1. Product Overview:The Yokogawa EJA120E high-performance micro differential pressure transmitter is a traditional mounted pressure transmitter in the Yokogawa EJA transmitter-E series, utilizing single crystal silicon resonant sensor technology. It is suitable for measuring the flow, liquid level, density, and pressure of liquids, gases, or steam. The EJA120E converts the measured differential pressure into a 4-20mA DC current signal output, featuring fast response, remote setting, and self-diagnosis functions. When selecting the Yokogawa EJA120E high-performance micro differential pressure transmitter, it is important to confirm key parameters such as calibration range and units, output mode and display mode, HART protocol or BRAIN protocol, etc.

Here are the key features of the Yokogawa EJA120E high-performance micro differential pressure transmitter:

High Accuracy: ±0.2% standard, with an option for ±0.09% using the /HAC configuration.

Long-Term Stability: Maintains ±0.3% stability over one year, reducing recalibration needs.

Fast Response: 150 ms response time for dynamic process control.

True Draft Range Design: Engineered specifically for ultra-low differential pressure applications.

SIL 2/3 Certified: Certified by Exida and TÜV for use in safety instrumented systems.

Local Parameter Setting (LPS): Enables configuration directly from the device without external tools.

Multiple Communication Protocols: Supports HART 5/7, FOUNDATION Fieldbus, PROFIBUS PA, BRAIN, and 1–5 VDC HART 7 (Low Power).

DPharp Digital Sensor: Offers superior performance and diagnostics compared to analog sensors.

Overpressure Protection: Built-in mechanism to safeguard against process surges.

Extended Calibration Intervals: Reduces maintenance costs and downtime.

2. Technical Parameters of the Yokogawa EJA120E High-Performance Micro Differential Pressure Transmitter:
 

3. Frequently Asked Questions – Yokogawa EJA120E

1. What is the EJA120E used for? 

It’s designed for ultra-low differential pressure measurement in applications like draft range flow, level, and density monitoring—especially in HVAC, clean rooms, and combustion control.

2. What makes the EJA120E different from other EJA models? 

The EJA120E is optimized for draft range measurements (as low as 0–2.5 kPa), featuring a highly sensitive resonant silicon sensor and enhanced stability for low-pressure applications.

3. What is the accuracy of the EJA120E? 

Standard accuracy is ±0.2%, with an optional ±0.09% when configured with the /HAC option.

4. Is the EJA120E suitable for safety systems? 

Yes, it is SIL 2/3 certified by Exida and TÜV, making it suitable for use in Safety Instrumented Systems (SIS).

5. What communication protocols are supported? 

It supports HART 5/7, FOUNDATION Fieldbus, PROFIBUS PA, BRAIN, and 1–5 VDC HART 7 (Low Power).

6. Can I configure the transmitter without a handheld communicator? 

Yes, it features Local Parameter Setting (LPS), allowing basic configuration directly from the device.

7. What is the response time? 

The transmitter responds in 150 milliseconds, making it suitable for dynamic process control.

8. What kind of sensor does it use? 

It uses Yokogawa’s DPharp resonant silicon sensor, known for high stability and digital precision.

9. What is the ambient temperature range? 

It operates in environments from -40°C to +85°C, depending on the selected options and certifications.

10. How often does it need recalibration? 

Thanks to its ±0.3% per year stability, it supports extended calibration intervals, reducing maintenance costs.

4. Common Models:
 

Friendly Reminder:The price of the new Chongqing Chuan Instrument Yokogawa EJA120E high-performance micro differential pressure transmitter mainly depends on the specific quotation after you select the model specifications of the Yokogawa EJA120E high-performance micro differential pressure transmitter. For online selection and quotation, please feel free to call for detailed inquiries.