Gas Alarm - Cosmos XP-3118 Instruction Manual

Operating Procedure
3. Operating Procedure (continued from previous page)
〈AUTO range〉
When gas is detected, the digital numeric value and the bar graph level will increase
simultaneously.
If the bar graph level exceeds the full scale, the range will change from L to H automatically and
the scale of the bar graph will change. Furthermore, if the gas concentration drops, the range will
automatically return to L.
4. Turning Power OFF
CAUTION
When the POWER switch is pressed for approximately three seconds, the buzzer beeps, and the
Gas Detector will be turned OFF.

■ Gas Alarm

If the gas concentration reaches the alarm level, the gas alarm will
be turned ON. The alarm lamp will fl ash along with GAS1 or GAS2.
When the gas concentration drops below the alarm level, the gas
alarm will be automatically turned OFF.
Only the gas alarm buzzer will stop if the BZ.STOP switch is
pressed at the time of a gas alarm.
If the gas concentration reaches the alarm level again, the gas
alarm buzzer will sound again.
Note
If the pointer scales out when detecting high-concentration gas, OL will be
displayed.
High-concentration gas may have an adverse infl uence on the sensor.
Promptly introduce cleaned air into the Gas Detector. Turn OFF the Gas
Detector after checking that the gas concentration falls and the Gas
Detector is free of gas. The service range for oxygen is 25.1vol% to
50.0vol%. The Gas Detector will display OL if the concentration is 50.1vol%
or higher.
To turn OFF the Gas Detector, wait until the gas concentration drops in
clean air.
If the BZ.STOP switch is continuously pressed while the gas concentration screen
is displayed, the alarm point will be displayed for approximately three seconds, and
the preset alarm point can be checked.
− 10 −
The alarm lamp flashes.
Flashes
The detected gas corresponding to
GAS1 has reached the alarm level.