UKAS Temperature Calibration

by Industry Superstore on April 26, 2023 Categories: Product News

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 the 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 suppliers' in-house laboratories are inspected regularly to ensure that their calibration methods, equipment and personnel are maintained to the standards required by UKAS and ISO/IEC 17025.

What is 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 instrument's accuracy.

What is Meant By Uncertainty of Measurement?

When anything is measured, there is a probability that there will be some inaccuracies. The test instrument may not be 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 a combination of all potential errors can calculate this. 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 several factors. How important is the 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 temperature and humidity data loggers with internal or external probes. The standard certificate includes three different temperature or humidity points.

ETI's in-house UKAS-accredited calibration laboratory for temperature has a wide measurement range of -100 to 200°C with the 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 prove that instruments and probes have been calibrated against nationally approved standards.

ETI's in-house UKAS laboratory offers the following:

1 to 5-point UKAS Certificates

certified uncertainties from ±0.02°C

thermometer temperature range -100°C to 200°C

rapid turnaround, usually within five days

flexible certification to agreed temperature points

Thermometers & probes

Each standard UKAS Certificate indicates the deviations from standards at checkpoints -18, 0, 40, 70 and 100°C with a guaranteed uncertainty, depending on the probe type.

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 are 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 are 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.