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Chapter 4
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4.7.3 Modified Interference Calibration Procedure
If a temperature controlled water bath is not available you can omit Water Vapour Gain
Calibration if you are confident the H2O Gain is within limits. If you omit this procedure, the Water Vapour Interference on Hydrocarbons procedure needs to be modified:
1. Perform the zero calibration of Hydrocarbon and Water vapour, as described in
section 4.7.2.
2. Ignore the Water Vapour Gain Calibration
3. Connect a source of pure dry nitrogen to the front panel gas inlet on the 1313
using a side-stream connection composed of Nafion tubing.
This is to humidify the nitrogen to the ambient humidity.
4. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
5. Press the Start button in the
box in order to start the calibration.
6. Calibration started is displayed in the status box.
7. Wait for the calibration to complete.
8. Perform the Carbon Dioxide Interference Calibration on Water Vapour and
Hydrocarbons (see section 4.7.2).
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BE6007-16
1313 Fermentation Monitor
LumaSense Technologies A/S
Instruction Manual
Page 60 of 116