Probe Insertion And Removal Procedure - Fluke 9190A Operator's Manual

Probe Insertion and Removal Procedure

To prevent possible damage to probes, make sure all probes
put into the furnace are rated for the temperature range used in
the calibration procedure.
Use a metal or ceramic fiber surface or container is used to set hot probes
on.
A solid (unstirred) mass, as in a furnace, can have heat loss through the
probe stem. The loss changes between probes and temperatures.
For the best stable temperature and minimum gradient, put sample probes into the full
depth of the well. Variation on equipment, probe dimension, and configuration can have
an effect on temperature stability and gradients. At higher temperatures, temperature
stability and gradients between test wells are equivalent. But the length of time for the
wells to become stable is much longer.
Temperature changes at lower temperatures are slow. This is because high integration
values are necessary to keep the controller stable (1,200 seconds) at the lower
temperatures.
 Caution
Note
RTD Probe
Figure 2-9. Probe Insertion
2
Operation
Operation
gzs043.eps
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