Equipment - PR-21-S

PR-21 Series User Guide

Document code
IM-EN-PR21S
Revision
C
Language
English
Product
PR-21-S
Document type
User guide

The refractometer system for potentially explosive atmosphere locations consists of a modified refractometer sensor PR‑21‑…‑FM, a standard indicating transmitter DTR, a sensor connector PR‑8021‑FM and a sensor cable PR‑8230‑…. The connector has to be secured mechanically by the securing clamp.

Figure 1. Refractometer system PR‑21‑…‑FM

The FM‑certified sensors PR‑21‑S‑…‑FM are identified by the sensor nameplate. The indicating transmitter is a standard DTR.

Figure 2. FM nameplate