Reference Calibration Thermometer

£230.00 ex VAT

£276.00 inc VAT

ETI Reference Calibration Thermometer for calibration testing.

  • ±0.03 °C/°F high system accuracy
  • 5-point UKAS Calibration Certificate included
  • Supplied with a high-accuracy probe
  • Ideal for calibration comparison checks
  • Polygiene BioMaster product protection
  • Meets the European Standard EN 13485

ETI Reference Calibration Thermometer for calibration testing is a high-accuracy PT100 device for completing calibration tests on a range of thermometers and probes.

Upgrade to the Reference Plus Thermometer for max/min and hold functions.


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Product code: 222-055
Biomaster Protected Made in UK BRCGS

Reference thermometer features

The ETI Reference Thermometer is a master thermometer for calibration tests. It has a high accuracy of ±0.03 °C and is supplied with a permanently attached high-accuracy probe. The reference thermometer also includes a 5-point UKAS Certificate of Calibration.

The Reference Calibration Thermometer has a temperature range of -199.99 to 199.99 °C and displays readings with a resolution of 0.01 °C.

What is a reference thermometer?

Thermometers need their accuracy validated regularly to ensure readings are correct. Calibration thermometers (also known as reference or master thermometers) are used to carry out this process in conjunction with a stable temperature source such as a dry-well comparator.


Because calibration thermometers have a high system accuracy, users can be confident that they will show an accurate reading of the source being measured in the test. 

 They can then compare the results between the calibration thermometer and the thermometer under test.

The reference thermometer also includes a 5-point UKAS Certificate of Calibration. This means it has been calibrated in our UKAS laboratory at five different temperatures: -18, 0, 40, 70 and 100 °C. Special ranges may be certified by arrangement with the ETI UKAS calibration laboratory.

The Reference Plus Thermometer possesses all of the same great features as the Reference Thermometer, with the addition of max/min and hold functions for easy recording.

Product Details

Data sheet

Range:-199.99 to 199.99°C
Resolution:0.01 °C
Accuracy:±0.03 °C (-49.99 to 149.99°C) ±0.1 °C (-150 to 200°C)
System Accuracy:±0.03 °C (-49.99 to 149.99°C) ±0.1 °C (-150 to 200°C)
Battery:3 x 1.5 volt AAA
Battery Life:2000 hours
Sensor Type:PT100 1/10th DIN
Display: 10mm LCD
Dimensions:25 x 56 x 128mm
Weight:210 grams
Case Material: ABS plastic includes Biomaster product protection
Country of Manufacture: United Kingdom
Guarantee: two years
Measurement Scale: Celsius
Certification: UKAS calibration certificate
Conforms to Standard:EN 13485

Specific References

Precision & Reference manual

Reference & Precision thermometer manual

Download (416.86KB)
222-055 C of C

222-055 Reference certificate of conformity

Download (70.88KB)
222-063 C of C

222-063 Reference Plus certificate of conformity

Download (70.9KB)

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