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.

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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ETI Micro Pocket Thermometer
ETI Micro Pocket Thermometer
£21.00
£25.20 inc. vat
  • White, red, or blue colours
  • Reduced tip for quicker response
  • Temperature range: -50 to 150 °C
  • IP65 water-resistant
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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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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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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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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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ETI Therma 22 Type T/Thermistor Catering Thermometer
Stock Due : Estimated 1-2 Weeks
ETI Therma 22 Type T/Thermistor Catering Thermometer
£87.00
£104.40 inc. vat
  • Works with both type T thermocouple and thermistor temperature probes
  • High accuracy, reliable temperature measurements
  • Designed for use within the food/catering industry
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ETI 232-101 Therma Waterproof Thermometer
In Stock : Get It Next Working Day*
ETI 232-101 Therma Waterproof Thermometer
£90.00
£108.00 inc. vat
  • Robust, fully waterproof digital thermometer rated to IP66 and IP67
  • Suitable for use with a wide variety of interchangeable type K temperature probes
  • Temperature measurement range from -99.9 to 1372°C
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ETI 231-022 Therma 2 Channel Differential Thermometer
In Stock : Get It Next Working Day*
ETI 231-022 Therma 2 Channel Differential Thermometer
£94.00
£112.80 inc. vat
  • High precision digital thermometer with two input ports
  • Works with a wide variety of type K temperature probes (sold separately)
  • Waterproof design rated to IP66 and IP67
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ETI ThermaGuard Pharm Vaccine Thermometers with UKAS Certificate - Single or Dual External Sensor
ETI ThermaGuard Pharm Vaccine Thermometers with UKAS Certificate - Single or Dual External Sensor
£95.00
£114.00 inc. vat
  • UKAS Calibration Certificates
  • Programmable high & low audible alarms
  • European Standard EN 13485
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ETI 232-041 Therma 22 Plus Thermometer with Waterproof Case
Stock Due : Estimated 1-2 Weeks
ETI 232-041 Therma 22 Plus Thermometer with Waterproof Case
£100.00
£120.00 inc. vat
  • Upgraded version of the Therma 22 thermometer with waterproof case
  • Universally suitable for use with thermistor/Type T thermocouple probes (sold separately)
  • Ideal for measuring temperatures in food processing applications
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ETI ThermaGuard Fridge Thermometer with UKAS Certificate - Single or Dual External Sensor
ETI ThermaGuard Fridge Thermometer with UKAS Certificate - Single or Dual External Sensor
£101.00
£121.20 inc. vat
  • 2 point (-18, 0°C) UKAS Calibration Certificates
  • Programmable high & low audible alarms
  • Records the max/min temperature
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ETI 860-845 RayTemp 8 Infrared/Type K Thermometer Kit
In Stock : Get It Next Working Day*
ETI 860-845 RayTemp 8 Infrared/Type K Thermometer Kit
£103.50
£124.20 inc. vat
  • Special kit version of ETI's RayTemp 8 thermometer
  • Includes thermometer, penetration probe, probe wipes and carrying case
  • Great value!
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ETI 222-053 Precision PT100 Digital Thermometer
ETI 222-053 Precision PT100 Digital Thermometer
£105.00
£126.00 inc. vat
  • Exceptionally high accuracy of ±0.2°C
  • Works with a wide variety of optional PT100 class A temperature probes (sold separately)
  • Temperature measurement range from -199.9 to 499.9°C
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 ETI 221-900 Therma K Metal Thermometer (No Probe)
Stock Due : Estimated 1-2 Weeks
ETI 221-900 Therma K Metal Thermometer (No Probe)
£120.00
£144.00 inc. vat
  • Temperature range: -99.9°C to +1372°C
  • Durable, waterproof, aluminium casing
  • Ideal for everyday catering and food processing applications
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ETI 221-700 Therma 20 Metal Thermometer
ETI 221-700 Therma 20 Metal Thermometer
£120.00
£144.00 inc. vat
  • Temperature range: -39.9°C to +149.9°C
  • Large, easy-to-read LCD
  • IP67-rated, robust extruded aluminium case with Biomaster Antimicrobial technology
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ETI Therma K & T Blue Thermometers
ETI Therma K & T Blue Thermometers
£125.00
£150.00 inc. vat
  • Connect to your iOS or Android device
  • SDK & technical integration support available
  • Two models to choose from
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ETI 292-040 Therma 20 Blue Thermometer
ETI 292-040 Therma 20 Blue Thermometer
£125.00
£150.00 inc. vat
  • Bluetooth wireless technology 
  • ±0.5 °C high system accuracy 
  • Free traceable calibration certificate
  • 3,000-Hour Battery Life
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ETI 860-095 HVAC Pipe Clamp Differential Thermometer Kit
Stock Due : Estimated 1-2 Weeks
ETI 860-095 HVAC Pipe Clamp Differential Thermometer Kit
£128.00
£153.60 inc. vat
  • Special bundle version of the ETI Therma Differential thermometer
  • Includes 2 x pipe clamp temperature probes + zip pouch
  • High accuracy, reliable results
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ETI 292-921 ThermaQ Blue Dual-Input Thermometer with Bluetooth
ETI 292-921 ThermaQ Blue Dual-Input Thermometer with Bluetooth
Call For Pricing
  • Measure temperature from two points simultaneously
  • Connect via Bluetooth to your smartphone/tablet and view results wirelessly
  • Highly accurate with excellent resolution and exceptional battery life
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ETI 292-022 Therma 22 Blue Thermometer
ETI 292-022 Therma 22 Blue Thermometer
£135.00
£162.00 inc. vat
  • Bluetooth wireless technology 
  • Free traceable calibration certificate
  • 3,000-Hour Battery Life
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ETI 231-052 ThermaQ 2 Four-Channel Thermocouple Thermometer
ETI 231-052 ThermaQ 2 Four-Channel Thermocouple Thermometer
£140.00
£168.00 inc. vat
  • View the temperature readings from four thermocouples simultaneously
  • Range: -99.9°C to +1372°C
  • Programmable high and low alarms for each channel
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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.