Test Probe Calibration; Calibrating A Single Probe; Stabilization And Accuracy; Multiple Probe Calibration - Fluke 6102 User Manual

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Test Probe Calibration

Note: This procedure is to be considered a general guideline. Each laboratory
should write their own procedure based on their equipment and their quality
program. Each procedure should be accompanied by an uncertainty analysis
also based on the laboratory's equipment and environment.
For optimum accuracy and stability, allow the calibrator to warm up for 25 minutes
after power-up and then allow adequate stabilization time after reach ing the set-point
temperature. After completing operation of the calibrator, al low the well to cool by
setting the temperature to 25°C for one-half hour before switching the power off.

Calibrating a Single Probe

Insert the probe to be calibrated into the well of the bath. Best results are ob tained
with the probe inserted to the full depth of the well. Once the probe is in serted into
the well, allow adequate stabilization time to allow the test probe temperature to settle
as described above. Once the probe has settled to the tem perature of the well, it may
be compared to the calibrator display temperature. The display temperature should be
stable to within 0.1°C degree for best results.
Caution: Never introduce any foreign material into the well.

Stabilization and Accuracy

The stabilization time of the Micro-Bath depends on the conditions and temper atures
involved. Typically the test well will be stable to 0.1°C within 10 min utes of reaching
the set-point temperature. Ultimate stability will be achieved 30 minutes after reaching
the set temperature.
Inserting a cold probe into a well requires another period of stabilizing depend ing on
the magnitude of the disturbance and the required accuracy. For exam ple, inserting a
.25 inch diameter room temperature probe at 200°C takes 5 minutes to be within 0.1°C
of its settled point and takes 10 minutes to achieve maximum stability.
Speeding up the calibration process can be accomplished by knowing how soon
to make the measurement. Typical measurements should be made at the desired
temperatures with the desired test probes to establish these times.

Multiple Probe Calibration

When calibrating multiple probes, place the probes equally spaced around the inside
edge of the probe basket.
Fluke-Direct
Test Probe Calibration
Calibrating a Single Probe
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