0.250″ (6.35mm), 0.188″ (4.7625mm), and 0.125″ (3.175mm) sheath diameters. General-purpose direct immersion thermocouple. Hazardous ratings are available.

A direct immersion-style thermocouple that features a 0.50″ NPT process connection and 0.50″ NPT instrument connection.  The 0.250″ diameter stem is standard with an optional 0.188″ and 0.125″  diameters available.  Pressure rated to 3000 psi. Available with ratings for use in hazardous atmospheres.  Single and dual sensors with special limits of error accuracy.

Series 100 Standard Spec. Sheet  


Sensor typeThermocouple (Special Limits)
Temperature range-200°C to 1260°C (-328°F to 2300°F)
Sensor styleDirect immersion
Sheath diameter0.125", 0.188", 0.250"
Immersion depthFixed
Process connection 1/2" NPT
Head connectionNPT
Spring loaded for thermowellNo
Wire terminationHead
Hazardous RatingsOptional
Configure Part Application Notes