-40 °C to +100 °C
NPL calibrates thermometers for use in air, both those incorporated within relative humidity instruments and those used purely for air temperature measurement. These calibrations are performed in air, within a temperature-controlled chamber, by comparison against reference thermometers with traceability to national standards.
Calibration in the NPL laboratory
Range: -40 °C to +100 °C
Best uncertainty: ±0.04 °C between -20 °C and +50 °C (at other values: ±0.08 °C)
Find out more about Calibration above atmospheric pressure
Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success. Contact our Customer Services team on +44 20 8943 7070