Roots Prover

Roots® Transfer Prover is an integrated computer controlled system for verification and testing of rotary, diaphragm, and turbine gas meters.



After the field meter is connected to the Prover and the test sequence is selected, the remainder of the operation is “hands-off.” Test sequencing is automatically controlled by the software settings and the test results are displayed on the computer screen.

The different models of Roots® Provers available are:

  • 10M or 2M / 10M Prover
  • 5M / 20M PROVER

10M or 2M / 10M Prover
10M or 2M/10M master meters- Capacities:
10M: 100 to 10,000 ACFH
(11 to 283 m³/h)2M: 35 to 2,300 ACFH
(1 to 57 m³/h)2M Meter mounted in a Piggy-Back” configuration
Suitable for both field and shop use
Easily transported in a van or truck


5M / 20M Prover


The cart-mounted prover gives you the increased capability to prove rotary, turbine and diaphragm meters up to 20,000 acfh, while occupying minimal floor space.

10M/80M Proving System
10M and 80M master meters Capacities:
80M: 1,600 to 80,000 ACFH (45 to 2,265 m³/h)
10M: 100 to 10,000 ACFH (11 to 283 m³/h)


  • Skid Mounted Shop System
  • Ideal for testing large capacity rotary and turbine-type gas meters