Markes International C-HLD, Instructions For Use Manual, Page: 8 / 12

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QUI-1166
[3] First, check the stability at zero point.
& on the left will be blinking alternately when the detector becomes
stable. When the leak indicator is displayed without leakage, press ZERO/
ENTER key to adjust the zero balance. Under conditions such as fluctuation of
temperature or humidity, the detector needs zero point adjustment for both
the LED and LCD display.
Out of zero point ZERO adjust
[4] Place the sample probe tip near the gas connection to leak check.
One gas leak mark indicates there may or may not be gas leaks, especially on
a high range.
Two or more gas leak marks indicate there is a gas leak.
More than three gas leak marks are indicated, and the audible alarm sounds
when the buzzer function is ON.
[5] Turn off the detector after use.
Auto Power Off function ON: The detector is automatically turned off 10min.
after use.
Auto Power Off function OFF: Hold down FUNC/POWER key for 3 seconds to
turn the power OFF.
5. Storage
The detector should be kept in a clean/dry environment.