Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 11)

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IM 11B08A01-01E
 CAUTIONS WHEN USING EXPLOSION-PROTECTED INSTRUMENTS
The GC8000 is designed to protect against explosion.
When the analyzer is used in a hazardous area, observe the following precautions.
Since the applicable standard differs depending on the specifi cations of the analyzer to be used,
check the specifi cations of your analyzer.
 Type of explosion protection
To assure explosion protection, the GC8000 has a pressurized and fl ameproof enclosure,
meeting the following standards (fl ameproof enclosure is not provided in FM-Y):
Type X pressurization and Explosionproof for Class I, Division 1, Group B, C and D
(Described
as FM-X hereafter)
Type X and Y pressurization for Class I, Division 1, Group B, C & D
(Described
as FM-Y hereafter)
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.)
(ATEX)>
ATEX: Group II Category 2G, DEKRA 11ATEX0238 X *
Ex d px II B +H
2
T1 Gb (programmed-temperature oven 320°C max., isothermal oven 225°C
max., liquid-sample valve 250°C max.)
Ex d px II B + H
2
T2 Gb (programmed-temperature oven 225°C max., isothermal oven
225°C max., liquid-sample valve 225°C max.)
Ex d px II B + H
2
T3 Gb (programmed-temperature oven 145°C max., isothermal oven
145°C max., liquid-sample valve 145°C max.)
Ex d px II B + H
2
T4 Gb (programmed-temperature oven 95°C max., isothermal oven 95°C
max., liquid-sample valve 95°C max.)
* : The symbol “X” used to denote specifi c conditions of use
The symbol "X" is used to provide a means of identifying that essential information for the installation,
use, and maintenance of the equipment is contained within the certifi cate.
- Warning in the label refers you to read the instruction manual for an avoidance of static risk.
- The threaded type and size of the fl ameproof enclosure is only uses "M25x1.5".
That is the reason why no indication on the fl ameproof enclosure.
On the other hand, the threaded adapter has the indication of its own type and size.
- The gap between fl ameproof joints is different from the standard values of the fl ameproof
standard.
The joint dimensions of the fl ameproof enclosure differ from the minimum or maximum values
asa mentioned in the Ex d standard.
Since the modifi cation is not allowed, this manual gives out no detailed information.
- The instrument modifi cation or parts replacement by any person other than authorized
representative of Yokogawa Electric Corporation is prohibited and will void the fl ameproof
certifi cations.
- All externally powered input signals into the pressurized enclosure shall be isolated by external
relays controlled by the Ex px protection system(Ex px safety device).
2nd Edition : May 11, 2012-00