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『Selection of metal tube float flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Manufacturer of Doppler flowmeter
2. Remote transmission principle of metal tube float flowmeter
The core of the remote transmission principle of metal tube float flowmeter is to convert the axial displacement of the float that changes with the fluid flow rate into an electrical or digital signal that can be remotely transmitted, achieving off-site flow data acquisition and transmission.
1. Core components of remote transmission system (1) Non contact displacement detection unit 1 The mainstream use of magnetic coupling detection scheme: permanent magnetic steel is embedded inside the float, and the metal measuring tube is made of non-magnetic stainless steel material. When the fluid thrust is balanced with the gravity and buoyancy of the float, the float moves axially along the conical measuring tube, and the spatial position of the magnetic steel inside the float changes synchronously with the flow rate. Hall sensors and giant magnetoresistance sensor arrays installed on the outside of the measuring tube sense the magnetic field changes of the magnetic steel, convert the float displacement into continuous electrical signals, and do not need to penetrate the measuring tube to avoid the risk of medium leakage. Some scenarios also use capacitive and inductive detection schemes, which require signal transmission through insulation bushings or openings, with slightly lower adaptability than magnetic coupling schemes. （2） Xinzhao bending number conversion unit 1 Perform amplification, filtering, and linear calibration on the detected displacement electrical signals, and convert the displacement into corresponding flow values. Output standardized remote transmission signals: common types include 4
2. Complete Remote Transmission Workflow 1 The fluid flows into the conical metal measuring tube, and the float moves axially under the action of fluid thrust, buoyancy, and gravity until they reach equilibrium. At this point, the axial position of the float corresponds to the current fluid flow rate value. 2. The permanent magnet steel inside the float moves synchronously with the float, and the displacement detection element on the outside senses the magnetic field change and outputs an analog or digital electrical signal corresponding to the float displacement. 3. The signal conversion unit completes signal calibration, flow conversion, and format conversion, generating a remote transmission signal that meets industrial standards. 4. The remote transmission signal is transmitted to the remote monitoring equipment through wired or wireless sensing links, completing off-site flow monitoring, data recording, and remote control.
III. Safe use boundary 1 In the scenario of flammable and explosiv