Description / توضیحات
Ordering Information
Model EJA120E Differential pressure transmitter
Output signal -J 4 to 20 mA DC with digital communication (HART 5/HART 7 protocol)(1)
Measurement span (capsule) E 0.1 to 1 kPa (0.4 to 4 inH2O)
Capsule:
Hastelloy C-276(4) (Diaphragm)
F316L SST, 316L SST (Others)
Process connections 4 with 1/2 NPT female process connector
Bolts and nuts material G 316L SST
Installation •-9 Horizontal piping and left side high pressure
Amplifier housing 1 Cast aluminum alloy
Electrical connection C 1/2 NPT female, two electrical connections and a SUS316 blind plug
Integral indicator E Digital indicator with the range setting switch (push button)(5)
Mounting bracket J 316 SST 2-inch pipe mounting, flat type (for horizontal piping)
ATEX /KU22 Combined KF22, KS21 and ATEX Intrinsically safe Ex ic(6)(7)
[ATEX Intrinsically safe Ex ic]
Ui=30 V, Ci=27.6 nF, Li=0 µH
Material certificate(9) /M11 Cover flange, Process connector(10)
The “•” marks indicate the most typical selection for each specification.
HART 5 or HART 7 is selectable. Specify upon ordering.
Users must consider the characteristics of selected wetted parts material and the influence of process fluids. The use of inappropriate materials can result in the leakage of corrosive process fluids and cause injury to personnel and/or damage to plant facilities. It is also possible that the diaphragm itself can be damaged and that material from the broken diaphragm and the fill fluid can contaminate the user’s process fluids.
Be very careful with highly corrosive process fluids such as hydrochloric acid, sulfuric acid, hydrogen sulfide, sodium hypochlorite, and high-temperature steam (150°C [302°F] or above). Contact Yokogawa for detailed information of the wetted parts material.
Cast version of 316 SST. Equivalent to SCS14A.
Hastelloy C-276 or ASTM N10276.
Not applicable for output signal code F.
Applicable for Electrical connection code 2, 4, 7, 9, C and D.
Not applicable for output signal code Q.
Lower limit of ambient temperature is –15°C (5°F) when /HE is specified.
Material traceability certification, per EN 10204 3.1B.
Applicable for process connections codes 1, 2, 3, and 4.
