LumaSense Technologies INNOVA 1314i - Manual (Page 171)

Chapter 12
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BE6030-13 1314i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 171 of 199
interference from water vapour. This demands that the zero-gas you
use during the zero-point calibration of the filter must be perfectly
dry.
12.10.1 Setting-up a Zero-point Calibration of the Water-
vapour Filter
If you wish to zero-point calibrate the water-vapour filter you must
zero-point calibrate all the other installed optical filters. The
concentration offset factors calculated during zero-point
calibration of the filter “A” to “E” will be stored in the filter banks,
(those active during calibration). Check, therefore, that you make
the relevant filter banks active for these filters before calibrating
them. This is discussed in more detail in section 12.3.3.
The procedure for setting-up a zero-point calibration of the water-
vapour filter is as follows:
1. Press Measure S3 S3 S1 then the following text will be
displayed:
PERFORM ZERO-POINT CALIBRATION ?
NO YES
2. Follow the set-up of a zero-point calibration of the water-vapour
filter by following the black arrows in the schematic diagram
shown in Fig.12.19 .
The following text will appear:
ZERO-POINT CALIB. CONNECT CLEAN, WET AIR
AND PRESS ENTER WHEN READY