The intrinsically safe process refractometer consists of the following:
- A modified refractometer sensor PR‑23‑…‑IA/‑IF/‑CI/‑JI/‑RI
- An indicating transmitter STR with single sensor connectivity
- IS isolator and cabling between the refractometer sensor and the transmitter
The equipment is intrinsically safe only if all mounting instructions in Intrinsically safe mounting are followed. If the instrument has been in any way damaged during transportation, return it to your nearest Vaisala service point for checkup before installation. Never install a damaged instrument into the process line.
The intrinsically safe sensor PR‑23‑…‑IA/‑IF/‑CI/‑JI/‑RI is identified by the nameplate, see the following figure. The Indicating transmitter is of model STR, for single sensor connection.