The hydraulic comparison pumps are used to autonomously generate pressure to carry out checks and calibration on pressure gauges with a standard 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.
