RKI Instruments SD-705EC - Manual (Page 23)

PT2E-1140
⑤ Operate the pump and adjust flowmeter at 1.5l/min.
⑥ When the calibration gas is introduced into the sensor, the indication of the indicator
rises. If the indication is not equal to the concentration value of calibration gas in 2
minutes after start of introduction, press the control key to the UP switch▲ or
DOWN switch▼ to allow the indication to match to the calibration gas concentration.
⑦ After adjustment, press SET switch● to decide.
SPAN light is changed from flickering to lighting, indication value on LCD is changed
from flickering to lighting and indicating that SPAN adjustment is completed.
Gas sampling bag
Gas bag for exhaust.
⑧ Upon completion of the span adjustment, remove the sampling bag from the IN side of
the gas check adaptor and press the control key to MAINTENANCE switch●.
Then, proceed to the zero adjustment again.
If the reading cannot be adjusted to the calibration gas concentration, sensor life will
be over. Put off the power switch and contact with our authorized agent.
(It is recommendable to replace the sensor every one year). For sensor replacement,
refer to “4-8 Sensor Replacement Method.”
Confirm that the replacement sensor is the same type as described
in the sensor type seal sticked on the detector.
！ CAUTION
Make zero and span adjustments again after sensor replacement.
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