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GTC-200F
Instruction Manual
11.1. Selection of installation place (Data from Occupational Safety and Health regulations)
The place for installation of gas leakage detection alarm is as follows.
■ Surroundings of chemical equipment and accessory equipment with a risk of gas leakage such as compressor,
valve, reactor, piping connection part, etc. that are installed inside and outside buildings to deal with flammable
and toxic substances
■ Place with easy dwelling of gas around manufacturing equipment with ignition sources such as heating furnace, etc.
■ Around the connecting part for filling of flammable and toxic substances
■ Power substation, power distribution panel room, control room, etc. positioned within explosion-proof area
■ Other places with especially easy dwelling of gas
11.2. Selection of installation place(Data from regulations on safety management for high-pressure gas)
Gas detector for has leakage detection alarm should be installed as close as possible to leakage parts with a risk
of gas leakage. However, for the places with likelihood of dwelling of gas leaked from surroundings although direct
gas leakage is not expected, installation should be implemented at spots such as No.1 of the following list.
■ Gas leakage detection alarm installed outside a building shall be installed at a spot with dwelling likelihood of gas
by considering wind direction, wind velocity ,specific gravity of gas, etc.
■ Gas leakage detection alarm installed inside a building should be installed in the lower part inside the building
when specific gravity of the detection target gas is larger than that of air, while it should be installed near
ventilation port of the building or in the upper part inside the building when it is lighter than air.
■ Alarm of Gas leakage detection alarm should be installed at a place with installation of Gas detector and a place
of constant residence of workers
11.3. Notes upon installation
Positions that can be an electric obstacle such as rain water, etc. should be avoided for installation, and installation at
a place for easy operation is recommended since periodic maintenance and repair are. Since the places with vibration
or impact can affect output values, places with vibration or impact shall be avoided for installation, and installation shall
be such that the sensor unit is facing the direction of gravity.
■ The present instrument shall belong to the GROUP aimed at gas, vapor of general business places and chemical
plants as a pressure-resistant, explosion-proof structure, and can be used for dangerous places of ZONE 1(ONE)
-type 1 and ZONE 2(TWO)-type 2.
■ Allowed temperatures belong to less than 85℃ corresponding to T6.
■ It shall be used in the range of -20℃ ~ 40℃ for ambient temperature
■ Installation altitude: Less than 1,000M above sea level
■ Relative humidity: 5% ~ 99%
■ Installation place: Outdoors and indoors
■ Explosion and ignition level of target gas or vapor: Ex d IIC T6Positions that can be an electric obstacle
■ When explosion-proof cable gland is used in cable lead-in port or metal cable conduit wiring construction is conducted,
cable conduit should be sealed to prevent moving of gas, etc. through cable conduit within 50mm or propagation of
flames upon explosion.
■ Upon connection of the present instrument and cable conduit, more than 5 threads should be made to be coupled.
■ Conduct operation under the conditions meeting other [Standards related to selection, installation and repair, etc. of
explosion-proof structure, electricity, machine, apparatus, wiring, etc. of business place].
■ For all materials used for cable lead-in such as CABLE GLAND and SEALING FITTING, etc. as well as materials used
for finishing of the unused lead-in unit, make sure to sue products having passed qualification!
11. Notes before installation
11. Notes before installation
[Figure 14. Pressure-resistant packing]
[Figure 15. Y Sealing Compound]
Cable
Cable
Inside
Inside
Outside
Outside
Lead-in unit connector
Lead-in unit connector
Charging compound
Cable-fixing device
Pipe for piping
Cable-fixing device
Sealing ring
Sealing
ring
Connector
Pipe for piping
Compressed
element
Connector for fixing
compressed element
