LumaSense Technologies 3434i SF6 Leak Detector - Manual (Page 151)

Chapter 12
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BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S
Page 151 of 191
Fig.12.9 Illustration of the calibration data stored in the filter banks
of filters “A” to “E” after a zero-point calibration task
12.6 Zero-point Calibration
To calculate the concentration offset factor for a filter (during a
zero-point calibration) it is necessary to have a humidity gain
factor for the filter, and vice versa. If a humidity gain factor is not
stored in each of the filter banks, which are active during a zero-
point calibration, then it is necessary to perform a combined zero-
point and humidity-interference calibration task. The set-up of this
combined task is discussed in section 12.11 .
If it is only a newly-installed optical filter which needs to be
calibrated, then the same procedure used for an individual filter must
be used, see section 12.5.1 . In this way you can protect your original
concentration offset factors.