Intrinsically Safe Mounting - Vaisala PR-23 Series User Manual

WARNING!
made of PTFE in sensor heads. These parts are subject to electrostatic hazard. The
refractometer models PR‑23‑M, PR‑23‑MS and PR‑23‑W shall only be used for
measuring liquids with high conductivity (> 10000 pS/m) in the presence of hazardous
atmospheres.
WARNING!
to electrostatic hazard and therefore the cleaning shall be done only with a damp cloth
in the presence of hazardous atmospheres.
10.10.2 Intrinsically safe mounting
Choose the mounting location of the sensor, the isolator/barrier unit and the indicating
transmitter so that they are protected from sudden impact and friction.
CAUTION!
immediately and have the system checked by trained Vaisala service personnel before it
is used again.
The following figures describe the electrical connections for PR‑23‑...‑IA/‑CI and the
electrical connections for PR‑23‑...‑IF.
The refractometer models PR‑23‑M, PR‑23‑MS and PR‑23‑W contain parts
The painted surface of the enclosure of PR‑23‑MS refractometer is subject
If any of the system parts are affected by a sudden impact, power off
Chapter 10 – Sensor specifications
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