How to improve the measurement accuracy of turbine meter scale

Abstract: how to improve the measurement accuracy of the turbine meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Gas turbine flowmeter has high sensitivity, good repeatability, wide range than, high precision, etc. The trade settlement measurement has been widely applied in natural gas, and even as a standard of dissemination of the instrument. Along with our country and town gas project in full swing. More flow meter manufacturers choose model price quote you are welcome to inquire, here's how to improve the measurement accuracy of the turbine meter scale article details. Gas turbine flowmeter has high sensitivity, good repeatability, wide range than, high precision, etc. The trade settlement measurement has been widely applied in natural gas, and even as a standard of dissemination of the instrument. Along with our country town of fuel gas projects in full swing and the fuel gas trade, the handover measurement requirements unceasing enhancement, the gas turbine flowmeter has gradually become our country town gas is one of the commercial trade and the measuring instrument of choice for handover. A, the principle of turbine flowmeter turbine flowmeter is a kind of speed meter, using gas driven flow meter impeller rotation, the impeller rotating speed is proportional to the fluid volume flow, according to the principle of electromagnetic induction, using magnetic sensor from synchronous rotation of the impeller on the induction and fluid volume flow rate is proportional to the pulse signal, the processing volume flow are obtained. Its measuring accuracy is higher, the precision can reach 1. Level 0, 1. Level 5; Range than wide, is commonly and wide measurement range; Straight pipe before and after the structure is compact and lightweight, easy maintenance requirements is low, can be used for medium and high voltage measurement. Second, error causes the turbine flowmeter is also the following disadvantages: there are moving parts, easy to damage, key-module bearing is easy to wear and dirt resistance is poor, higher requirements of the clean degree of the medium, hard to maintain calibration characteristics for a long time, need to check on a regular basis. The causes of error are: meter itself quality problem, unreasonable design selection, installation does not reach the designated position, in the operation of the improper maintenance, etc. Third, how to control the error ( A) Right to determine the flow meter using places and specifications. As a result of the existence of turbine flowmeter turbine inertia, frequent fluctuations in flow situation should not be used, otherwise it will reduce the measuring accuracy. To more accurately estimate the gas peak value and medium pressure situation, correctly determine the specifications of the flowmeter. Can be seen from the error characteristic curve of turbine flow meter, flow meter should be brought the work flow range of Qmax - 20% 80% qmax ( Qmax zui big flow of flowmeter) （ 2) 1 turbine flowmeter installation requirements. Gas turbine meter must be installed before the filter; Should keep clear of the filter, if found that the filter blocking ( But by filter in and out of the pressure difference) to judge , should be timely to clean the filter, if not with differential gauge cleaned once a month. 2. To ensure that the requirements of the straight pipe, especially before the table with reducing or partially open the valve. 3. Installation, the gasket may not into the pipe, the flow meter visual shall not have obvious deviation to the pipe axis, shall not be installed stress. 4. When installation to must do all the impurities, clean the pipe to prevent bearings and turbine. （ 3) 1 turbine flowmeter operation management and maintenance requirements. Turbine flowmeter of ventilation and gas requirements. Ventilation order: ensure the backend flow valve closed; Then slowly open flowmeter front-end valves, ensure booster speed & le; 35 kpa / S; Zui slowly open flowmeter after the valve, make the small flow run until to need to adjust. Keep the whole process has started. After stopping air order: first slowly closing meter end valves; Then slowly closing flowmeter front-end valves. 2. To prevent excessive run for a long time. Super flow operation will seriously affect the service life and reduce the measurement accuracy, which resulted in increased error;

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