UKAS Temperature Calibration


For Humidity Calibration Click here!

The United Kingdom Accreditation Service (UKAS) is the UK national accreditation body responsible for assessing and accrediting the competence of organisations in the fields of measurement, testing, inspection and certification of systems, products and personnel. It operates under a Memorandum of Understanding with the Secretary of State for Department for Business, Energy & Industrial Strategy, who has licensed UKAS to use accreditation symbols that feature the Royal Crown, and to confer the use of these symbols to UKAS accredited organisations.

Having achieved accreditation to UKAS, our in-house laboratories are inspected on a regular basis to ensure that our calibration methods, equipment and personnel are maintained to the standards required by UKAS and ISO/IEC 17025.
Our UKAS accredited calibration laboratory is also capable of calibrating non-ETI manufactured temperature and humidity instruments and data-loggers. Please contact our sales department for more information. The following are just a few examples of frequently asked questions regarding calibration:

The Difference Between Calibration & Certification?
Calibration means "to measure". The instrument being tested is calibrated against a known source. A certificate shows which results have been obtained during calibration and certifies the accuracy of the instrument.

What is Meant By Uncertainty of Measurement?
When anything is measured there is a probability that there will be some inaccuracies. Perhaps the test instrument is not entirely accurate; perhaps ambient temperatures are not conducive to accurate measurement; possibly the operator has not followed correct procedures. Each measurement has an "uncertainty" factor, and this can be calculated by a combination of all potential errors. This is then stated as a tolerance, i.e. plus or minus the measured figure.

How Often Should We Have Our Thermometer Checked?
It depends on a number of factors. How important is temperature in your process? How often do you use your thermometer? How roughly is the instrument treated? Do you have the opportunity to check against other thermometers? For continued confidence in the accuracy of measurement, and to assist in compliance with HACCP and other legislation, it is recommended that you obtain a certificate of calibration at 12-month intervals.

Can My Data Loggers Be Calibrated?
Yes. We can issue UKAS Certificates for both temperature and humidity data-loggers with internal or external probes. The standard certificate includes three different temperature or humidity points. For temperature calibration and measurement capability, see above, for humidity and air temperature, click here.

ETI's in-house UKAS accredited calibration laboratory for temperature has a wide measurement range of -100 to 200°C with a best measurement capability of 0.02°C. The laboratory can also measure resistance up to 16MΩ (i.e. resistance decade boxes and PT100/RTD temperature simulators) and DC voltage 0 to 200 mV (i.e. thermocouple simulators and calibrators).

Original UKAS Certificates provide proof that instruments and probes have been calibrated against nationally approved standards.  View a PDF of our certificate by clicking here

Our in-house UKAS laboratory offers:

  • 1 to 5-point UKAS Certificates
  • certified uncertainties from ±0.02°C
  • thermometer temperature range -100°C to 200°C
  • rapid turnaround usually within 5 days
  • flexible certification to agreed temperature points

 
Thermometers & probes
Each standard UKAS Certificate indicates the deviations from standards at various check points -18, 0, 40, 70 and 100°C with a guaranteed uncertainty, dependant on the probe type, see best measurement capability table below.

Test caps
Each UKAS Certificate indicates the deviations from standards at specific check points (-18, 0, 3, 70 and 100°C) to an uncertainty of ±0.1°C. Other temperature points available on request. 

Simulators
Each UKAS Certificate indicates the deviations from standards at specific check points (-20, 0, 100, 195 and 500°C) to an uncertainty of ±0.15°C. Other temperature points available on request. 

Data-loggers
Each certificate indicates the deviations from standards at three check points (-18, 0, and 40°C) to an uncertainty of ±0.04°C. The results are recorded and include each data logger's serial number, type and model.

For temperature calibration quotation please click here.

Calibration & Measurement Capability (CMC) 

thermistor thermometer & probe
-50 to 150°C  CMC 0.02°C
-100 to -50°C  CMC 0.13°C

PT100 (resistance sensors) thermometer & probe
-50 to 200°C  CMC 0.02°C
-100 to -50°C  CMC 0.13°C

thermocouple thermometer & probe
-50 to 120°C  CMC 0.15°C
-100 to -50°C  CMC 0.17°C
120 to 200°C  CMC 0.2°C

temperature data-loggers
-50 to 100°C  CMC 0.04°C

thermistor & PT100 test caps
-18 to 100°C  CMC 0.1°C

thermocouple simulators
-200 to -50°C  CMC 0.25°C
-50 to 1372°C  CMC 0.15°C

  • Reference Thermapen® Calibration Thermometer. FREE Ice bath mug with every order! 5-point UKAS Certificate included ideal for calibration comparison checks one-handed operation 2 year guarantee meets the European Standard EN 13485 unavailable for next day delivery as certificated at time of order 

    £115.00 ex VAT
      No tax

    certificated at time of order
    certificated at time of order
  • Comparator for infrared thermometers.portable & easy to use no external power required allows economical infrared thermometer checking 

    £42.00 ex VAT
      No tax

    in stock
    in stock
  • Thermistor test caps.supplied with a UKAS Certificate of Calibration verify accuracy of any thermistor thermometer available in range of temperatures unavailable for next day delivery as certificated at time of order 

    £37.00 ex VAT
      No tax

    certificated at time of order
    certificated at time of order
  • Reference thermometer calibration thermometer.±0.03 °C/°F high system accuracy 5-point UKAS Calibration Certificate included supplied complete with high accuracy probe ideal for calibration comparison checks meets the European Standard EN 13485 unavailable for next day delivery as certificated at time of order 

    £215.00 ex VAT
      No tax

    certificated at time of order
    certificated at time of order


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