Watlow's MICROCOIL^TM, Radio Frequency Thermocouple Probe, Tapered Thermocouple Probe and True Surface Thermocouples all incorporate isothermal physical principles to achieve superior surface temperature measurement. The isothermal design provides accurate sensing because the areas of the sensor that are exposed to normal process variances are positioned outside the thermal gradient.

• Plastic injection molding machinery
• Food processing equipment
• Engine and turbine exhaust gas
• Semiconductor processing
• Heat treating and metals processing

• Medical equipment
• Aerospace industries
• Packaging equipment
• Test stands

Radio Frequency Thermocouple Probe (RF)
RF immersion sensors are designed to reduce transient 13.56 MHz signals from being transmitted on the sensor leads in plasma environments. This results in a more stable and accurate measurement of chuck temperature.

Tapered Thermocouple Probe
The Tapered Thermocouple Probe is designed to provide rapid temperature response in applications where the sensor is inserted in an electrostatic chuck, gas line or wherever a fast accurate temperature measurement needs to take place in a small area. Tool design using the Tapered Thermocouple Probe is miniaturized by the combination of tapered tip construction and a new mini-bayonet style fitting.

True Surface Thermocouple (TST)
TST is a surface sensor designed to reduce error in atmospheric applications where air currents can cause instability in temperature accuracy. A winner of Control Engineering’s 2000 Editor’s Choice Award, the TST achieves superior accuracy through a combination of isothermal design and shielding.