Martindale DT175 Dual Input K Type Digital Thermometer

  • Dual K-type input for differential measurements
  • Auto ranging -200°C to 1372°C, -328°F to 1999°F
  • Resolution to 0.1°C
  • MIN/MAX/AVG recording
  • Relative & Hold functions
  • Large character backlit display
  • Includes two thermocouples

EAN: 5036162187742 SKU: MARDT175 Category:


The DT175 is a high performance dual input K Type digital thermometer enabling the measurement of both input and output temperatures of systems and equipment simultaneously. When set to differential mode, the difference between the two thermocouple readings can be displayed which is useful for measuring the effectiveness of heating systems. The DT175 has a wide measuring range from -200°C to 1372°C.

The compact thermometer is supplied in a tough holster and has large digits and a back light for easy viewing in all environments. There is a fold away built in stand for optimum viewing angle.

The DT175 is supplied with two bead thermocouples and is compatible with a wide range of optional Martindale K Type probes including air probes, penetration probes and clamp and surface probes. For more information on probe accessories click here.

Readings can be displayed in either Centigrade of Fahrenheit and the thermometer has an adjustable offset to optimise thermocouple performance over the desired temperature range. There is a MIN/MAX/AVG mode for recording extremes of readings. In this mode the auto power off function is disabled to allow recording over longer periods of time.


Measurement range -200°C to 1372°C. (-328°F to 1999°F) (limited by the range of the thermocouple probe used)
Resolution 0.1° to 199.9°C/°F, 1° ≥ 200°C/°F
Temperature accuracy: -200°C to -60°C, ± (0.1% of rdg + 2°C)

-60°C to 1372°C, ± (0.1% of rdg + 1°C)

-328°F to -76°F, ± (0.1% of rdg + 4°F)

-76°F to 1999°F, ± (0.1% of rdg + 2°F)

Input protection 24V DC or AC rms maximum input voltage on any combination of input pins.
Input connector Accepts standard miniature thermocouple connectors (flat blades spaced 7.9mm. center to center).
Supplied thermocouple probe 1.2M Type K thermocouple bead probe (teflon tape insulated)
Maximum insulation temperature 260°C (500°F)
Probe accuracy ± 2.2°C or ± 0.75% of rdg
Display 3½ digit liquid crystal display (LCD) with maximum reading of 1999
Measurement rate 2.5/second
Polarity Automatic, positive implied, ‘-‘ for negative polarity indication
Supply 4 x 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A)
Battery life 200 hours
Dimensions 160 x 83 x 38 mm
Weight 240g approx. incl batteries
Includes 2x Type K bead thermocouple, 4 x 1.5V AAA alkaline batteries and manual