Intrinsically safe refractometers PR‑23‑…‑IA, PR‑23‑…‑IF, PR‑23‑…‑CI, PR‑23‑…‑JI and PR‑23‑…‑RI - PR-23 - PR-23-AC - PR-23-AP - PR-23-GC - PR-23-GP - PR-23-M - PR-23-RP - PR-23-SD - PR-23-W

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‑23‑…‑IA/-IF/‑CI/‑JI/‑RI can be used in hazardous locations in Zone 0 and Zone 1 areas.

The PR‑23‑…‑IA refractometers have been certified by Eurofins Expert Services Oy under the European ATEX directive 2014/34/EU for ATEX Ex II 1G and Ex I M1 / Ex ia IIC T4 Ga and Ex ia I Ma, T_amb = −20 … +65 °C (−4 … +149 °F) and under the IECEx scheme for Ex ia IIC T4 Ga and Ex ia I Ma, T_amb = −20 … +65 °C (−4 … +149 °F). The EU Type-examination Certificate number is EESF 19 ATEX 028X and the IECEx Certificate number is IECEx EESF 19.0010X. These certifications cover the following Ex standards: EN 60079-0:2012 / IEC 60079-0:2011 and EN 60079-11:2012 / IEC 60079-11:2011.

The PR-23‑…‑IF refractometer is certified by FM under the United States standards for IS/I/1/ABCD/T4 and I/0/AEx ia/IIC/T4, T_amb = −20 … +45 °C (−4 … +113 °F). The certificate ID Number is 3036400. This certification covers the following US standards: class 3600 1998, class 3610:2007, class 3810:2005, ANSI/ISA-12.00.01:1999, ANSI/ISA‑12.02.01:2002, ANSI/ISA-82.02.01:2004, ANSI/NEMA 250:1991 and ANSI/IEC 60529:2004.

The PR‑23‑…‑IF refractometer is certified by FM under the Canadian standards for IS/I/1/ABCD/T4 and I/0/Ex ia/IIC/T4, T_amb = −20 … +45 °C (−4 … +113 °F). The certificate ID Number is 3036400C. This certification covers the following Canadian standards: CSA C22.2 No. 94:1999, CSA C22.2 No. 142:2004, CSA C22.2 No. 157:2006, CSA C22.2 No. 60529:2005, CSA C22.2 No. 61010.1-1:2004, CSA E60079-0:2007 and CSA E60079-11:2002.

The PR‑23-‑…‑CI refractometer is certified by Nepsi under Chinese standards under the IECEx scheme for Ex ia IIC T4 Ga. The certificate number is GYJ19.1133X. This certification covers the following Ex standards: GB 3836.1-2010, GB 3836.4-2010 and GB 3836.20-2010.

The PR‑23‑…‑JI refractometer is certified by Eurofins E&E CML Ltd under Japanese standards under the IECEx scheme for Ex ia IIC T4 Ga, Tamb = −20 … +65 °C (−4 … +149 °F). The Certificate number is CML 22JPN2014X. The certification covers the following Ex standards: JNIOSH‑TR‑46‑1:2020 and JNIOSH‑TR‑46‑6:2015.

The PR‑23‑…‑RI refractometer is certified by LLC Certification Center VELES under Russian standards for PO Ex ia I Ma X and 0Ex ia IIC T4 Ga X, Tamb = −20 … +65 °C (−4 … +149 °F). The Certificate number is ЕАЭС RU С-FI.AД07.В.01949/20. The certification covers the following Russian standards: GOST 31610.0-2014 (IEC 60079-0:2011) and GOST 31610.11-2012 (IEC 60079-11:2006).