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
... liquid and used as a gas at normal atmospheric pressures and temperatures . low - flame test . A test simulating extremely low - flow rates such as pilot flow rates caused by pilot lights . m3 / h . Cubic meters per hour . meter ...
... liquid and used as a gas at normal atmospheric pressures and temperatures . low - flame test . A test simulating extremely low - flow rates such as pilot flow rates caused by pilot lights . m3 / h . Cubic meters per hour . meter ...
Page 3
... liquid , the pressure would de- crease , due to the increase of the volume of the submerged portion of the bell , if it were not for the shape of the cycloidal lever arm . This is designed so that as the prover bell descends into the liquid ...
... liquid , the pressure would de- crease , due to the increase of the volume of the submerged portion of the bell , if it were not for the shape of the cycloidal lever arm . This is designed so that as the prover bell descends into the liquid ...
Page 4
... liquid have equalized . Raise the prover bell and set the marker at zero on the scale or read out device . If there is any noticable change in indication in a 10 - minute period , determine the cause and make the necessary corrections ...
... liquid have equalized . Raise the prover bell and set the marker at zero on the scale or read out device . If there is any noticable change in indication in a 10 - minute period , determine the cause and make the necessary corrections ...
Page 5
... liquid , similar to prover oil . As the liquid enters at the bottom and fills the interior up to a graduation mark on the gage glass in the upper neck . 1 cu ft of air is displaced and flows through a connecting tube to the prover bell ...
... liquid , similar to prover oil . As the liquid enters at the bottom and fills the interior up to a graduation mark on the gage glass in the upper neck . 1 cu ft of air is displaced and flows through a connecting tube to the prover bell ...
Page 6
... liquid surface , or " seal . " The validity of the method is based on this rela- tionship : When a prover bell is ... liquid surface . B = Change in interior volume of the bell above the liquid surface . W = Volume of liquid rise between ...
... liquid surface , or " seal . " The validity of the method is based on this rela- tionship : When a prover bell is ... liquid surface . B = Change in interior volume of the bell above the liquid surface . W = Volume of liquid rise between ...
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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