Sensors & Accessories
11
The LI-250 multiplies the current reading in microamps by
the multiplier.
Since the Calibration Multiplier is unique for each sensor, it
must be entered into the LI-250 each time the sensor is
changed or recalibrated.
NOTE: Always enter the Calibration Multiplier, not
the Calconstant. If the Calconstant is entered any data
collected will be erroneous.
For type 'SA' sensors purchased after September, 1985, the
calibration multiplier is given on the certificate of calibra-
tion, and is also attached to the sensor. An example of a
calibration label attached to a quantum sensor appears
below, which would contain the value of the multiplier, as
well as the serial number of the sensor, and the date of its
most recent calibration.
NOTE: Tcoff is a time coefficient that is used to convert
integrated 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-250.
MULT: XXX.XX
tcoff: 0.0036
Units:
µ
mol s-1 m-2 per
µ
A
SERIAL NO.
CAL DATE: DD/MM/YR
®
