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4.5 Open / close audible alarm
In detecting status, the initial setting of audible alarm is on. The more
gas leaks, the higher the audible alarm frequency will be. If the detecting
spot is too noisy, operator can use the earphone purchased by himself.
Press
button can open or close the audible alarm function.
4.6 Set present level as reference basis
The gas concentration of the detection field is in gradient distribution.
In order to find the gas leakage source precisely, during detecting, the user
can set the present level as reference basis by pressing
button.
4.7 Turn off the detector
Press both
and
buttons, the detector will be turned off.
5. Calibration
In order to assure the accuracy, it’s suggested to re-calibrate the
detector once every 6 months.
Calibration procedure:
Hold both
and
buttons to turn on the detector and the
detector will enters into calibration warm-up period. LED lights flash in
turns showing the warm-up period which will be about 3 minutes.
After warm-up finish, one green LED light will be lighted on, which
means the detector enters into zero calibration status. If the detector is in
clean air, press
button to save the zero point information. Then,
“
Power” light is in green color and 3 green LED lights flash. Zero
Color
Voltage
Green
Enough
Yellow
Not enough
Red
Low voltage, need charge