TPK-02A, TPK-02B ,TPK-04L K Type Temperature Thermocouples Product ID: TPK-02A, TPK-02B ,TPK-04L

Type K (chromel–alumel) is the most common general-purpose thermocouple with a sensitivity of approximately 41 µV/°C.It is inexpensive, and a wide variety of probes are available in its −200 °C to +1350 °C (−330 °F to +2460 °F) range. Type K was specified at a time when metallurgy was less advanced than it is today, and consequently characteristics may vary considerably between samples. One of the constituent metals, nickel, is magnetic; a characteristic of thermocouples made with magnetic material is that they undergo a deviation in output when the material reaches its Curie point, which occurs for type K thermocouples at around 185 °C.

  • TPK-02A Flate-Leaf Surface Probe
    • Measurement Range: -50 °C to 300 ° C.( -58 ° F to 572 ° F)
    • Thickness: 1.0 mm
    • Width: 2.0 mm
    • Length: 84 mm (Flat Leaf in golden color)
    • Straight Cable Lenght: 930 mm
  • TPK-02B Wider Flate-Leaf Surface Probe
    • Measurement Range: -50 ° C to 300 ° C.( -58 ° F to 572 ° F)
    • Thickness: 1.0 mm
    • Width: 5.0 mm
    • Length: 84 mm (Flat Leaf in golden color)
    • Straight Cable Lenght: 930 mm
  • TPK-04L 90 ° Angle Surface Probe
    • Measurement range: -50 ° C to 500 ° C.( -58 ° F to 932 ° F)
    • Diameter: 14 mm
    • Length : 185 mm (Stainless steel)
    • Hand Holder: 120 mm
    • Coiled Cable: 1500 mm

How to use Surface temperature thermocouple correctly?


  1. The Objective surface should be kept clean, as a result of oil, dust, or other insulating material. For example,  paint will affect the measurement accuracy .
  2. Measured surface should be flat, For example,  the measured object is rough or uneven, you need to use grease ,smear on its get better heat transmitting. Rough surface tends to cause the thermocouple sensor damaged or poor performance of  the accuracy .
  3. Measurement of surface area must be greater than the size of a probe sensor.
  4. Prohibit using surface thermocouple for rolling objects. Suggest to use scroll wheel temperature measurements Tecpel TPK-06 Rolling thermocouple to measuring rolling objectives.
  5. Take the vertical angle of 90 ° degrees.  The error should not exceed 5 ° degree angle to ensure the accuracy of temperature measurement
  6. 6. Do not measure the temperature exceeds its rated temperature, to avoid the thermocouple from being damaged.


    Does your TPK-02A, 02B or TPK-04L comply to the normal K type
    characteristic, between Temperature and electrimotive force ?
    Characteristic means a certain standard, such as ISO-xxxx ?
    Answer: All K type thermocouples from our company are made as per international standard ITS-90.