Effectively prevent gas flowmeter of scale appeared error

Abstract: the effective avoided gas flow meter scale quantity error information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. There are three kinds of gas flow metering methods: measurement, volume flow to mass flow measurement and energy flow measurement, the traditional natural gas measurement in volume units. In recent years, with mass and energy unit of measurement has become a development trend. The large capacity. More flow meter manufacturers choose model price quote you are welcome to inquire, here is effective to avoid gas flowmeter of scale appeared error article details. There are three kinds of gas flow metering methods: measurement, volume flow to mass flow measurement and energy flow measurement, the traditional natural gas measurement in volume units. In recent years, with mass and energy unit of measurement has become a development trend. Priority in using the large capacity, high pressure natural gas metering unit of energy or mass. Early in our country did not attach enough importance to natural gas metering, gas metering technology develops slowly, since gas commodity metering a volume metering manner. The gas volume flow meters mainly orifice flowmeter, vortex flowmeter, turbine flowmeter, and volumetric flowmeter, we applied broader is the standard orifice flow meter. 1, the problems existing in the measurement standard orifice flowmeter is a kind of indirect, integrated technology of measuring parameters, using instrument, more complex factors. Under normal circumstances the measurement accuracy can meet GB2624 - And SY/T6143-93 standards 1996 gas flow standard orifice metering method standard requirements. In real work, deviate from the provisions of the standard of the impact on the accuracy of measuring, some quantitative estimation and correction, but some can only qualitative estimate the amplitude and direction of uncertainty, but have a plenty of a variety of conditions at the same time, this creates a very complicated situation. Because general literature only introduce deviation error caused by a certain condition, the lack of a variety of conditions at the same time deviation of measurement errors when the relevant information. A large number of field survey and the practical experience shows that the main reason for the measurement problem is throttling device design, manufacture, installation, use and the scope of the deviation from the standard conditions. The main performance is as follows: no strict according to SY/T6143 - 1996 standards for design, manufacture and installation. Choose to measure the diameter is too big, long-term low Reynolds integer, upstream and downstream section not according to the standard required to install facilities, pipe diameter is not measured. Orifice meter at a relatively stable velocity parameters as design basis, the traffic is too small or too metropolitan increase measurement error. To correctly choose and use differential gauge. If the differential gauge working range below 30%, will greatly reduce the flow measurement accuracy. When the gas flow rate decreases, to timely replace the differential gauge range or orifice plate specifications, or caused by differential pressure measurement error will multiply. When choosing instrument differential pressure range, that is, to consider the aperture ratio, and to consider whether or not the orifice pressure loss after to meet production needs. Flange pressure and Angle of pick up the value of pressure aperture ratio should be 0. 2 to 0. Between 75, general appropriate choice in 0. 4 to 0. 6 between, such, can ensure the accuracy of measurement, and can reduce the pressure loss. 2, using special flow computer integrating plan using modern mathematics special integrating computer technology, according to the user's requirements for all kinds of traffic ( And the volume flow to mass flow) Precise calculation, automatic continuous flow for all or part of the compensation, as long as flow equation in each coefficient formula according to the requirements of a certain programming, can achieve the purpose of accurately integrating flow. 3, using orifice plate device may be substituted with fixed value throttling device can change the orifice throttling device is a new type structure of a major breakthrough in the throttle device, the throttling components accurately installed inside the fixed seat ( Body through flange and pipe connection) , without open pipe or lose, can easily raise orifice plate for inspection, cleaning or replacement, to ensure the accuracy of measuring. Using hydraulic lifting gear orifice light, especially suitable for large diameter orifice. The throttling device is also equipped with cleaning mechanism, can remove dirty dirty medium, for single well gas accurate measurement provides an effective way. Constant value throttling device to change the existing throttling device. According to calculation result processing of the aperture method, each kind of nominal diameter pipe with limited aperture throttling, aperture series according to the priority coefficient selection. Using fixed value throttling device is beneficial to product batch production, reduce the production cost. Removable orifice throttling device and fixed value orifice, will change the traditional mode of production, product seriation, generalization and standardization, realize the throttle device is beneficial to improve the accuracy of the throttle device measuring the above is all there is in this article, you are welcome to inquire me factory flowmeter selection, quotation, etc.
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