Vaisala K-PATENTS PR-23 Series, Instruction Manual, Page: 148 / 246

138 PR-23 instruction manual
9.11 Intrinsically safe refractometers PR-23-...-IA and PR-23-...-IF
Hazardous locations are places where a possibility of fire or explosion exists because
of flammable gases, vapors or fine dust.
Zone 0: An area in which an explosive gas-air mixture is continuously present
or present for long periods of time.
Zone 1: An area in which an explosive gas-air mixture is likely to occur in nor-
mal operation.
Intrinsically Safe Process Refractometer PR-23-...-IA/-IF can be used in hazardous lo-
cations in Zone 0 and Zone 1 areas.
The PR-23-...-IA refractometers have been certified by Eurofins Expert Services Oy un-
der 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) and under the IECEx scheme for Ex
ia IIC T4 Ga and Ex ia I Ma (T
amb
= -20 – +65°C) . The EU Type-examination Certifi-
cate 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) 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) . 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.
Note: Servicing of the intrinsically safe PR-23-...-IA/-IF refractometer is only allowed
for trained service personnel of Vaisala and its representatives. Servicing must be
done according to separate instructions defined by Vaisala and must be reported to
Vaisala.
9.11.1 Equipment
Intrinsically Safe Process Refractometer consists of: a modified refractometer sen-
sor PR-23-...-IA/-IF, an Indicating transmitter STR with single sensor connectivity, and
IS Isolator and cabling between the refractometer sensor and the transmitter (Fig-
ure 9.34).
The equipment is intrinsically safe only if all mounting instructions in Section 9.11.2
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.