Riken Keiki TP-70DGII, Руководство по эксплуатации

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2. Important Notices on Safety 2-1. Danger cases
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2
2.
Important Notices on
Safety
2-1. Danger cases
2-2. Warning cases
DANGER
This is not an explosion-proof unit. Do not use the unit in place where combustible gases may exist.
WARNING
Power supply
Before turning on the gas detector, always check that the voltage is properly applied. Do not use an
unstable power supply because it may cause malfunctions.
Need of grounding circuit
Do not cut the grounding circuit or disconnect the wire from the grounding terminal.
Defects in protective functions
Before starting the gas detector, check the protective functions for defects. When seeming defects are
found in the protective functions, such as protective grounding, do not start the gas detector.
External connection
Before connecting the gas detector to a detection target or external control circuit, securely connect it to
a protective grounding circuit.
Tube
The gas detector is designed to draw gases under the atmospheric pressure. If excessive pressure is
applied to the sampling inlet and outlet (GAS IN, GAS OUT) of the gas detector, detected gases may be
leaked from its inside, thus leading to dangers. Be sure that excessive pressure is not applied to the
gas detector while used. Detected gases must be exhausted from the detected gas exhausting outlet
(GAS OUT) on the back of the gas detector to which an exhaust tube is connected, to a point regarded
as a safe place.