COMPARISON PUMPS

The hydraulic comparison pumps are used to autonomously generate pressure to carry out checks and calibration on pressure instrument.
They are suitable for use in laboratories or on the field, as they do not require external power-supply sources. They can come with a full series of analogue and digital pressure gauges used as reference instruments for the generated signal.
The pumps are fitted with a pressurisation handwheel to quickly generate the required value, some models also have a volume regulator for fine adjustment. A needle valve and a tank are used to empty and fill up the circuit with the calibration fluid.
The hydraulic pumps compress water or oil, the various models are suitable for pressure values up to 7000 bar.

DEADWEIGHT TESTERS

Pneumatic and hydraulic Deadweight testers are used for checking and calibration on meters and mechanical or electronic transducers with an extremely accurate generation and reference system with a tolerance up to ±0.006%.
Deadweight testers are considered the absolute calibration reference for all other pressure measuring devices.
They are entirely made of metal with no sensitive electrical parts and this means the devices are very sturdy and stable over time, thereby allowing for very long certification periods without noticeably losing in accuracy.
The Deadweight testers are mainly designed for use in laboratories.
The pneumatic Deadweight testers must come with an external source of pressure and/or a vacuum pump to be able to generate the relative calibration signal.
Hydraulic Deadweight testers have a built-in tank that contains the pressurisation liquid.

SPECIAL CUSTOMIZED SYSTEMS ARE MANUFACTURED ON REQUEST