Hazardous locations are places where a possibility of fire or explosion exists because of flammable gases, vapors or fine dust.
Zone0: An area in which an explosive gas-air mixture is continuously present or present for long periods of time.
Zone1: An area in which an explosive gas-air mixture is likely to occur in normal operation.
Intrinsically Safe Process Refractometer PR‑21‑…‑IA can be used in hazardous locations in Zone 0 and Zone 1 areas.
The PR‑21‑…‑IA refractometer has been certified by Eurofins Expert Services under the European ATEX directive 2014/34/EU for ATEX Ex II 1G / Ex ia IIC T4 Ga (Tamb = ‑20 … +65 °C) and under the IECEx scheme for Ex ia IIC T4 Ga (Tamb = ‑20 … +65 °C). The EU‑Type examination Certificate number is EESF 19 ATEX 057X and the IECEx Certificate number is IECEx EESF 19.0025X. These certifications cover the following Ex standards: EN 60079‑0:2012 / IEC 60079‑0:2011 and EN 60079‑11:2012 / IEC 60079‑11:2011.
| Only trained service personnel of Vaisala and its representatives are permitted to service the intrinsically safe PR‑21‑…‑IA refractometer. Servicing must be done according to separate instructions defined by Vaisala and must be reported to Vaisala. |