Grounded Thermocouple Probes - Items tagged as "Thermocouple"

Grounded Thermocouple Probes

A Grounded Thermocouple Probe has the thermocouple juction in firm Contact with the Inside Tip of the metal tube, sheath or mounted housing. Typically the 2 thermocouple wires forming the juction are welded to or part of the inside tip

Thermocouple Junction Probe Designs
  • Fast Thermal response and provides protection of thermocouple junction from servere temperature measurement environments
  • Grounded thermocouples are a very popular design although they can 
    experience Electromagnetic Interference (EMI) from motors, power supplies and other devices resulting in temperature measurement errors.
    • The metal sheath can be a potential antenna or conductor.
    • The temperature signal generated is a very small milivolt signal and is more susceptible to interference than a miliamp or other signal output.
  • If Electrical Interference is an potential issue in your temperature measurement application potential solutions include an ungrounded thermocouple juction design, a grounding wire connected the metal probe sheath, twisted shielded thermocouple lead wire, a RTD temperature sensor and other potentials solutions.
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