Compressed natural gas filling machine verification device detection process
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1filling machines and test equipment visual inspection: verification was seized before the appearance of the dispenser to check to see whether the normal operation of the dispenser use. Filling high-pressure hoses for damage straight bend. Compressed natural gas filling machine 12V DC power supply test equipment and car cigarette lighter socket connection is reliable.
2the filling machine with nozzles directly into the filling machine test standard device bottom right of the inlet to ensure reliable connection and nozzles is turned off then connect the standard device nozzles and test equipment to determine the firm will nozzles into the gas cylinder or in the station car gas tank
3open the test valve device and filling machine guns test equipment by a few seconds without filling test measurement test equipment or holding nozzles and open close the valve on the exhaust air twice. Every time you open the valve that time is not more than two seconds off. Pipeline in order to test the original air exclusion device. Special attention should also be observed in this pipe valves nozzles and other parts of the sealing connection is intact leak immediately turn off any CNG filling machine nozzles by the relevant professional and technical personnel fastening joints to ensure The good sealing performance.
4the nozzles into the car test device interface or a dedicated storage tank cylinder interface open the valve slowly pressurized nozzles gas cylinders for automotive interface or tank for 1 to 2 times the filling operation is complete ventilation test. Through the ventilation running CNG dispenser device with test data comparison.
5test devices were recorded by the gas filling machine and the standard equipment of the gas value for money in order to calculate the dispenser indication error. At the same time the original records storage and automatic computer generated the certificate. CNG dispenser test device works as a standard table method the main table as a quasi-control precision Coriolis mass flow meter's volume.
6after the first test off compressed natural gas filling machine test the device close the laptop power supply. Gas cylinder from the vehicle interface or a dedicated interface to remove the gas tank test equipment nozzles air vent valve open nozzles.
7the test device from the interface into the gas removed was seized CNG dispenser nozzles guns hanging reset.
