Riken Keiki GD-84D-EX Series, Руководство по эксплуатации

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7. Maintenance 7-5 Performing calibration
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7-5 Performing calibration
Before performing calibration, prepare a gas sampling bag with the calibration gas and another gas
sampling bag for the exhaust gas.
7-5-1 Running zero calibration
Correct zero calibration is required for accurate measurements of gas concentrations.
Zero calibration is essential for accurate measurements.
Zero calibration can be performed separately for each sensor or for all sensors at the same time.
WARNING

When zero calibration is performed in the atmosphere, check the atmosphere is free from
contaminants before starting. Performing zero calibration in the presence of interference gases will
mean calibration will not be performed correctly, and is a safety hazard in the event of an actual gas
leak.
CAUTION

To perform zero calibration, introduce the gas for zero calibration, then wait for the reading to
stabilize.

Perform zero calibration with the gas for zero calibration. If you introduce the wrong gas, depending
on the sensor, indication accuracy and overall response may deteriorate.
1 In maintenance mode, press the ▲ key or ▼ key to
select [2- 1 ZERO], then press the TEST/SET key.
2 Press the ▲ key or ▼ key to select the sensor to
be zero calibrated.
Press the ▲ key or ▼ key repeatedly to cycle through the
following settings: [A1]
⇔
[A2]
⇔
[B1]
⇔
[B2]
⇔
Select all.
[----] for the selected sensor blinks.
3 Connect the calibration gas to this product.
Connect the zero gas sampling bag and gas sampling
bag for exhaust gas to the product. (Refer to
‘7-5-3 Connecting the calibration gas’.)
When performing zero calibration for each sensor, switch
the flow passage in the chamber switching unit to the
selected sensor.
4 Press the TEST/SET key to confirm the sensor to be
calibrated.
When all are selected When [A1] is selected