How is the accuracy of flow meters and other flow meters graded?

Abstract: The information on how the accuracy of flow meters and other flow meters is graded is provided by excellent flow meter and flow meter manufacturers. In practical applications, under the condition of the same accuracy of the selected instrument, considering the range of the actual measured flow value, try to compress the range of the instrument to make it the closest to the measured value to achieve the purpose of improving the measurement accuracy. It will compare to something that measures 1cm with a ruler. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how the accuracy of flowmeters and other flowmeters is graded. In practical applications, under the condition of the same accuracy of the selected instrument, considering the range of the actual measured flow value, try to compress the range of the instrument to make it the closest to the measured value to achieve the purpose of improving the measurement accuracy. It is the same reason that measuring 1cm with a ruler is more accurate than measuring with a meter ruler. Taking electromagnetic flowmeters as an example, the performance of general-purpose types on the market is quite different. Some have high precision and multiple functions, and some have low precision and simple functions. The basic error of the instrument with high precision is (±0.5%～±1%) R, the instrument with low accuracy is (±1.5%～±2.5%) FS, the price difference between the two is 1 to 2 times. Therefore, it is not economical to use high-precision instruments in places where the measurement accuracy is not very high (for example, non-trade accounting is only for control purposes, and electromagnetic flowmeters only require high reliability and excellent repeatability). Some models of meters claim higher accuracy, with a fundamental error of only (±0.2%～±0.3%) R, but there are strict installation requirements and reference conditions, such as the ambient temperature of 20 ~ 22 ℃, the length of the front and rear straight pipe sections is required to be greater than 10D and 3D (usually 5D and 2D) respectively, and it is even proposed that the flow sensor should be connected to the front and rear straight pipes. The tube is integrated to perform real flow calibration on the flow standard device to reduce the effect of clamping. Therefore, when comparing various models, do not simply look at the high indicators. The vortex flowmeter should read the manufacturer's samples or instructions in detail for comprehensive analysis. The functions of EMFs on the market are also very different. The simple one is to measure one-way flow, and only output analog signals to drive the rear instrument; , small signal removal, flow display and total calculation, automatic check and fault self-diagnosis, communication with the host computer and motion configuration, etc. The serial digital communication function of some models of instruments can choose a variety of communication interfaces and special chips (ASIC), and the turbine flowmeter can be connected to the HART protocol system, PROFTBUS, Modbus, CONFIG, FF fieldbus, etc. The premise of using EMF is that the liquid to be tested must be conductive and not lower than the threshold (ie lower limit). If the conductivity is lower than the threshold, it will cause measurement error or even cannot be used. If it exceeds the threshold, it can be measured even if it changes. The indication error does not change much.×10-6) between S/cm, depending on the model. The use also depends on the length of the flow signal line between the sensor and the converter and its distributed capacitance. The manufacturer's instruction manual usually specifies the length of the signal line corresponding to the conductivity. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to classify the accuracy of flow meters and other flow meters'

u shape coriolis mass flow meter mass flow meter processes have been widely used to produce tuning fork liquid density meter such as coriolis mass flow meter emerson, v shape coriolis mass flow meter, and low flow turbine flow meter etc.

You can find a large selection of quality at Sincerity Flow Meter. Go get your desired one.

There are ample scientific evidence of reducing the risk of rosemount coriolis mass flow meter.