LumaSense Technologies INNOVA 1412i - Manual (Page 141)

Chapter 12
______________________________________________________________________
_____________________________________________________________________________
BE6025-15 1412i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 141 of 202
of the installed optical filter is the same as the UA number
appearing on the “Calibration Chart” for the optical filter in
position “A”.
Under the headings CALIBRATION DATA IN FILTER
BANK:1; CALIBRATION DATA IN FILTER BANK:2;
CALIBRATION DATA IN FILTER BANK:3; CALIBRATION
DATA IN FILTER BANK:4; and CALIBRATION DATA IN
FILTER BANK:5 check the following information:
b. Zero-point calibration performed: if a date appears here
(year-month-day) this is the last time the zero-point
calibration data in this filter bank was updated.
c. Concentration offset factor: if a number appears here this
means that this filter bank contains calibration data obtained
during a zero-point calibration of filter “A”.
d. Hum. Interference Calibration performed: if a date
appears here (year-month-day) this is the last time the
humidity-interference calibration data in this filter bank was
updated.
e. Humidity gain factor: if a number appears here this
means that this filter bank contains calibration data obtained
during the humidity-interference calibration of filter “A”.
f. Cross Interference Calibration performed: if a date
appears here (year-month-day) this is the last time cross
interference calibration data in this filter bank was updated.
g. “Gas name” interference on Filter B, C, D, E: if a number
appears after these headings this means that this filter bank
contains calibration data collected during cross-interference
calibration for this named gas.
h. If the following three conditions are found in any filter bank:
· Gas name: if the name which appears here is the same
as the name of the gas you intend to measure with filter
“A”;
· Span Calibration performed: if a date appears here;
and
· Conversion factor: a number appears here;
then this filter has been properly span calibrated with the
named gas. The filter bank containing this calibration data
is the filter bank, which has to be made active when filter
“A” is to measure this named gas.
i. However, if the Gas name: is given as “Gas UA number”
then the filter has only been checked to see that it is
functioning correctly, it has not been span calibrated to
measure the gas you wish to measure.