Fluid characteristics of Burkert electromagnetic flow meters

The fluid characteristics of Burkert electromagnetic flowmeter can be considered from five aspects, which are flowmeter instrument performance, fluid characteristics, installation conditions, environmental conditions and economic factors. The detailed factors in the five aspects are as follows. In terms of instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.; in terms of fluid characteristics: temperature, pressure, density, viscosity, Chemical corrosion, abrasiveness, scaling, miscibility, phase change, electrical conductivity, sound speed, thermal conductivity, specific heat capacity, isentropic index;

Pipeline layout direction, flow direction, length of straight pipe section upstream and downstream of the test piece , pipeline diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, air eliminator), installation, etc.; environmental conditions: ambient temperature, humidity, electromagnetic interference, safety, explosion-proof, pipeline vibration, etc.; economic factors: Instrument purchase fee, installation fee, operation fee, calibration fee, maintenance fee, instrument service life, spare parts, etc. The steps for flowmeter instrument selection are as follows: Select the available instrument types based on the type of fluid and five considerations (there must be several types for selection);

Provide data and price information for the preliminary types. Collection to prepare conditions for in-depth analysis and comparison; use the elimination method to gradually focus on 1 to 2 types, and repeatedly compare and analyze the five factors to finally determine the pre-selection target. Fluid characteristics mainly refer to the pressure, temperature, density, viscosity, compressibility, etc. of gas. Since the volume of gas changes with temperature and pressure, you should consider whether to compensate for the changes. Instrument performance refers to the accuracy, repeatability, linearity, range ratio, pressure loss, starting flow, output signal and response time of the instrument.

When choosing a flow meter, you should carefully analyze and compare the above indicators, and choose a flowmeter that can Instruments that meet the flow requirements of measurement media. Installation conditions refer to the gas flow direction, pipeline direction, length of upstream and downstream straight pipes, pipe diameter, spatial location and pipe fittings, etc. These will affect the accurate operation, maintenance and service life of the gas flow meter. Economic factors refer to purchase fees, installation fees, maintenance fees, calibration fees and spare parts, etc., which are also affected by the performance, reliability, lifespan, etc. of the gas flow meter.

Accuracy level and function Select the instrument accuracy level according to the measurement requirements and usage occasions to achieve economical results. For example, when it is used for trade settlement, product handover and energy measurement, the accuracy level can be selected, such as level 1.0, level 0.5, or higher. When it is used for process control, different accuracy levels can be selected according to the control requirements. In some cases where it is just to detect the process flow without control and measurement, you can choose a slightly lower accuracy level, such as level 1.5, level 2.5, or even level 4.0

In this case, you can choose a low-price plug-in type When measuring the medium flow rate, instrument range and caliber of the electromagnetic flowmeter to measure general media, the full-scale flow rate of the electromagnetic flowmeter can be selected within a wide range of the measurement medium flow rate of 0.5-12m/s. Select instrument specifications (ordiameter) is not necessarily the same as the process pipeline, it should be determined based on whether the measured flow range is within the flow rate range, that is, when the pipeline flow rate is too low to meet the requirements of the flow meter or when the measurement accuracy cannot be guaranteed at this flow rate, the meter diameter needs to be reduced. Thereby increasing the flow rate in the tube and obtaining satisfactory measurement results. For more product information, please click → Fluid Characteristics of Burkert Electromagnetic Flowmeter