Precise temperature checks in the field need clear readings, flexible probe choice and a housing that copes with daily handling. This handheld family measures two thermocouple channels at once and automatically shows the temperature difference, making it suitable for comparing two measuring locations with one instrument.
Standard K, J, T, N, R, S, B and E thermocouple probes can be connected, covering ranges from -220.0...+1750 °C depending on type. The instruments support °C, °F and K, detect Min/Avg/Max values, and offer Hold and Rel functions for controlled field work. PRO 135.2 adds data logging with up to 1 million data sets, stored as CSV files with date and time stamp for USB readout.
A backlit 140 x 160 dot matrix display keeps values readable from daylight to darkness, with large-value, multi-row, statistics and chart views. The IP 67 housing, except probe connection, IK 06 impact rating, foldable stand and magnet support practical use on site.
Two miniature female flat-pin TC connectors accept standard thermocouple probes for the supported probe types.
The display can show large single values, multiple rows, statistical information or one parameter as a numerical and graphical view.
Minimum, average and maximum values can be detected for each channel, with reset control for a new calculation.
High and low alarm thresholds can be set with optional hysteresis, using LCD indication and buzzer activation when limits are exceeded.
Zero point, gradient and surface correction settings allow the displayed value to be adjusted for each input channel.
The instruments operate from 4 AA alkaline batteries or external 5 Vdc via USB C; auto-off and backlight settings are configurable.
USB C supports connection to a PC for serial communication and data acquisition in COM interface mode.
PRO 135.2 records measurements automatically with configurable intervals and stores the data in the internal memory.
