LumaSense Technologies INNOVA 1316A-2 - Manual (Page 55)

Chapter 4
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BE6021-11 1316A-2 Multi Gas Monitor LumaSense Technologies A/S
Instruction Manual Page 55 of 97
Purpose
Zero calibration compensates for conditions that affect gas concentration
measurement. Examples of these conditions are as follows:
Changes in ambient temperature.
Short-term sample cell contamination caused by inadequate particle
filtering.
Long-term sample cell contamination caused by deposits on the sample
cell wall or windows.
Zero calibration execution time is typically 30 to 45 seconds, including a
purge time that depends on the pneumatics configuration and a fixed
calibration time of 20 seconds. The process will take longer under the
following conditions:
1.
Extended Purge time ( PT) is used.
Purge time ( PT) can be extended . Pull down the Bench Command menu
select Zero/O
2
Change the PT value).
Select the Zero/ O2 Span Calibration.
The following window is displayed.