Examination of Vapor-measuring Devices for Liquefied Petroleum Gas: A Manual for Weights and Measures Officials, Issue 117U.S. Department of Commerce, National Bureau of Standards, 1975 - 18 pages |
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Page 2
... supply pipe passes . This method of construction reduces the amount of oil required to seal the bell and when raised off the floor by the prover base permits more rapid temperature adjust- ment of the oil . 100 IOON WHI QUAIANOJILTUH ...
... supply pipe passes . This method of construction reduces the amount of oil required to seal the bell and when raised off the floor by the prover base permits more rapid temperature adjust- ment of the oil . 100 IOON WHI QUAIANOJILTUH ...
Page 3
... supply such a combination scale . Bell - type meter provers are normally used for pressure proving , that is , with the provers loaded to a pressure about 1.5 in of water above atmos- pheric pressure . To change the prover pressure ...
... supply such a combination scale . Bell - type meter provers are normally used for pressure proving , that is , with the provers loaded to a pressure about 1.5 in of water above atmos- pheric pressure . To change the prover pressure ...
Page 10
... supply is required for provers this would generally be obtained from a blower system or from a compressed air line . Care should be exer- cised that the temperature of the air supply to the prover is not different from proving room ...
... supply is required for provers this would generally be obtained from a blower system or from a compressed air line . Care should be exer- cised that the temperature of the air supply to the prover is not different from proving room ...
Page 14
... supply . Record the volume of air ( cu ft ) registered by the device in 1 hour . The error of the meter may be calculated as follows : Error in Delivery ( % ) = - Vol . Low Flow Rate Cap – Meter Indication Meter Indication × 100 If the ...
... supply . Record the volume of air ( cu ft ) registered by the device in 1 hour . The error of the meter may be calculated as follows : Error in Delivery ( % ) = - Vol . Low Flow Rate Cap – Meter Indication Meter Indication × 100 If the ...
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Common terms and phrases
adapter fittings Altitude corrections factors atmospheric pressure automatic data processing Bureau of Standards butane calibration capacity rate commercial Corrected Prover Volume Corrected to 60 correction factors metric cubic feet cubic foot bottle cubic foot standard cubic meter customary units cycloid Devices for Liquefied diameter differential pressure gage Error in Delivery Examination of Vapor-Measuring Exterior view FIGURE Indication Meter Indication leak liquefied petroleum gas LPG Vapor Meter measures officials Measuring Devices metal Meter Indication Meter Meter Proving Circle meter under test metric units National Bureau Office orifice plate portable cubic foot position pressure drop prover bell prover oil prover outlet valve prover pressure prover room prover scale prover tank prover valve proving room psia Rate cap holder sample report form sealing liquid sealing medium Specific Gravity strapping temperature compensated meter Test data section test hand Test Report Form thermometers U.S. DEPARTMENT U.S. Government Printing Vapor-Measuring Devices weights and measures