Internal Calibrations Page 8-
Viewing Previous Calibrations
When an internal calibration is performed and saved, it is saved
to the dynamic parameters file and also appended to the
calibration history file for that device on the internal SD Card.
The text file will contain a history of all internal calibrations
for each MFC, the ozone generator and the photometer in a tabular
format that can be read by any text editor or imported into
Excel. For example, the contents of a sample ozone generator
calibration history contained in O3GENCAL.TXT is shown below:
Ozone Generator Calibration History
Date Time Flow Press. A B C Correl
-------- ------ ------ ------ ------ ------ ------ ------
05/01/12 16:32 5.000 742 12.7 1.234 0 .99986
1 2 3 4 5 6 ... 20
------ ------ ------ ------ ------ ------ ------
Control V 0.200 0.400 0.600 0.800 1.000
Monitor V 0.201 0.402 0.602 0.803 1.003
Actual PPB 57.3 175.4 304.1 425.2 545.1
Date Time Flow Pres A B C Correl
-------- ------ ------ ------ ------ ------ ------ ------
06/01/12 09:15 5.000 739 13.1 1.243 0 .99989
1 2 3 4 5 6 ... 20
------ ------ ------ ------ ------ ------ ------
Control V 0.200 0.400 0.600 0.800 1.000
Monitor V 0.201 0.402 0.602 0.803 1.003
Actual PPB 55.4 174.9 301.5 421.0 540.7
Date Time Flow Pres A B C Correl
-------- ------ ------ ------ ------ ------ ------ ------
07/01/12 14:27 5.000 747 10.4 1.257 0 .99984
1 2 3 4 5 6 ... 20
------ ------ ------ ------ ------ ------ ------
Control V 0.200 0.400 0.600 0.800 1.000
Monitor V 0.201 0.402 0.602 0.803 1.003
Actual PPB 53.8 173.3 298.0 417.6 516.2
The following calibration files may be found on the SD Card,
depending upon the installed options:
DILUCAL.TXT – Diluent MFC Calibrations
SRC1CAL.TXT – Source 1 MFC Cal
SRC2CAL.TXT – Source 2 MFC Cal
O3GENCAL.TXT – The ozone generator calibration
PHOTOCAL.TXT – The photometer calibration
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