Litre Meter has developed a new volumetric rig specifically for calibrating ultra-low flow meters for chemical injection applications.
Unveiled at Offshore Europe, the temperature-controlled volumetric low-flow calibration rig delivers automatic calibration of flow meters and instrumentation within a flow range of 0.0006 to 50 l/hr to an accuracy of 0.2 per cent and a repeatability of 0.05 per cent.
Accuracy is much greater and uncertainty is much lower than was previously achievable using volumetric calibration.
All the associated tanks, pumps, ultra-sonic sensors, pressure gauges and temperature probes are housed in a compact and maneuverable temperature-controlled cabinet.
Now commercially available from Litre Meter, the new volumetric low-flow calibration rig can measure any fluid type within reason and features a reverse flow testing facility.
Charles Wemyss, CEO of Litre Meter, said: “We recently introduced our LF03 low-flow VFF rotary piston meter taking the capability of our VFF flow meter range down to lower flows than ever before – for example, on a fluid with a viscosity of 10 cSt the LF03 will measure down to 0.06 litres/hour at pressures of 1 bar right up to 4,000 bar.
“As a result of this innovation the next logical step was to develop a calibration rig capable of accurately measuring ultra-low flow rates. We were so happy with the results that the decision was made to make the volumetric low flow calibration rig available on the open market.”