Riken Keiki GD-3EC, Technical Manual

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7. Maintenance 7-4 Performing calibration
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<When using the splash guard>
NOTE
 The calibration adapter is not required when using the splash guard.
 When using the splash guard, calibrate using the following wind speed:
Detection principle Wind speed
Non-dispersive infrared absorption type
(infrared type)
Max. 6 m/s
New ceramic type
Semiconductor type
Hot-wire semiconductor type
Electrochemical type Max. 1 m/s

If calibration is unsuccessful, fit the calibration adapter and calibrate again.

When calibrating adsorptive gas, fit the calibration adapter.

Use a flow rate of 0.5 L/min ±0.1 L/min when calibrating. Calibration accuracy may be reduced if
calibration is performed using a different flow rate.
<Using a gas sampling bag>
*The diagram illustrates the SD-3. The connection method is the same for the remote sensor head (GD-3).
Product (SD-3)
Flowmeter
Pump
P
Needle valve
Gas
sampling
bag
Splash guard