Do not allow excessive bending of the thermocouples. Cold working can lower the insulation resistance at certain points causing short circuits or decreased accuracy.
Use protection tubes for corrosive atmospheres.
Always inspect protection tubes when changing thermocouples. Things to look for include cracks, pinholes, contamination, or discoloration.
Do not locate the thermocouple too close to a heating element.
Record the life span and cause of failure for each thermocouple to help track down potential problems.
Never apply stress to platinum elements, the are fragile and will break easily at high temperatures.
