2 Important Notices on Safety
2-5. Important information about explosion-proof
- 7 -
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
: ExiaIICT4X
Certificate number
: Under application
Certification body
: Technology Institution of Industrial Safety
Applied standard
: Recommended Practices for Explosion-Protected Electrical
Installations in General Industries
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
)
: 586 pF
Internal inductance (
Li
)
: Negligible value
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
