The measurement performance of differential pressure flowmeter has been improved

Requirements for range degree In the heating network, various users have very different requirements for the range degree of the heat energy metering system. Some users have continuous production, and the heat load is very stable throughout the year; For users with heating equipment as the main load, the flow rate in summer is quite different from that in winter; while there is another type of users who only produce in a single shift, and the heat load is zero most of the time. In general, however, range is an important consideration for instruments of this type. Among the commonly used heat energy metering instruments, the range of the vortex flowmeter is relatively large, with 0′^? 3 Take saturated steam as an example, the lower limit flow velocity of instruments with different calibers is slightly different, but the fluid flow velocity in the measuring tube is above 2^ 5^5.5 1^/8 and has entered the 'normal measurement range'. As long as the caliber is selected reasonably, a satisfactory range can generally be obtained. The range of differential pressure flowmeters is not as large as that of vortex flowmeters. In the development stage of using the 1.5 differential pressure gauge, it is generally accepted that its range can only reach 3:1. The factor restricting the range of differential pressure flowmeter is not only the accuracy of differential pressure meter, because when the relative flow rate is small, the outflow coefficient (^ and the expandability coefficient 6 have changed significantly, if they are still regarded as constant To deal with it, additional errors will be generated. Since the introduction of computer technology into the instrument, the measurement performance of the differential pressure flowmeter has been improved. The accuracy of the differential pressure transmitter has been improved from the previous 0, 5 levels to ^). Level 1, or even higher. The change of the outflow coefficient caused by the change of the measured flow in the whole range can be corrected in the programmable flow calculator [8]. Variations in the expandability factor 6 are also automatically corrected for a corresponding increase in range. Many researchers believe that 10:1 can be achieved. The lower limit flow billing function requires that if the flow rate is far lower than the minimum flow rate that guarantees accuracy, it will result in no output (such as a vortex flowmeter) or the output signal will be cut off as a small signal (such as a differential pressure flowmeter), which It is unfavorable to the supplier and unfair. In order to prevent the loss of benefits, for a specific set of heat energy metering equipment, the supplier and the buyer often agree on a certain flow value based on the flow measurement range and the range that can be achieved. Agree on the lower limit flow', and agree that if the actual flow is less than the agreed value, the charge will be charged according to the lower limit flow. This function is usually realized in the flow display instrument.

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Beijing Sincerity Automatic Equipment Co., Ltd aims to hire several additional experienced marketing professionals that can add to our existing talent-pool and help continue the steady growth of our business.

We began investing in our workforce and negotiated deals with major suppliers and providers to lower the cost of equipment so the technicians could enhance the competitiveness of mass flow meter right away.