Fluke 7103 - Hard Cutout; Alpha; Delta; Beta

7103 Micro-Bath User’s Guide
Controller Conguration
42
The calibration parameters R0, ALPHA, DELTA, and BETA characterize the
resistance-temperature relationship of the platinum control sensor. These pa rameters
may be adjusted by an experienced user to improve the accuracy of the calibrator.
Hard Cutout 9.8.3.1
This parameter is the temperature above which the unit shuts down automati cally.
The parameter is set at the factory to approximately 140°C and can be changed only
through the variable resistor. This parameter cannot be changed through the instrument
menu or the communications port.
R0 9.8.3.2
This probe parameter refers to the resistance of the control probe at 0°C. The value of
this parameter is set at the factory for best instrument accuracy.
ALPHA 9.8.3.3
This probe parameter refers to the average sensitivity of the probe between 0 and
100°C. The value of this parameter is set at the factory for best instrument accuracy.
DELTA 9.8.3.4
This probe parameter characterizes the curvature of the resistance-temperature
relationship of the sensor. The value of this parameter is set at the factory for best
instrument accuracy.
BETA 9.8.3.5
This probe parameter characterizes the low temperatures. The value of this pa rameter
is set at the factory for best instrument accuracy.
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