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Dead weight testers have been used for many years and are the accepted industry standard for providing high accuracy pressure calibraiton. At GNW, we supply DWT's from numerous different manufacturers including DH Budenberg and Wika. We also have our own range of DWT's.

We can refurbish and offer a traceable calibration service for oil or gas operated dead weight testers for a range of uncertainties depending upon your requirements. We can provide this service for DWT's from any manufacturer.

Available in all operating rangesour DWT's provide an easy means of precisely generating pressure to an accuracy of 0.1% of reading.

They are ideal in use of calibrating, setting, testing, and repairing pressure measurement and control devices. Traceable to National Standards assuring instrument accuracy. We can also offer UKAS traceablilty if you require.

Field portable models can be provided. A single carrying case holds the pressure generation pump as well as the necessary tools and accessories. A second box contains the weights used for pressure generation. All operating ranges availablePneumatic and Hydraulic versions are availablePiston cylinder assemblies of different ranges are readily interchangeable offering unparalleled flexibility.Pistons can be changed quickly, easily, safely.