Understanding the certificate of calibration
Figure 2. For underwater quantum sensors (LI-192SA and LI-
193SA), the values required by the LI-250A are labeled as
For use with LI-COR handheld meters and loggers:
. Two values
are given: one for use in air, and another for use in water.
Older radiation sensors
For type ‘SA’ sensors manufactured between September
1985 and March 2015, the calibration multiplier is
attached to the sensor cable and provided on the cer-
tificate. The time coefficient (
tcoff
) is used to convert integ-
rated data to the proper units when using the LI-1000
Datalogger to log data with certain sensors. This value can
be ignored when using the LI-250A.
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