TM602 Pocket Thermocouple Thermometer

Wahl Heat-Prober® Pocket Thermometer model TM602 measures thermocouple types K, T, J, E, R, S, B, U, L, C, N, Platinum, Mo, NiMo/NiCo


Wahl TM602 Series Pocket Thermometers are designed to simplify temperature transmitters and probes maintenance and commissioning. Featuring 0.02% Accuracy and measure in Thermocouples. Resolution is programmable for better reading by user with up to 1mΩ or 1μV.  Rugged IP54 construction is ideal for on-site use as a metrology or control tool.

These thermometers have a graphical interface that simplifies programming and reading.  Display measurements in text or graphic form with the use of internal data management.  Memory can handle up to 10,000 readings wiht date and time stamp.

This model includes advanced features, including calibrated sensors (creating a database to design curves for sensors after calibration in relation to the corrections shown on a calibration report), scaling (for correction of probe errors), and data recording (manually, on event, or automatically.)



0.02% of reading

Temperature Coefficient

15 ppm / °C in thermocouples
10 ppm / °C in RTDs

Compatible Thermocouple Types

K, T, J, E, R, S, B, U, L, C, N, Platinum, Mo, NiMo/NiCo

CJC Accuracy



Graphical LCD with adjustable contrast and backlight.
Display in °C, °F, mV and Ohms

Display Resolution

Three user selectable resolutions, up to 3 decimal places: High, Middle or Low resolution.


English, Spanish, French, German, Italian

Date and Time

Continuously displayed


Freezes the display


Maximum, Average, and Minimum are displayed. Reset function allows re-calculating of the values.


A filter can be applied to avoid fluctuation of the value.


One year warranty covers defects in materials and workmanship


Recording and onscreen analysis


Specifications are at 23°C ± 5°C, between 45% and 75% relative humidity.

Power Supply

Four AA size batteries

Estimated Battery Life

40 hours

Electrical Security


Electromagnetic Capability


Thermocouple Connector

Mini-compensated connector


6.18 in x 3.35 in x 1.77 in (157mm x 85mm x 45mm)


10.79 ounces (306 grams)

Included Accessories

Protective Boot, Four AA batteries, and wrist strap.

Nominal Operating Conditions

-10°C up to +50°C, Relative Humidity: 20% up to 80% non-condensing

Maximum Operating Conditions

-10°C up to +55°C, Relative Humidity: 10% up to 80% (70% at 55°C)

Maximum Storage Temperature

-30°C up to +60°C (without batteries)

IP Rating

IP54 in compliance with standard EN 60529

CE Mark?