AM1960/1950 Standard Platinum Resistance Thermometer User’s Guide
Rev. 201609V3
8/10
5 Troubleshooting
5.1 Troubleshooting
If the SPRT functions abnormally, it could be caused by several
possible problem conditions that are described in this section. Try the
solutions recommended and if the problems are still not solved,
contact manufacture for warranty or repair service. Be sure to have the
model number and serial number of your SPRT available.
5.2 Problem Causes and Solutions
a.
R0/Rtpw becomes higher significantly. This is likely caused by
mechanical shocks. The SPRT should be annealed to release the
stress of platinum wires and to recover R0/Rtpw value. Measure
R0/Rtpw of the SPRT after annealing to verify.
b.
R0/Rtpw unstable during the measurement. This is likely caused
either by bad connections or sensor coils short. Check the
connections first and if the connections are good, the SPRT may
be damaged.
