Cautions of using explosion-protection instruments, 1) kinds of explosion protection – Yokogawa GC1000 Mark II Process Gas Chromatograph User Manual
Page 8
<Toc> <Ind> <Rev>
<Introduction>
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IM 11B03A03-01E
3rd Edition : Aug. 23. 2006-00
●
CAUTIONS OF USING EXPLOSION-PROTECTION INSTRUMENTS
The GC1000 Process Gas Chromatographs are designed to protect against explosion.
When these analyzers are used in a hazardous area, observe the following precautions.
Since the applicable standard differs depending on the specifications of the analyzer to be
used, check the specifications of your analyzer.
(1) Kinds of explosion protection
To assure explosion protection, the GC1000 Process Gas Chromatographs have a pres-
surized and flameproof construction, or type X purging and explosionproof construction
meeting the following standards :
<GC1000D / GC1000S>
•
JIS Expd IIB + H2 T1 (programmed-temperature oven 320˚C max., isothermal oven
225˚C max., liquid-sample valve 250˚C max.)
•
JIS Expd IIB + H2 T2 (programmed-temperature oven 225˚C max., isothermal oven
225˚C max., liquid-sample valve 225˚C max.)
•
JIS Expd IIB + H2 T3 (programmed-temperature oven 145˚C max., isothermal oven
145˚C max., liquid-sample valve 145˚C max.)
•
JIS Expd IIB + H2 T4 (programmed-temperature oven 95˚C max., isothermal oven
95˚C max., liquid-sample valve 95˚C max.)
<GC1000W / GC1000C>
CENELEC (ATEX directive) certified : Group II Category 2G
•
EEx pd II B +H2 T1 (programmed-temperature oven 320
°
C max, isothermal oven
225
°
C max., liquid-sample valve 250
°
C max.)
•
EEx pd II B +H2 T2 (programmed-temperature oven 225
°
C max, isothermal oven
225
°
C max., liquid-sample valve 225
°
C max.)
•
EEx pd II B +H2 T3 (programmed-temperature oven 145
°
C max, isothermal oven
145
°
C max., liquid-sample valve 145
°
C max.)
•
EEx pd II B +H2 T4 (programmed-temperature oven 95
°
C max, isothermal oven 95
°
C
max., liquid-sample valve 95
°
C max.)
<GC1000T / GC1000E>
FM
Type X purging and Explosionproof for CLI, DIV1, GPS B, C & D, NEMA3R.
Type Y purging and Type X purging for CLI, DIV1, GPS.B, C & D, NEMA3R.
•
T1 (programmed-temperature oven 320˚C max., isothermal oven 225˚C max., liquid-
sample valve 250˚C max.)
•
T2 (programmed-temperature oven 225˚C max., isothermal oven 225˚C max., liquid-
sample valve 225˚C max.)
•
T3 (programmed-temperature oven 145˚C max., isothermal oven 145˚C max., liquid-
sample valve 145˚C max.)
•
T4 (programmed-temperature oven 95˚C max., isothermal oven 95˚C max., liquid-
sample valve 95˚C max.)