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. You can read an article about our state-of-the-art calibration facilities by clicking here. 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). View Schedule of Calibration PDF by clicking here.
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:
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.
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.
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.
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.
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
-50 to 100°C CMC 0.04°C
thermistor & PT100 test caps
-18 to 100°C CMC 0.1°C
-200 to -50°C CMC 0.25°C
-50 to 1372°C CMC 0.15°C
Reference Thermapen® Calibration Thermometer. 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 ordercertificated 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 orderin production- delivery 10 to 14 working days