Turbine Flowmeter

When ultrasonic waves propagate in a flowing fluid, they carry information about the fluid's velocity. Therefore, the flow rate of the fluid can be detected by the received ultrasonic waves and converted into flow rate. According to the detection method, it can be divided into different types of ultrasonic flow meters such as propagation velocity difference method, Doppler method, beam offset method, noise method and correlation method.

The measurement principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The measuring tube of the flow meter is a short tube of non-magnetic alloy lined with insulating material. Two electrodes penetrate the tube wall along the diameter direction and are fixed on the measuring tube. The electrode tip is basically flush with the inner surface of the liner. When the excitation coil is excited by a bidirectional square wave pulse, a working magnetic field with a magnetic flux density B will be generated in the direction perpendicular to the axis of the measuring tube. At this time, if the fluid with a certain conductivity flows through the measuring tube, it will cut the magnetic field lines and induce electromotive force E. The electromotive force E is proportional to the product of the magnetic flux density B, the inner diameter of the measuring tube d and the average flow velocity V. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through the cable. After the converter amplifies the flow signal, it can display the fluid flow, and can output pulses, simulated current and other signals for flow control and regulation.

80GHz frequency modulated continuous wave (FMC radar product) supports four-wire and two-wire applications. Its span frequency can be as high as 7GHz, ensuring a high accuracy of 1mm. This product has multiple models, and the maximum range of the product can reach 80m, and There is no measurement blind zone. Because it has a higher working frequency and shorter wavelength, it has unique advantages in high dust and harsh temperature environments (+200°C). The instrument provides flange or thread fixation, making installation convenient and simple. Emitting The beam angle is less than 1 degree, and the measurement is not affected by on-site interference. This product is the first choice for high adhesion, high temperature, high pressure and other working conditions.