KOBOLD electromagnetic flowmeter features and principle

The biggest features and principles of KOBOLD electromagnetic flowmeter

KOBOLD flowmeter uses the movement of conductors in a magnetic field to generate induced electromotive force, and the induced electromotive force is proportional to the flow rate. It is made based on the principle of measuring electromotive force to reflect pipeline flow. Its measurement accuracy and sensitivity are both high. It is often used in industry to measure the flow rate of water, slurry and other media. KOBOLD flowmeter can measure the largest pipe diameter up to 2m with minimal pressure loss. However, media with low conductivity, such as gas, steam, pure water, etc., cannot be used. The flow meter is designed based on the principle that the speed of ultrasonic waves propagating in the flowing medium is equal to the geometric sum of the average flow speed of the measured medium and the speed of the sound wave itself. KOBOLD flowmeter also reflects the flow rate by measuring the flow rate.

Working principle: A new type of flow meter that uses the vibration generated by the unbalanced pressure difference caused by fluid flowing in a specific pipeline to measure. Features of KOBOLD flowmeter: High precision, high turndown ratio, lowest pressure loss, etc. The measurement part has no moving parts, has a simple structure, is easy to clean and maintain, and does not need to be recalibrated after cleaning. Different electronic parts can be selected according to needs to save customers' costs. According to the measurement principles, there are mechanical principles, thermal principles, acoustic principles, electrical principles, optical principles, atomic physics principles, etc. According to the most popular and extensive classification method at present, it is divided into: volumetric flowmeter, differential pressure flowmeter, float flowmeter, turbine flowmeter, electromagnetic flowmeter, vortex flowmeter in fluid oscillation flowmeter, mass flowmeter Flowmeters, insertion flowmeters, and probe flowmeters will respectively explain the principles, characteristics, application profiles, and domestic and foreign developments of various flowmeters.

The biggest feature of the flow controller is that when the pressure difference between the inlet and outlet of the self-operated flow control valve changes, the flow rate through the self-operated flow control valve remains constant.

The performance parameters of the automatic flow control valve include: flow control accuracy, working pressure difference range, and starting pressure difference.

Flow control accuracy refers to the error of the control flow of the automatic flow control valve. The error requirement in the industry standard is less than or equal to 8%, and the error of Class A products is less than or equal to 5%. The accuracy of flow control depends on the design, processing and material of the flow controller.

The working pressure difference range refers to the range within which the pressure difference between the inlet and outlet of the flow controller changes, and the flow rate through the automatic flow control valve can be kept constant. Industry standards stipulate that the working pressure difference range is 0.03-0.3MPa, and the working pressure difference range of Class A products reaches 0.03-0.4MPa. The size of the working pressure differential range depends on the design of the self-operated flow control valve.

Starting pressure difference refers to the minimum pressure difference required when the automatic flow control valve reaches the set flow rate. This parameter is an important parameter, it is actually the minimum pressure difference value in the working pressure difference range. According to the industry standard working pressure difference, the starting pressure difference is 0.03MPa. The size of the starting pressure difference depends on the self-controlled flow rateDesign and processing of control valves.

When fluid flows through a turbine flow meter, the fluid causes the rotor to rotate. The rotation speed of the rotor is related to the speed of the fluid. The flow rate or total volume is derived from the average flow rate of the fluid felt by the rotor. Turbine flow meters accurately measure clean liquids and solids. Like PD meteorometers, turbine flowmeters also produce unrecoverable pressure differences and require moving parts. KOBOLD Volume Meteor (PD) PD flow meter is used to measure the volume flow rate of liquid or gas. It introduces the fluid into the measurement space and counts the number of rotations. Impellers, gears, pistons or orifice plates are used to divert fluid. PD flowmeter has high accuracy and is one of several ways to measure viscous liquids. But it also produces recoverable pressure errors and requires moving parts. KOBOLD Electromagnetic Flowmeter When a conductive fluid flows through an electromagnetic field, the velocity of the fluid can be obtained by measuring the voltage. No moving parts and unaffected by fluids. Measures conductive liquids with high accuracy when the pipe is full. Electromagnetic flowmeters can be used to measure the flow rate of slurry fluids. Differential Pressure Flow Meters This is a common flow technology that includes orifice plates, venturis, and sonic nozzles. DP flow meters can be used to measure the flow rate of most liquids, gases and steam. DP flowmeter has no moving parts, is widely used and easy to apply. But after it is blocked, it will generate ranks and affect the accuracy. The accuracy of flow measurement depends on the accuracy of the pressure gauge. KOBOLD Ultrasonic Meteor Propagation Time Method and Doppler Effect Method are methods commonly used by ultrasonic flowmeters to measure the average velocity of fluids. Like other speed meters, it is an instrument that measures volumetric flow. It is a unique flow meter. If the ultrasonic transmitter is installed outside the pipe, there is no need to insert it. It is suitable for almost all liquids, including slurries, with high accuracy. However, the contamination of the pipes will affect the accuracy.