Appendix A. Glossary and
abbreviations
Term Definition
CCD Charge Couple Device, sensor optical element.
CORE, CORE Optics Compact Optical Rigid Element: All measuring components are in one solid
module, the CORE (Optics) module.
DTR Indicating transmitter DTR, Dual sensor indicating transmitter of a PR‑23
refractometer system.
LCD Liquid Crystal Display, used as transmitter display.
LED Light Emitting Diode, the light source in a PR‑23 refractometer sensor.
n
D
Refractive index (of a liquid), see Principle of measurement (page 258).
Sensor Code ‑AC 3‑A approved, compact model
Sensor Code ‑AP 3‑A approved, probe model
Sensor Code ‑GP General purpose, probe model
Sensor Code ‑M Teflon body refractometer for chemically aggressive liquids in small pipes
Sensor Code ‑MS Teflon body refractometer for semiconductor liquid chemical processes
Sensor Code ‑SD Safe‑Drive sensor for the Safe‑Drive system for safe sensor insertion and removal
Sensor Code ‑W Saunders body refractometer for chemically aggressive liquids in large pipes
Sensor Code ‑…‑AX ATEX approved sensor, modified for use in potentially explosive atmosphere
Sensor Code ‑…‑CS CS approved sensor, modified for use in potentially explosive atmosphere
Sensor Code ‑…‑FM FM approved sensor, modified for use in potentially explosive atmosphere
Sensor Code ‑…‑CX Nepsi certified sensor, modified for use in potentially explosive atmosphere
Sensor Code ‑…‑IA ATEX approved sensor for hazardous locations in Zone 0 and Zone 1
Sensor Code ‑…‑IF FM approved sensor for hazardous locations in Zone 0 and Zone 1
Sensor Code ‑…‑CI Nepsi certified sensor for hazardous locations in Zone 0 and Zone 1
STR Indicating transmitter STR, Single sensor indicating transmitter for hazardous
locations and divert control systems.
Appendix A – Glossary and abbreviations
257
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