First Calibration Centre in Italy for the
"volume" unit All PD meters manufactured by Isoil are individually calibrated and tested on a test bench using a calibrated tank with a volume corresponding to the volume measured by the meter at the maximum flow rate in two minutes work time.
Isoil Impianti's testing room is officially approved as SIT Centre (Italian System of Indipendent Calibration Laboratory) for positive displacement meter calibration and for calibrated tanks as well.
In order to allow periodical calibrations of its PD meters on site, Isoil Impianti provides two easy and reliable tools:
Proving tanks
Available from 10 litres up to 25,000 litres size, the calibrated tanks manufactured by Isoil Impianti are suitable for the periodic calibrations of the flow meters. They are available both in carbon Steel and Stainless Steel, according to the application requirements. In order to allow to use just one tank for several meters, the Isoil Impianti tanks are also available on wheels, to move easily around the depot, thus reducing the number of proving tanks required.
Master Meters
A good alternative to the calibrated tanks is the master meter, i.e. a PD meter manufactured with very strict tolerances and,
therefore, granting higher accuracy. The master meter is very carefully calibrated on several points of the working flow range and comes out together with a diagram stating precisely the error curve which, therefore, can be taken into account while calibrating other flow meters by comparison. To aid mobility, master meters can be trolley mounted, with the option of hoses and couplers. | 
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