Flowmeter proving apparatus
US5317895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Mar 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flowmeter proving apparatus for obtaining a reliable flow meter factor in a short time, using a flow-meter having a non-uniform pulse output with a small volume power. The flowmeter to be proved is connected in series with a small volume prover, using a by-pass valve. A CPU calculates irregularities of meter pulse spacing, determines the repeatability for a proving run from the number of counted meter pulses and a function given by the meter pulse number and the meter pulse space irregularity. The CPU then computes the proving pass number N.sub.p necessary for obtaining the required repeatability by substituting the repeatability value into another predetermined function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.