4 Prover Wetting Procedure :1.If the prover is clean and free of debris, fill the prover with liquid from the meter device being checked. Fill the prover until the amount on the meter reads the nominal capacity of the prover. NOTE : The prover must be filled once and drained in order to wet the internal sides of the prover body. Wetting the internals of the prover helps ensure consistency in the amount of liquid that clings to the sides, from one test to the next. 2.Open the prover drain cock to drain the prover into its holding tank. Once the cessation of main flow breaks, as viewed through the sight flowmeter, wait 30 seconds and then close the drain valve. 3.The prover is now wet down and is ready for an official test. Conducting the Calibration with the 5 gallon prover: 1.Fill the special “J” prover until the amount on the meter reads the nominal capacity of the prover.2.Level the prover on its leveling ball coupling until the bubble in the circular level is in the center circle. 3.Identify the volume measurement on the scale by reading the meniscus in the gauge glass. Look directly from eye level to a horizontal line tangential to the bottom of the meniscus. Record the result 4.Compare the reading on the graduated scale to the meter reading. Document or record the difference in readings.
Seraphin® - 30 Indel Avenue – Rancocas, NJ 08073 Tel: 1-609-267-0922 Fax: 1-609-261-2546 e-mail: sales@seraphinusa.com Pub E91-4041