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Yokogawa 438 diaphragm sealed gauge pressure transmitter 4-20mA DC signal
Diaphragm Sealed Gauge Pressure Transmitter Yokogawa 438 Pressure Transmitter/4-20mA DC signal Specification: The EJA Series is available with BRAIN, HART, FOUNDATION TM fieldbus or PROFIBUS PA communication protocols Diaphragm seal is used to prevent process medium from entering directly into the pressure-sensing assembly of the pressure transmitter. It is connected to the transmitter using capillary filled with fill fluid. Models EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters can be used to measure liquid, gas or steam pressure. They output a 4 to 20 mA DC signal corresponding to the measured pressure.
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Specifiction Packing
  • The EJA Series is available with BRAIN, HART, FOUNDATION™ fieldbus or PROFIBUS PA communication protocols. Diaphragm Sealed Gauge Pressure Transmitters EJA438W/EJA438N A Capsule EJA438W B Capsule EJA438N B Capsule Range -0.1 to 3 MPa (-15 to 430 psi) -0.1 to 14 MPa (-15 to 2000 psi) -0.1 to 7 MPa (-15 to 1000 psi) Span 0.06 to 3 MPa (8.6 to 430 psi) 0.46 to 14 MPa (66 to 2000 psi) 0.46 to 7 MPa (66 to 1000 psi) Accuracy 0.2% 0.2% 0.2% Degrees of protection IP67, NEMA 4X, and JIS C0920 immersion proof Certificates FM, CENECEC ATEX, CSA, TIIS, 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 60 deg C (-40 to 140 deg F) (general use type) -30 to 60 deg C (-22 to 140 deg F) (with integral indicator) It must be within the fill fluid operating temprature range Process temperature -50 to 300 deg C (-58 to 572 deg F) It must be within the fill fluid operating temprature range Maximum working pressure Max. measurement range valve The working pressure must be within the flange rating. Mounting Transmitter: 2-inch pipe mounting Diaphragm seal: flange mounting Process flange size Flush type: 3-inch (80mm), 2-inch (50mm) Extended type: 4-inch (100mm), 3-inch (80mm) Diaphragm material SUS316L, Hastelloy C-276, Tantalum, Titanium Process flange material S25C, SUS304, SUS316 Housing Cast aluminum alloy or SUS316 equivalent stainless steel (optional)