OIML D 36 • Pipe provers for verification and calibration of measuring systems for liquids

A.1 Test procedure for measuring systems for liquid fuel

Two typical installations, in which a pipe prover and a measuring system for liquid fuel are connected, are shown in Figures A.10 and A.11 . The basic test procedure for these systems is as follows:

  1. Carry out a sufficient number of preliminary runs.

  2. Locate the displacer at the starting position, reset the pulse counter and interval timer.

  3. Start the displacer in movement. Ensure that both the pulse counter and the interval timer start when the start detector is activated.

  4. While counting pulses, read and record the temperature and pressure of the pipe prover and the measuring system.

  5. Check that both the pulse counter and the interval timer stop when the end detector is activated.

  6. Read and record the indicated results of the pulse counter and the interval timer.