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
£16.00
£19.20 inc. vat
  • Special Probe
  • Lumberg and Cold Junction
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ETI 810-105 LCD Bar Graph Digital Max/Min Thermometer
ETI 810-105 LCD Bar Graph Digital Max/Min Thermometer
£17.00
£20.40 inc. vat
  • Simultaneously displays the actual, max, and min temperature
  • Resolution of 1°C/°F or 0.1°C/°F (Max & Min)
  • Large custom LCD
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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
£22.00
£26.40 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
Comark KM221 Economical Food Thermometer
£31.00
£37.20 inc. vat
  • Temperature Range: -30°C to +110°C / -22°F to +230°F
  • Scales: °C Only
  • Sensor Type: Thermistor
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Extech IR267 Mini Infrared Thermometer with Type K Thermocouple Input
In Stock : Get It Next Working Day*
Extech IR267 Mini Infrared Thermometer with Type K Thermocouple Input
£31.70
£38.04 inc. vat
  • Measure infrared temperature, air temperature and temperature using a type K thermocouple
  • Compact, pistol-shaped design
  • Built-in laser pointer
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ETI 174-16X NTC Thermistor Penetration Temperature Probe – Choice of Cap
In Stock : Get It Next Working Day*
ETI 174-16X NTC Thermistor Penetration Temperature Probe – Choice of Cap
£35.00
£42.00 inc. vat
  • Temperature range: -40°C to +150°C
  • Supplied with a heavy-duty, ribbed, polypropylene handle
  • Available with a colour-coded cap of your choice
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Comark KM221 Digital Food Thermometer with Calibration Certificate
Comark KM221 Digital Food Thermometer with Calibration Certificate
£38.00
£45.60 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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TM Electronics CA2005 Thermometer with Hold Function
TM Electronics CA2005 Thermometer with Hold Function
£55.00
£66.00 inc. vat
  • High-accuracy
  • Hold Function with dual display
  • IP67 Waterproof Casing
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Testo 830-T2 Infrared Thermometer
In Stock : Get It Next Working Day*
Testo 830-T2 Infrared Thermometer
£55.25
£66.30 inc. vat
  • Infrared and probe measurements possible
  • 2 point laser for pinpoint measurements
  • Audible/visual alarms when customisable limits are exceeded
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TPI 343 Dual Input Digital Thermometer - Type K
In Stock : Get It Next Working Day*
TPI 343 Dual Input Digital Thermometer - Type K
£57.50
£69.00 inc. vat
  • Dual type K inputs
  • MIN/MAX and data hold functions
  • Easy to use
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Sauermann Kimo K-Si-TT3 2 Channel Thermometer
Sauermann Kimo K-Si-TT3 2 Channel Thermometer
£59.95
£71.94 inc. vat
  • 2 probes included, measuring range: -40 to 260°C/-40 to 500°F
  • Backlit LCD screen
  • Magnetic backing for easy fixing + Carrying bag
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ETI 221-043 Therma 3 Industrial Thermometer
In Stock : Get It Next Working Day*
ETI 221-043 Therma 3 Industrial Thermometer
£60.00
£72.00 inc. vat
  • Works with optional type K temperature probes (single channel)
  • High accuracy, professional digital thermometer ideal for industrial applications
  • Temperature range from -100 to 1372°C
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ETI 221-041 Therma 1 Industrial Thermometer
In Stock : Get It Next Working Day*
ETI 221-041 Therma 1 Industrial Thermometer
£65.00
£78.00 inc. vat
  • Compatible with a wide range of optional type K thermocouple temperature probes
  • High accuracy digital thermometer made for industrial applications
  • Temperature range from -99.9°C to 1372°C
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ETI 221-107 Therma 1T Thermometer
ETI 221-107 Therma 1T Thermometer
£65.00
£78.00 inc. vat
  • Fast-response thermometer designed for use with type T thermocouple probes
  • Measurement range from -100 to 400°C
  • 2 year guarantee from ETI included
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TM Electronics CA2005-P Chef Thermometer and Needle Probe
TM Electronics CA2005-P Chef Thermometer and Needle Probe
£65.00
£78.00 inc. vat
  • Chef's thermometer
  • High accuracy
  • Hold Function with Dual Display
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Comark C42C Food Thermometer
Stock Due : Estimated 1-2 Weeks
Comark C42C Food Thermometer
£69.00
£82.80 inc. vat
  • Rugged and Waterproof Case (IP65/67)
  • Temperature Range: -200°C to +400°C (Thermocouple)
  • MAX/MIN and HOLD
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ETI 221-061 Therma Elite Thermometer
In Stock : Get It Next Working Day*
ETI 221-061 Therma Elite Thermometer
£70.00
£84.00 inc. vat
  • Upgraded version of ETI's Therma 1 thermometer
  • Accepts a wide variety of interchangeable type K probes (sold separately)
  • High accuracy and reliable results
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Comark KM330 Type K Thermocouple Thermometer
In Stock : Get It Next Working Day*
Comark KM330 Type K Thermocouple Thermometer
£71.00
£85.20 inc. vat
  • Works with type K thermocouples
  • Wide measurement range
  • Measure in both Celsius or Fahrenheit
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Martindale DT173 Single Input K-Type Digital Thermometer
Martindale DT173 Single Input K-Type Digital Thermometer
£72.00
£86.40 inc. vat
  • Temperature range: -200°C to +1372°C
  • Selectable measurement units (°C or °F) and MIN/MAX/AVG functions
  • Supplied with a type-K thermocouple bead probe and features a tough casing with an integrated fold-away stand
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Extech TM100 Type K/J Single Input Thermometer
Stock Due : Estimated 1-2 Weeks
Extech TM100 Type K/J Single Input Thermometer
£72.50
£87.00 inc. vat
  • High temperature range
  • Supplied with 9V battery and Type K bead wire temperature probe
  • Backlit LCD display
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ETI 226-040 Therma 20 High Accuracy Catering Digital Thermometer
Stock Due : Estimated 1-2 Weeks
ETI 226-040 Therma 20 High Accuracy Catering Digital Thermometer
£73.00
£87.60 inc. vat
  • High accuracy penetration temperature probe for use in catering
  • Interchangeable thermistor temperature probe
  • Meets European Standard EN13485
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Extech EA11A EasyView Type K Thermometer with 150 Record Memory
In Stock : Get It Next Working Day*
Extech EA11A EasyView Type K Thermometer with 150 Record Memory
£75.00
£90.00 inc. vat
  • Accuracy of ±0.3%
  • Measure from -50 degrees Celsius to 1300 degrees Celsius
  • Store up to 150 temperature readings
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Beha-Amprobe TMD-50 Dual-Input Type K Thermocouple Thermometer
In Stock : Get It Next Working Day*
Beha-Amprobe TMD-50 Dual-Input Type K Thermocouple Thermometer
£77.70
£93.24 inc. vat
  • Measure temperature levels from two points simultaneously
  • Compatible with type K temperature probes
  • Highly accurate results (0.1%)
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Martindale DT85 Dual-Input Digital Thermometer
Martindale DT85 Dual-Input Digital Thermometer
£79.00
£94.80 inc. vat
  • Measure temperature from two points simultaneously
  • Huge measurement range
  • Includes two type K thermocouples
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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.