PST PST-UM-2010-EN-02, User Manual

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Minox i Oxygen Transmitter User Manual
10 ProcessSensing.com
This value, or the reading 20.9%, must be observed to confirm calibration is complete.
When calibration is complete, the Minox i LED will resume flashing at a steady pulse.
3.2 Air calibration
The following method of air calibration should only be performed on a Minox i 200 (containing
a % sensor).
Figure 9. Minox i indicator LED
1. Unfasten and remove the Minox i from your process, and leave it in an ambient air environ -
ment.
Ensure the environment has normal oxygen concentration, an independent portable oxy -
gen analyzer can be used to check this.
2. Observe the O
2
concentration on your oxygen analyzer display. When the concentration
has stabilized it should read 20.9 % volume O
2
.
This usually takes between five and ten minutes.
3. Place the MagTip on the Minox i main housing, adjacent to the indicator LED, as shown in
Figure 8
. The red indicator LED will begin to flash rapidly.
4. When calibration is complete, the indicator LED will resume flashing at a steady pulse.
5. Re-install your Minox i following the instructions "2.2.1 KF-40 flange and tri-clamp process
connections with dimensions" on page 5 or "2.2.2 Flow-through process connection with
dimensions" on page 6, depending on your process connection.