The manufacturer says the AX1007CP mass comparator is the world’s first table-top constant-pressure automatic mass comparator capable of weighing 1 kg artefacts at 0.1 µg resolution.
National measurement institutes (NMI’s) and calibration laboratories can reduce uncertainty by measuring mass standards within a constant pressure. James Berry of the UK’s National Physics Laboratory (NPL) states, “The AX1007CP mass comparator has an excellent characteristic regarding the linearity of is sensitivity curve. This meets the aim of reducing the mass comparator uncertainty component in the overall uncertainty budget.”
Up to four 1 kg artefacts can be automatically compared with 0.1 µg resolution at a constant pressure to reduce measurement uncertainty when calibrating against national or industry standards.
The system allows fast and accurate mass comparisons to enable NMIs to disseminate traceability from their national standard at extremely high resolution. It is now available worldwide after the successful piloting of three units in key installations in the UK, Australia and Canada.
The system represents a complete mass determination solution comprising a mass comparator, a controller unit and AX control software. Software control facilitates both automatic operation and traceable, secure results. Direct data export to laboratory information management systems (LIMS) and automatic climate data acquisition allow compensation calculations for air buoyancy correction, providing secure results of the highest accuracy. Mettler Toledo
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