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Yokogawa EJA440A Gauge Pressure Transmitter

Pressure Transmitter

Yokogawa EJA440A Gauge Pressure Transmitter

Specifications

EJA440A Gauge Pressure Transmitter
C Capsule
Range -0.1 to 32 MPa
(-15 to 4500 psi)
Span 5 to 32 MPa
(720 to 4500 psi)
Accuracy ±0.12%
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)
Mounting 2-inch pipe mounting
Wetted parts material Capsule SUS316L (Diaphragm material is Hastelloy C-276)
Cover flange SUS316
Housing Cast aluminum alloy or SUS316 equivalent stainless steel (optional)

Pressure Transmitter

Yokogawa EJA440A Gauge Pressure Transmitter

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.
Model EJA440A also features remote setup and monitoring through communications with the BRAIN™ terminal and CENTUM CS™ or XL™ or HART® 275 host.

 

Features:

  • Excellent performance and stability

The EJA series uses a 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.

 

EJA series offers two types of fieldbus models, FOUNDATION fieldbus Low Voltage Mode and PROFIBUS PA devices, which ensure interoperability between and other manufactures. As for software, the EJA series incorporates two AI function blocks that compute differential and static pressures to allow flexible configuration of instrumentation.