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7-3 Operation of the equipment
(1) When gas is detected
When gas concentration around the gas detector becomes high and the reading of the gas concentration
indicating bar graph exceeds the first preset alarm value, the first Alarm lamp blinks and an alarm sound (four
short beeps) is heard. When the reading exceeds the second preset alarm value, the second Alarm lamp blinks.
At the same time, the peak hold value blinks on the indicator.
(2) When the Buzzer Stop (BZ STOP) key is pressed
An alarm sound stops and the blinking Alarm lamp on the indicator unit lights up. Peak hold is still indicated in
this state.
When using an external alarm stop terminal, you can stop the buzzer using an external switch.
(3) When the Reset key is pressed
When the Reset key is pressed after the buzzer is stopped and the reading lowers to below the preset alarm
value, the Alarm lamp and peak hold go off.
When using an external reset terminal, you can reset using an external switch.
(4) In case of a failure
1) When the gas detector is out of order
The Power lamp lights up orange, an alarm sound (four short beeps) is heard, and message window displays
the type of the failure.
(Failure E: Sensor failure, H: Sensor heater wire failure, F: Flow decline)
2) When the Buzzer Stop (BZ STOP) key is pressed.
When the BZ STOP key is pressed, the alarm sound stops.
3) After the failure has been fixed
The Power lamp changes from orange to blinking green and the equipment goes into warming up state.
After warming up, it returns to its normal state.
(5) Equipment with a backup power source
1) In case of a power failure
Intermittent monitoring : The Backup lamp blinks red and battery starts supplying power to the equipment. It
continues monitoring gas leakage for 30 minutes,then it monitors intermittently. During the intermittent
monitoring mode, the Backup lamp blinks red and Power supply lamp and gas concentration indicator are
turned off.
Continuous monitoring :The Backup lamp blinks red and battery starts supplying power to the equipment so
that it can continue monitoring gas leakage.
2) When battery voltage lowers below the final voltage
The battery automatically stops discharging power and the equipment stops entirely.
3) When power is recovered
The Backup lamp goes off and the equipment returns to its normal operation. When power is recovered after
the equipment stops because of over discharge, the equipment starts operating from warming up state.
Reset does not work by pressing the Reset key before operating the BZ STOP key.
MEMO
