Gas Detection (Australia) Pty Ltd Page 43 of 44
M-GDA-3000 Rev 1
13.3. Precaution before installation
Rainwater shall be avoided because it can be an electrical hindrance, and accessibility should
be considered for periodic maintenance before installation. Vibration or shock shall be avoided
since it may affect the output value, and the sensor shall face the direction of gravity when
installed.
This device has high pressure explosion-proof structure; belongs to GROUP II targeting gas
and steam from general workplaces and chemical plants; and can be used in hazardous
places of ZONE 1 (ONE)
–class 1 and ZONE 2 (TWO) –class 2.
Allowable temperature belongs to 85
℃
or lowe
r, which corresponds to T6.
The ambient temperature shall be in the range of -20
℃
~ 60
℃
.
Installation elevation: less than 1,000 M above sea level
Relative Humidity: 5-99%
Installation place: indoors or outdoors
Explosive ignition temperature of the gases or vapors used: Ex d IIC T6
The wire conduit shall be sealed to prevent the gas moving or the explosion flame
propagation through the conduit under 45cm when the explosion-proof cable gland is used
at the cable inlet or when metal conduit is used in wiring works.
At least 5 screw threads must be used for connection of this device and the conduit.
Other standards should be met in this work such as: [Standards on the selection, installation
and maintenance of wiring for workplace explosion-proof structural electrical mechanism.
Only qualified materials shall be used in cable entry including CABLE GLAND and SEALING
FITTING; and used in the closure of unused incoming part.
[Figure 14. Pressure packing type ]
[Figure 15. Y Sealing Compound ]
