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Features :
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.The models EJA438W and EJA438N feature remote setup
and monitoring through communications with the modelBT200/100 BRAIN TERMINAL, CENTUM CS/XL system
etc.
Specifications
*1: Measurement range is within the flange rating.
Output Signal “”:
4 to 20 mA DC, 2-wire system with digital communication
Failure Alarm:
Output status at CPU failure and hardware error;
Up-scale: 110%, 21.6 mA DC or more(standard)
Down-scale: -5%, 3.2 mA DC or less
-2.5%, 3.6 mA DC or less (Optional code /F1)
Note: Applicable for Output signal code D and E
Supply Voltage “”:
10.5 to 42 V DC for general use and flameproof type
10.5 to 32 V DC for lightning protector (Optional code /A)
10.5 to 30 V DC for intrinsically safe, Type n,
nonincendive, or non-sparking type
10.5 to 28 V DC for TIIS intrinsically safe type
Conditions of Communication Line “”:
Power supply voltage;
16.4 to 42 V DC
Load resistance; See Figure 1.
Note: In case of an intrinsically safe transmitter, external
load resistance includes safety barrier resistance.
Communication distance;
2 km, when CEV polyethylene-insulated
PVC-sheathed control cables are used.
Note: Communication distance varies depends on kind of
cable.
Technical parameters :
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