Hazardous area
(up to Zone 2)
Safe Area
WIRING SEE WRG-342
Figure 114 Refractometer system PR‑23‑…‑AX/FM/CS/CX
The ATEX/FM/CSA approved sensors PR‑23‑…‑AX/FM/CS/CX are identified by the sensor
nameplate, see the following figure. The indicating transmitter is a standard DTR.
The approvals are valid for sensors PR‑23‑AC, PR‑23‑AP, PR‑23‑GC, PR‑23‑GP, PR‑23‑M,
PR‑23‑MS, PR‑23‑SD, PR‑23‑W and PR‑23‑RP.
Chapter 12 – PR‑23 process refractometers in potentially explosive atmosphere
217
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