National Physical Laboratory

Air temperature sensors -40 °C to +100 °C

NPL calibrates air temperature sensors - both those incorporated within relative humidity instruments, and thermometers used purely for air temperature measurement. These calibrations are performed in air, normally within a laboratory temperature-controlled chamber.

Image courtesy of iStockphoto
Image courtesy of iStockphoto

Air temperature sensors permanently installed within a customer's facility (e.g. a climatic chamber) can be calibrated in-situ through NPL's mobile calibration service.

The following services are available:

Calibration in the NPL laboratory
Range: -40 °C to +100 °C
Best uncertainty in applied condition: 0.04 °C (between -20 °C and +50 °C, at other points: ±0.08 °C)

Calibration at customer premises
Range: 0 °C to +82 °C
Best uncertainty in applied condition: ±0.2 °C

Uncertainties stated on certificates are the combination of the values due to the applied condition together with a contribution from the instrument resolution and stability during calibration.

Notes

Calibrations in the NPL laboratory are performed with UKAS (ISO 17025) accreditation.

Uncertainties quoted with the coverage factor k = 2. Uncertainties stated on certificates are the combination of the values due to the applied condition (quoted above) together with a contribution from the hygrometer resolution and stability during calibration.

For NPL's mobile calibration service, for humidity and temperature chambers, see here

Contact

Customer Service tel: +44 20 8943 8681
E-mail: humidity_enquiries@npl.co.uk

Last Updated: 11 Apr 2017
Created: 13 Jul 2010

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