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2-2. Warning cases
WARNING
Sampling point pressure
•
The concentration meter is designed to draw gases under the atmospheric pressure. If
excessive pressure is applied to the gas inlet and outlet of the detector, measured gases may
leak out from its inside and may cause dangerous conditions. Be sure that excessive pressure
is not applied to the detector’s inlet or outlet during use.
Air calibration in atmosphere
•
Perform an air calibration in a fresh air environment. If interference gases or other gases exist,
the adjustment cannot be performed properly, thus leading to dangers when gas is present.
Response to gas alarm
•
A gas alarm is triggered by changes in temperature and humidity. In such a case, check the
atmosphere for freshness and perform air again in the measured atmosphere.
Example) If the detector is turned on in a room with a temperature of 20ºC and a humidity of
40% RH and taken outside (a temperature of 30ºC and a humidity of 60% RH), an alarm is
triggered by humidity changes. In such a case, perform air calibration outside and measure.
The detector performs air calibration automatically when it is turned on. Even in such a case,
check the atmosphere for freshness and perform air calibration again in the measured
atmosphere.
WARNING
Battery level check
•
Before use, check that there remains sufficient battery power. When the detector is not used for
a long period, the batteries may be exhausted. Never fail to replace them with new ones before
use.
•
If a low battery voltage alarm is triggered, gas detection cannot be conducted. If the alarm is
triggered during use, turn off the power and promptly replace the batteries in a safe area.
Others
•
Do not throw the detector into fire.
•
Do not wash the detector in a washing machine or ultrasonic cleaner, etc.
•
Do not block the buzzer sound opening. No alarm sound can be heard.
•
Do not remove the battery while the power is on.
