The Yokogawa EJX110A Differential Pressure Transmitter is a high-performance pressure transmitter designed for accurate differential pressure measurement in industrial process applications. It is suitable for measuring liquid, gas, and steam, and can also be applied to flow, liquid level, density, and pressure measurement.
At the core of the EJX110A is Yokogawa's DPharp single-crystal silicon resonant sensor. The digital sensor directly outputs a digital signal, avoiding an additional analog-to-digital conversion stage. The sensor measures differential pressure, static pressure, and sensor temperature from a single sensing element, allowing compensation for the effects of static pressure and temperature on differential pressure measurement.
The EJX110A provides a reference accuracy of ±0.04% of span, with an optional high-accuracy specification of ±0.025% of span. It has a fast 90 ms primary-variable response time, 200:1 rangeability, and ±0.1% of URL per 15 years long-term stability. The specified overpressure effect is ±0.03% of URL.
The transmitter can also measure static pressure as a secondary variable. Static pressure can be displayed on the integral indicator or monitored remotely through supported digital communication interfaces. Yokogawa also provides advanced diagnostics designed to help identify process and instrument abnormalities.
The EJX110A is available with several communication configurations, including 4–20 mA DC with BRAIN or HART, as well as FOUNDATION Fieldbus and PROFIBUS PA versions. Remote setup, diagnostics, and communication capabilities support convenient commissioning and maintenance in industrial instrumentation systems.
The transmitter uses IEC 61518 standard process connection dimensions and a universal mounting concept, helping simplify installation and replacement across different process applications.
Key Features
- High-performance differential pressure transmitter
- Yokogawa DPharp digital sensor technology
- Suitable for liquid, gas, and steam
- Applications for flow, level, density, and pressure measurement
- Reference accuracy of ±0.04% of span
- Optional high-accuracy specification of ±0.025% of span
- Fast 90 ms response time
- 200:1 rangeability
- Long-term stability of ±0.1% of URL per 15 years
- Overpressure effect of ±0.03% of URL
- Simultaneous measurement of differential pressure and static pressure
- Dynamic compensation for static pressure and sensor temperature effects
- Advanced multi-sensing diagnostics
- Remote setup and configuration
- Multiple communication options including HART, BRAIN, FOUNDATION Fieldbus, and PROFIBUS PA
- IEC 61518 standard process connection dimensions
- Universal mounting design
- Integral indicator option
- SIL 2 certification for standard configurations except Fieldbus and PROFIBUS types
Measurement Range
Depending on the selected capsule, the EJX110A supports differential pressure spans from low-pressure measurement through high-pressure applications. The available capsule ranges include:
- F Capsule: 0.1 to 5 kPa span
- L Capsule: 0.1 to 10 kPa span
- M Capsule: 0.5 to 100 kPa span
- H Capsule: 2.5 to 500 kPa span
- V Capsule: 0.07 to 14 MPa span
The exact range depends on the selected capsule, wetted materials, and configuration.
Typical Applications
- Differential pressure measurement
- Flow measurement
- Liquid level measurement
- Density measurement
- Process pressure monitoring
- Steam flow measurement
- Gas and liquid flow measurement
- Filter differential pressure monitoring
- Pump and equipment monitoring
- Oil and gas processing
- Chemical and petrochemical plants
- Power generation
- Water and wastewater treatment
- Drilling and wellhead applications
- FPSO and offshore process facilities
