True Surface Thermocouple (TST)

Detail Watlow’s true surface thermocouple (TST) offers superior accuracy for measuring flat surface temperatures. This compact, highly accurate sensor isolates the thermocouple junction from ambient airflow. The TST typically achieves accuracy and repeatability between one to two percent (ΔT).
The TST, with its removable molded cover, fits into corners and other tight locations.
TSTs are easy to install with a variety of commonly used screw types.
Features & Benefits Isothermal measuring junction offers excellent thermal conductivity for the measuring junction
  Molded insulator isolates the isothermal measuring block from ambient airflow
  Compact, universal package easily fits into corners and other tight locations

specifications

Optical Res Accuracy Temperature Outside Diameter
    up to 400 up to 200 In Cm