Supports SIL2 safety level certification and meets the requirements of process safety interlock.

6. Intrinsically safe explosion-proof design, suitable for flammable and explosive hazardous areas.

7. Wide operating temperature range, strong environmental adaptability, maintenance-free and long service life.

8. Comes with local button settings, enabling on-site configuration without a handheld terminal.

Technical Specifications

1. Measuring Medium: Gas, Liquid, Steam.

2. Output Signal: 4-20mA DC + HART 7 Communication.

3. Measurement Accuracy: ±0.15% FS.

4. Explosion-proof Grade: Ex ia IIC T6 Intrinsically Safe Explosion-proof.

5. Communication Protocols: HART, BRAIN, FF, Profibus PA optional.

6. Process Material: 316L stainless steel, Hastelloy, etc. optional.

7. Operating Ambient Temperature: -40℃ ~ +60℃.

Application Scenarios

1. Absolute Pressure Monitoring for Petrochemical Industry, Refinery Distillation Columns and Reaction Kettles.

2. Pressure Measurement for Power Plant Boilers, Vacuum Systems and Negative Pressure Working Conditions.

3. Absolute Pressure Control for Oil and Gas Fields, Pipelines and Storage Tanks.

4. Vacuum and closed-condition measurement for pharmaceutical, food and fine chemical industries.

5. Environmental Water Treatment and Pressure Acquisition in Light Industry Automation Processes.