5
18. Controller
– An aluminum or steel rectangular box with a 6 in. finned heat sink on the side
of the box and a number of sockets for electrical and computer connections.
19. Blowers
-– Devices attached to the Prover cart, responsible for producing a source of
airflow during Prover testing.
20. Master Meter(s)
– The reference meter (tertiary standard) with known performance
characteristics that is traceable to national and international standards. The Prover may be
purchased with one or two Master Meters.
21. Master Meter Cable
– A cable containing a 6-pin connector at each end.
22. Master Meter Junction Box
– A rectangular box mounted to the end cover of the
Master Meter(s).
23. Throttle Valve
– An electrical actuator used to aid in the flow rate control for the prover.
1.4 Optional Accessories:
• Optical Scanner
• ROOTS 8C Meter Test Hardware Assembly
• ROOTS Series B3 Field CTR Pulser (MTR must be “Pulser Ready”)
• Acoustic Filter
• Inverter
• 3" Quick-disconnect Connector (Female)
• 3" Quick-disconnect Connector (Male)
• SmartProve
™
Cable
• USB Serial Port Converter Kit
1.5 Theory of Operation
The Prover operates as a transfer test. The meter under test (Field Meter) registers volume and compares
it to the volume registered by a Master Meter. Blowers are used to pull a vacuum, which draws ambient
air into the Field Meter and through a connecting hose directly into the Master Meter.
In the normal test set-up, the mass of air passes through the meter under test and then through the Master
Meter. Since the Master Meter’s characteristics are known, the meter under test can be characterized based
on the difference in its performance parameters as compared to the Master Meter. This difference in
performance is expressed in terms of accuracy (proof and percent error are also displayed).
1.6 Precautions
• No copies of this disk or any of the information contained there on shall be used
for any purpose other than to operate the Model 5 ROOTS Prover.
• Do not operate the Model 5 ROOTS Prover in the presence of flammable gas or
an explosion may result.
• Do not operate the Model 5 ROOTS Prover in the rain or while standing in water
in order to avoid a potential electrical shock.
• Check upstream and downstream blocking or bypass valves to ensure that they operate
properly and are leak tight in the closed position before powering any device.
