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 

Air temperature sensors permanently installed within a customer’s facility (for example, 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: ±0.08 °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.

Contact

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