Owner manual

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.