Therma 20 thermistor thermometer

  • Therma 20 thermistor thermometer
ETI Ltd.
Therma 20 thermistor thermometer with high accuracy. HACCP compatible thermometer
Part #: 226 040
Category: Temperature
Branch: Food sector


The Therma 20 thermistor thermometer has been specifically designed for use in the catering industry with HACCP, due diligence and health and safety procedures in mind. The Therma 20 thermometer displays temperature to 0.1 °C over the range of -39.9 to 149.9 °C with a high system accuracy of ±0.4 °C (-10 to 70 °C) which is guaranteed for life, due to the instruments advanced electronics. The Therma 20 features an easy to read, LCD display with low battery indication. The thermometer can be used in low ambient working temperatures down to -20 °C, which meets the requirements of the European Standard EN13485 for the temperature monitoring of quick frozen foods. The instrument is housed in an ergonomic, robust ABS case that includes 'Biomaster' additive which reduces bacterial growth. The low power consumption electronics are powered by three AAA batteries, giving the instrument exceptional battery life of a minimum of five years. The thermometer's auto-power off facility turns the instrument off automatically after ten minutes. The Therma 20 thermometer incorporates an easy to use Lumberg screwlocking type connector, allowing a wide range of interchangeable probes to be used. ETI offers an extensive range of interchangeable thermistor probes.

  • battery monitor: yes
  • case material: ABS plastic with Biomaster anti-bacterial additive
  • certification: traceable calibration certificate
  • country of manufacture: United Kingdom
  • display type: LCD digital
  • HACCP: compatible with HACCP
  • measurement scale: Celsius
  • power saving: auto-off
  • power source: battery powered
  • probe/sensor style: plug mounted probe & lead
  • warranty: two years
  • water/dust resistance: IP64 when using boot (optional accessory)
  • minimum five-year battery life
  • meets the European Standard EN13485
  • Thermistor test caps.

    # 286-001
    Thermistor test caps are suitable for checking the accuracy of the Therma 20, Therma 22 or any equivalent thermistor thermometer. Simply plug in the desired test cap and the display on the thermometer should show the same temperature as the certified value, therefore you can be assured that your instrument is calibrated and is reading correctly. Each test cap is supplied complete with a UKAS Certificate of Calibration with a guaranteed uncertainty of ±0.1°C.
  • Tthermometer zip- pouch

    # 830-003
    Protective zip pouch for earlier style Therma series, CaterTemp®, Precision and Reference thermometers. Thermometer protective zip pouch - These protective zip pouches are ideal for transporting and protecting your original style ETI Therma series, CaterTemp®, Precision and Reference thermometers. The zip pouches are manufactured from soft PVC imitation leather, and have a zip fastener and loop atttachment. These zip pouches measure 46 x 80 x 290mm. Help protect your instrument from everyday bumps and scrapes.
  • Рrotective silicone boots for Therma series

    # 830-221
    Protective rubber boot for Therma series, and other new style ETI thermometers. ◾protects against accidental damage ◾made from durable silicone Protective Silicone Boot for that is designed to protect your ETI thermometer against accidental damage, knocks and scuffs - all 6 colours fit the following ETI thermometers: ◾Food Check, ◾CaterTemp®, ◾Therma 20, ◾Therma 22 and ◾ThermaCheck ◾Thermamite ◾Precision PT100 ◾Reference & Reference Plus
  • Stainless steel wall bracket and white boot

    # 832-050

    Stainless steel wall bracket and white silicone boot ◾stores your thermometer safely ◾easy wall hanging ◾white boot provides added protection in use Stainless steel thermometer holder or wall bracket & white silicone boot - lets you store your ThermaCheck, Precision, CaterTemp®, FoodCheck, Therma 20, Therma 22 or thermometer safely - wherever you need it.




-39.9 to 149.9°C



system accuracy

±0.4°C (-10 to 70°C)


3 x 1.5 volt AAA

battery life

minimum 5 years (20000 hours)

sensor type



12 mm LCD


25 x 56 x 128mm


130 grams


Enquiry Form

Related products

  • Testo 110

    Testo 110

    testo 110, 1 channel temperature measuring instrument NTC, audible alarm, connection to an optional radio probe, with battery and manual....
  • testo 926

    testo 926

    Testo 926-1, 1 channel food temperature measuring instrument T/C Type T, audible alarm, connection to an optional radio probe, with...
  • testo 112

    testo 112

    testo 112, 1 channel temperature measuring instrument NTC/Pt100, calibratable, with battery. Compatible with HACCP.