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7 Maintenance
7-3. Calibration method
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<Span Adjustment 2-2>
This is used to perform the span adjustment on the detector head (sensor).
(1) Select 2-2 from the menu screen.
(2) Press the TEST/SET key.
(3) Introduce the calibration gas.
(4) Press the TEST/SET key when the reading is stabilized.
* SET is unavailable below 10% of the full scale.
(5) When the reading starts blinking, adjust the gas concentration with the
▲
/
▼
key.
(6) Press the TEST/SET key.
(7) After CAL is displayed, gas adjustment is performed automatically.
(8) If the adjustment is successful, "PASS" appears and "2-2" returns automatically.
Success
Fail
Returns to "2-2"
automatically.
Return to "2-2".
Adjust value with
▲
/
▼
.
Introduce a gas and press SET
when reading is stabilized.