EJX910A DPharp Multivariable Transmitter for Liquid/Gas/Steam Flow MeasurementYokogawa Electric Corporation

EJX910A DPharp Multivariable Transmitter for Liquid/Gas/Steam Flow MeasurementYokogawa Electric Corporation
The EJX910A high-performance multivariable transmitter adopts a monocrystalline silicon resonant sensor, which can output measurements of differential pressure, static pressure, process temperature, and calculate mass flow rate. Supports multiple protocols such as HART, FOUNDATION fieldbus, and RS485 Modbus.
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Product Description

Product Introduction

The  EJX910A  high-performance multivariable transmitter adopts a monocrystalline silicon resonant sensor, which can output  measurements of differential pressure, static pressure, process temperature, and calculate mass flow rate. Supports  multiple protocols such as HART, FOUNDATION fieldbus, and RS485 Modbus.


Core Performance

The core of EJX910A lies in its monocrystalline silicon resonant sensor (DPharp). This technology can achieve multi  parameter measurement with one sensor, which not only has a compact structure, but also provides excellent measurement  accuracy and long-term stability.

  • Measurement accuracy: Differential pressure measurement accuracy can reach ± 0.04%, static pressure accuracy is ±      0.1%, and external temperature measurement accuracy is ± 0.5 ℃ (± 0.9 ℉);

  • Quality flow measurement: Through real-time full density compensation technology, high-precision quality flow      measurement of ± 1.0% can be achieved, and the quality flow accumulation function is built-in.

Main functional features

  1. Wide support for flow meters: Supports use with primary components such as orifice plates, nozzles, and Venturi      tubes. Under the HART 7 protocol, it can also support averaging tubes and conical flow meters;

  2. Flexible output and communication

    Supports multiple communication protocols such as HART, FOUNDATION fieldbus, and RS485 Modbus;

    The HART protocol type can simultaneously output 4-20mA analog signals and pulse signals for cumulative flow,      instantaneous flow, or alarm status;

  3. Advanced Diagnosis and Functionality: Equipped with software download and advanced diagnostic functions      (optional), and supporting multiple functional blocks, enhancing the system's configurability and      maintainability;

  4. High security and reliability

  • Passed TUV SIL 2/3 safety integrity level certification, suitable for safety instrumented systems;

  • The protection level is IP67, NEMA 4X, and it has multiple explosion-proof certifications such as FM, ATEX, CSA,      IECEx, etc., suitable for harsh industrial environments;


Measurement range:-10~10 kPa to -500~500 kPa
Process temperature:-200~800℃
Turndown ratio:Differential pressure 200:1, static pressure 25:1
Long-term stability:±0.1% URL / 10 years
Operating Temperature:-40°C ~ 70°C
Power supply:12 ~ 30 VDC
Protection:IP67
communication protocol:HART 5 / 7 (4~20mA + digital bidirectional)

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Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.