7 Maintenance
7-3. Calibration method
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7-3. Calibration method
Perform calibration on the detector head (sensor) connected to the indicator in each mode (zero adjustment
mode and span adjustment mode) using the calibration gas.
Perform calibration using the calibration gas.
Zero adjustment gas (collected in a gas sampling
bag)
Calibration gas (collected in a gas sampling bag)
Gas sampling bag for exhaust gas
* When a diffusion type detector is connected, a pump is
required.
<Zero Adjustment 2-1>
This is used to perform the zero adjustment on the detector head (sensor).
(1) Select 2-1 from the menu screen.
(2) Press the TEST/SET key.
(3) After CAL is displayed, zero adjustment is performed automatically.
(4) If the adjustment is successful, "PASS" appears and "2-1" returns automatically.
* "FAIL" appears when the adjustment fails.
WARNING
Perform zero adjustment using the zero adjustment gas or in a place where the surrounding air is
fresh.
If interference gases exist, the adjustment cannot be performed properly, thus leading to dangers
when the gas leaks.
WARNING
After the adjustment is completed, never
fail to return to the detection mode.
Success
Fail
Returns to "2-1"
automatically.
Return to "2-1".
