{"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":null,"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.\n\n(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.\n\n(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.\n\n(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.\n\n(4) A test of an orifice meter shall consist of tests of the recording gauges, and the removal, inspection and measurement of the orifice.\n\n(5) Temperature-compensated gas displacement meters when tested shall be proved to a base temperature of 60° Fahrenheit.\n\n(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}