3D model of Automated Systems for Loading and Metering of Liquefied Petroleum Gas with the main elements description
Automated Systems for loading and metering of LPG are designed for the automatic delivery/acceptance and automated metering of oil and LPG in mass and/or volume units at the loading/discharge stations for rail and car tanks at the refineries and gas stations.
Principle of operation is based on the fact that LPG loaded into the rail tank cars passes through the mass flowmeter Micro Motion (or its analogue) installed on the pipeline of the liquid phase. Parallel to this diversion of the gas phase from the rail tank car for pressure equalizing is carried out. Diverted gas passes through the mass flowmeter Micro Motion (or its analogue) of a smaller diameter installed on the pipeline of vapor phase of LPG. Mass of delivered LPG is determined as the difference of mass flowmeter values of
Calibration of mass flowmeters of the loading station is performed with the help of Mobile Master Meter (MMM).
MMM is equipped with master mass flowmeter Micro Motion (or its analogues) connected sequentially with mass flowmeters of the loading station prior to loading/discharge operations.
Mass flowmeters of MMM are calibrated by master test measure or by other method. Manufactured according to Technical specifications 4213-010-9571- 5144-2011.
|1||Maximum permissible relative error for weighing of LPG||±0,25|
||Upper range liquid phase flowrate value||On request|
Upper range vapor phase mass flowrate
|4||Density measurements range||
From 0 to 2000
|5||Maximum permissible absolute error of density measurement||± 0,5 kg/m3|
|6||Temperature measurement range||
Maximum permissible absolute error of temperature measurement
|8||Pressure measurement range||0-5520 кPа|
|9||Maximum permissible relative error of pressure measurement||
LPG metering units manufactured by OGSB provide the following basic functions:
Mobile Master Meter is designed for mass calibration of the mass flowmeters, loading/discharge units, fluid meters, fuel dispensers and the other equipment for oil and LPG mass and volume metering. MMM is a device assembled on a single skid base comprising Micro Motion flowmeter(s), flow computer, pressure and temperature transmitters, piping, junction box, cabling. The meter is available in mobile and stationary versions.
Advantages of MMM over standard volumetric test measure or meter prover:
Manufactured according to Technical Specifications 4213-010-9571-5144-2011.