2 Important Notices on Safety
2-5. Important information about explosion-proof
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2-5. Important information about explosion-proof
The detector is an explosion-proof product.
The following provides information about the explosion-proof structure. Understand the information in this
section thoroughly before using the detector.
Explosion-proof structure and class
The detector employs the following explosion-proof structure and class. Use the detector
according to the operating environment.
Explosion-proof structure
: Intrinsically safe explosion-proof structure
Explosion-proof class
: Ex ia IIC T4 Ga
Certificate number
: TC22666
Certification body
: Technology Institution of Industrial Safety
Applied standard
: Recommended Practices for Explosion-Protected Electrical
Installations in General Industries
JNIOSH-TR-46-1:2015
JNIOSH-TR-46-6:2015
Electrical parameter
Intrinsically safe circuit allowable voltage (
Ui
) :
28
V
Intrinsically safe circuit allowable current (
Ii
) :
93
mA
Intrinsically safe circuit allowable power (
Pi
) :
0.65
W
Internal capacitance (
Ci
) :
583
pF
Internal inductance (
Li
) :
Negligible
value
Backup power supply
1.5 VDC
Operating temperatures
: -20 - +50°C (*1)
Protective class of case
: IP20 (Water-proof: None/Dust-proof: Up to 12.5 mm foreign solid
material protected)
Insulation performance
: Meet JIS standard (between the power supply and case, 500
VAC, one minute) under the condition that the capacitor
connected to the terminal plate has been removed.
System
configuration
Make up the system as shown below.
Hazardous location
Non-hazardous location
Gas detector
Safety maintaining device
