PST PST-UM-2010-EN-02, Руководство пользователя

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Minox i Oxygen Transmitter User Manual
8 ProcessSensing.com
3 Calibration
NOTE: Calibration should be carried out by an appropriately trained or suitably qualified per -
son.
The oxygen sensor output will decrease over time, and periodic calibration will be required. This
is a non-intrusive procedure, achieved by using the MagTip one-touch calibration tool included
with your Minox i.
Calibration cycles for the Minox i depend on the application, the applied gases, and the sensor
type. They can be carried out in-situ or after safely removing the oxygen transmitter from your
process in a bench test.
NOTE: For optimal calibration, the atmosphere surrounding the sensor must be ambient air
(20.9 % volume O
2
) with no contaminants present. This can be achieved using an oxygen ana -
lyzer or by flushing the system with clean, oil-free compressed air.
The Minox i 100 (ppm) must be calibrated in a controlled environment. Calibrating the
Minox i 100 in ambient air will significantly reduce sensor life.
When the MagTip tool is applied, the indicator LED will flash six times in rapid succession. This
confirms calibration is in progress.
During normal operation, the indicator LED will flash once every two seconds. This slower flash
confirms Minox i is powered up and operational.
3.1 In-situ
3.1.1 Minox i 100 (ppm) / 200 (%)
Please see above before proceeding.
1. Apply the calibration gas (20.9 % volume O
2
) for a minimum of 15 minutes.
The pressure flow should replicate that applied to the Minox i during normal operation.