2 Important Notices on Safety
2-2. Warning cases
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2-2. Warning cases
WARNING
Power
supply
Before turning on the detector, always check that the voltage is properly applied.
Need of grounding circuit
Do not cut the grounding circuit inside or outside the detector or disconnect the wire from the
grounding terminal.
In both of the cases, the detector will be in danger.
Defects in protective functions
When seeming defects are found in the protective functions, such as protective grounding, do not
start the detector.
Before starting the detector, check the protective functions for defects.
Grounding
Zener
Barrier
Arrange A type grounding for Zener Barrier.
Operation in a gas
The detector employs the intrinsically safe explosion-proof structure (safety maintaining device
used separately).
It can be used in a location where a combustible gas, or steam is present; however, it should be
done carefully.
Consult RIKEN KEIKI before operating the detector in such a location.
External
connection
Before connecting the detector to the external control circuit, securely connect it to a protective
grounding circuit.
Handling
of
sensor
Do not disassemble the sensor unit because it contains electrolyte. If contact occurs, rinse the
area immediately with water.
Calibration
When performing calibration for the detector, be careful not to lack calibration gases by loosing
tubes.
Response to gas detection
When a gas is detected, it indicates a potentially dangerous situation. Take proper actions based
on your judgment.
Flow
rate
Without maintaining the appropriate flow rate, gas detection cannot be performed accurately and
this may lead to extreme danger.
Check the flow rate with the FLOW display on a regular basis.
