# PSC 134.28 Meter testing.

- **operation:** document
- **citation:** Wis. Admin. Code § PSC 134.28
- **title:** PSC 134.28 Meter testing.
- **source type:** regulation
- **agency:** Public Service Commission of Wisconsin
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 1989-12-01
- **summary:** Complete current PSC 134.28 from official Wisconsin Legislature sources (gas-utility-service).
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/wi-psc-134-28.json
- **markdown:** https://regulus.evalyn.ai/document/wi-psc-134-28.md
- **app url:** https://regulus.evalyn.ai/document/wi-psc-134-28
- **source url:** https://docs.legis.wisconsin.gov/document/administrativecode/PSC%20134.28
**body:**

PSC 134.28 Meter testing.

(1) Each meter test of a diaphragm type meter with a capacity of 2,400 cubic feet per hour or less shall consist of one proving at a rate of flow of 15 to 30% of the rated capacity of that meter and one proving at a rate of flow at 90 to 120% of the rated capacity of the meter. The capacity of the meter for test purposes shall be the capacity at one-half inch water column differential pressure.

(2) Each meter test of a diaphragm type meter having a capacity greater than 2,400 cubic feet per hour shall consist of one proving at a rate of flow of 15 to 30% of the rated capacity of that meter and one proving at a rate of flow of 90 to 120% of the rated capacity of the meter but not less than 2,500 cubic feet per hour. The capacity of the meter for test purposes shall be the capacity at one-half inch water column differential pressure.

(3) Rotary meters shall be tested at 2 loads with the minimum load at 10% of rating by the use of a portable or volumetric meter or other approved proving devices, or be given a differential test. In the latter case an original test record shall be set up immediately after installation; future differential test results shall be recorded and compared with the original test record.

(4) A test of an orifice meter shall consist of tests of the recording gauges, and the removal, inspection and measurement of the orifice.

(5) Temperature-compensated gas displacement meters when tested shall be proved to a base temperature of 60° Fahrenheit.

(6) Turbine-type meters shall be tested at 2 loads with the minimum load at 10% of rating by the use of a portable or volumetric meter or other approved proving devices, or be given a turbine blade, rotor and gear assembly spin test, either by manual or velocity rotation. Before a particular type turbine meter can be used, the manufacturer must file with and be accepted by the commission a minimum coasting time which will satisfactorily indicate the operating condition of the internal metering mechanism. For the spin test method a test record shall be set up; and the original and subsequent spin test results shall be recorded and compared with the specified minimum coasting time as filed with the commission for that type meter.
- **truncated:** false
- **body characters:** 2256