Thermocouple, NTC & RTD Input Thermometers

Digital thermometers are the quickest and most accurate way to determine temperature. We stock a wide variety of different thermometer types including food thermometers, outdoor-use and multi-channel thermocouple instruments.

Find out more about Thermocouple, NTC & RTD Input Thermometers below.

Comark KX7940 Special Probe Lumberg and Cold Junction
Comark KX7940 Special Probe Lumberg and Cold Junction
Discontinued
  • Special Probe
  • Lumberg and Cold Junction
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Comark KM400AP Allergen Pocket Digital Thermometer, Range -50°C to +200°C
Stock Due : Estimated 1-2 Weeks
Comark KM400AP Allergen Pocket Digital Thermometer, Range -50°C to +200°C
£21.90
£26.28 inc. vat
  • Temperature Range: -50°C to +200°C / -58°F to +400°F
  • Thin Tip Probe: 1.5mm
  • Accurate to ±1°C (±2°F)
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Comark KM221 Economical Food Thermometer
In Stock : Get It Next Working Day*
Comark KM221 Economical Food Thermometer
£29.35
£35.22 inc. vat
  • Temperature Range: -30°C to +110°C / -22°F to +230°F
  • Scales: °C Only
  • Sensor Type: Thermistor
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Comark KM221 Digital Food Thermometer with Calibration Certificate
Comark KM221 Digital Food Thermometer with Calibration Certificate
£36.19
£43.43 inc. vat
  • Low cost, easy-to-use thermometer for measuring food temperatures
  • High accuracy, reliable measurements
  • Supplied with free standard calibration certificate from the manufacturer
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Comark C42C Food Thermometer
Stock Due : Estimated 1-2 Weeks
Comark C42C Food Thermometer
£65.00
£78.00 inc. vat
  • Rugged and Waterproof Case (IP65/67)
  • Temperature Range: -200°C to +400°C (Thermocouple)
  • MAX/MIN and HOLD
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Comark C48C Industrial Thermometer
In Stock : Get It Next Working Day*
Comark C48C Industrial Thermometer
£65.00
£78.00 inc. vat
  • Rugged and Waterproof Case (IP65/67)
  • Temperature Range: -200°C TO +1372°C
  • MAX/MIN and HOLD
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Comark KM330 Type K Thermocouple Thermometer
In Stock : Get It Next Working Day*
Comark KM330 Type K Thermocouple Thermometer
£70.00
£84.00 inc. vat
  • Works with type K thermocouples
  • Wide measurement range
  • Measure in both Celsius or Fahrenheit
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Comark KM340 Type K Differential Thermometer
In Stock : Get It Next Working Day*
Comark KM340 Type K Differential Thermometer
£72.00
£86.40 inc. vat
  • Works with type K thermocouples
  • Dual inputs
  • Wide temperature range
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Comark KM340/P/KIT KM340 Thermometer Kit
Stock Due : Estimated 1-2 Weeks
Comark KM340/P/KIT KM340 Thermometer Kit
£99.65
£119.58 inc. vat
  • Temperature Range: -50°C to +1300°C / -58°F to +1999°F
  • Sub-Miniature Connector
  • Contains: KM340 Thermometer, SK21M and AK28M Probes and Case
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Comark KM330/P/KIT Industrial Thermometer Kit
In Stock : Get It Next Working Day*
Comark KM330/P/KIT Industrial Thermometer Kit
£103.50
£124.20 inc. vat
  • Includes thermometer, air probe and surface probe plus a carrying case
  • High accuracy measurements
  • Type K thermometer
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Comark N9094 Waterproof Food Thermometer
In Stock : Get It Next Working Day*
Comark N9094 Waterproof Food Thermometer
£130.90
£157.08 inc. vat
  • Purpose-built for use in the food industry
  • Unique Biocote technology protects against micro-organism growth
  • Massive battery life and compatible with three different sensors
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Comark KM340/PRO Differential Thermometer Kit
Stock Due : Estimated 1-2 Weeks
Comark KM340/PRO Differential Thermometer Kit
Discontinued
  • Includes thermometer and temperature probes
  • Supplied in a high quality hard carrying case
  • Excellent for use by HVAC professionals
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Comark N9005 Industrial Thermometer
In Stock : Get It Next Working Day*
Comark N9005 Industrial Thermometer
£185.00
£222.00 inc. vat
  • Heavy-duty industrial grade thermometer
  • Compatible with type T and type K thermocouples
  • Wide measurement range
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Comark Rugged Food Thermometer Kit with PX22L/C Thermistor Probe
Comark Rugged Food Thermometer Kit with PX22L/C Thermistor Probe
£192.90
£231.48 inc. vat
  • Support for Thermistor, Type T and Type K probes 
  • Biocote Antimicrobial Protection
  • High Accuracy
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Comark Food Kit with PX22L Food Penetration Probe
Comark Food Kit with PX22L Food Penetration Probe
£192.90
£231.48 inc. vat
  • Includes PX22L Food Penetration Probe and N9094 Thermometer
  • Temperature Range -200°C to +1372°C / -328°F to +2501°F
  • Easy to use
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Comark N5001USB HACCP Auditor Instrument with Full Graphic Display
Comark N5001USB HACCP Auditor Instrument with Full Graphic Display
£339.00
£406.80 inc. vat
  • Comprehensive HACCP auditing tool
  • Configure your own procedures depending on your specific need
  • Unique BioCote technology protects the tester from contamination by bacteria
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About Thermocouple, NTC & RTD Input Thermometers

Many thermometers originally had slightly inaccurate, analogue gauges that used mercury and other substances. These have been gradually phased out thanks to innovations in the field of digital temperature measurement.

Digital thermometers are significantly more accurate than older-style thermometers due to their ability to accurately display temperature in Celsius, Fahrenheit, and Kelvin as a digital reading. This is essential for those who need accurate temperature readings in challenging environments are for installations that rely on accurate set-up data.

Devices for measuring temperature generally come in many different forms, and although they all come under the category of digital thermometers they all are used for different kinds of temperature measurement.

We have a versatile range that features pocket-sized models and many, especially the data-loggers, with PC-interfacing ability. Some models are also capable of working in extreme temperatures, allowing accurate temperature readings in potentially hazardous environments. Supermarkets in particular will find great use in a data-logging thermometer with audible alarms, as these devices will provide a clear indication when freezers are not working at the correct temperature.