EJA440A High Static Gauge Pressure Transmitter
The high-performance Yokogawa EJA440A gauge pressure transmitter can be used to measure liquid, gas, or steam pressure.
The high performance gauge pressure transmitter model EJA440A can be used to measure liquid, gas, or steam pressure. It outputs a 4 to 20 mA DC signal corresponding to the measured gauge pressure.
The Yokogawa EJA440A gauge pressure transmitter Series is available with BRAIN, HART, FOUNDATION™ fieldbus or PROFIBUS PA communication protocols.
- Excellent performance and stability
The Yokogawa EJA440A gauge pressure transmitter series uses a silicon resonant sensor formed from monocrystal silicon, a perfect material which has no hysteresis in pressure or temperature changes. The sensor minimizes overpressure, temperature change, and static pressure effects, and thus offers unmatched long-term stability.
- Compact and light-weight design
Half the weight of conventional models thanks to miniaturization of the casing with the amplifier ASIC, pressure cell structure, and flange. The ASIC uses the minimum number of parts and improves the reliability of the amplifier.
- Fieldbus communication capability
Fieldbus is a digital two-way communication system. It is a revolutionary technology for configuring instrumentation control systems and a promising successor to the standard 4 to 20 mA analog communication used in most field instruments today.
Yokogawa EJA440A gauge pressure transmitter series offers two types of fieldbus models, FOUNDATION™ fieldbus Low Voltage Mode and PROFIBUS PA devices, which ensure interoperability between Yokogawa and other manufactures. As for software, the Yokogawa EJA440A gauge pressure transmitter series incorporates two AI function blocks that compute differential and static pressures to allow flexible configuration of instrumentation.
|YOKOGAWA EJA440A Gauge Pressure Transmitter|
|C Capsule||D Capsule|
|Range||-0.1 to 32 MPa|
(-15 to 4500 psi)
|-0.1 to 50 MPa|
(-15 to 7200 psi)
|Span||5 to 32 MPa|
(720 to 4500 psi)
|5 to 50 MPa|
(720 to 7200 psi)
|Degrees of protection||IP67, NEMA 4X, and JIS C0920 immersion proof|
|Certificates||FM, CENELEC ATEX, CSA, IECEx|
|Output||4 to 20 mA DC or FOUNDATION™ fieldbus or PROFIBUS PA 2-wire system with digital communication|
|Supply voltage||BRAIN and HART:10.5 to 42 V DC (10.5 to 30 V DC for Intrinsically safe type)|
Fieldbus:9 to 32 V DC (9 to 24 V DC for Entity model and 9 to 17.5 V DC for FISCO model)
|Ambient temperature||-40 to 85 deg C (-40 to 185 deg F) (general use type)|
-30 to 80 deg C (-22 to 176 deg F) (with integral indicator)
|Process temperature||-40 to 120 deg C (-40 to 248 deg F) (general use type)|
|Maximum overpressure||48 MPa (6750 psig)||60 MPa (8500 psig)|
|Mounting||2-inch pipe mounting|
|Wetted parts material||Capsule||SUS316L (Diaphragm material is Hastelloy C-276)|
|Housing||Cast aluminum alloy or SUS316 equivalent stainless steel (optional)|