LumaSense Technologies INNOVA 1314i User Manual
Page 155
Chapter 12
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BE6030-13
1314i Photoacoustic Gas Monitor
LumaSense Technologies A/S
Page 155 of 199
have been completed the number (n) will also show 6 because the
results of the first and second measurements have been
overwritten by the 7
th
and 8
th
measurement results …and so on.
2. Let the Monitor continue measuring the zero gas until the
temperature in the cell is stable. Look at the print-out of the
average and standard deviation measurements for (1) the water-
vapour and (2) all the other filters. When all these values have
stabilised calibration measurements, do not need to continue.
Continue to the next step.
3. Press
¿
.
This causes the following text to appear on the screen:
A: µ : 5.28 µV σ : 94 nV 6 38.4°C
PRESS ENTER WHEN RESULTS ARE STABLE
These results have been shown on the data-log print-out. If they
have stabilised continue to the next Step.
4. Repeat step 3 until the signals measured with all the filters have
been displayed, stabilised and been “accepted”.
The text CALCULATION. PLEASE WAIT appears on the screen.
The Monitor only uses the last six measurement results when
calculating any calibration factor. The concentration offset
factors calculated during zero-point calibration of the filters,
are related to the cell noise measured in the cell when each of the
filters is being used.
If any calibration data is uncertain or unacceptable an error
message (marked by an asterisk) will appear on the screen after
the calibration factors have been calculated. Whenever an asterisk
is shown on the screen further information about the condition of
the Monitor can be obtained by pressing INFO.
lists all the error messages connected with uncertain
calibration results and gives an explanation of their significance so
that the user can ascertain what action to take if such messages
are displayed after calibration.
12.7
Humidity-interference Calibrations – Stand-
alone Use
As previously mentioned, the humidity-interference calibration task is
not selective. This means that you cannot choose humidity-
interference calibration of a single filter in the carousel (for example,
when a new optical filter has been installed). When you perform a
humidity-interference calibration then all the installed filters will be
humidity-interference calibrated.