Remote transmission glass rotor flowmeter | River Doppler flowmeter manufacturer

『Remote transmission glass rotor 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. Measurement method and instrument selection of rotor flowmeter. The measurement method of rotor flowmeter is mainly based on the principle of variable area, and the flow value is determined by observing the stable position height of the float in the conical tube; The selection of instruments should be based on the characteristics of the medium, pipe diameter, flow range, and environmental conditions to choose glass or metal materials, and consider the type of output signal and additional functions. The following is a specific explanation: Basic principle of measurement method: The rotor flowmeter consists of a vertical cone tube and a freely movable float. When the measured medium flows from bottom to top through the conical tube, the float rises due to the action of flow velocity and buoyancy, and the annular gap area increases accordingly. The decrease in flow velocity leads to a decrease in differential pressure until the lift force exerted on the float is balanced with the weight immersed in the fluid. At this point, the height of the float position corresponds to the flow rate, and the flow rate value is directly displayed through magnetic coupling or mechanical indication. Key process: Medium flow: Fluid flows in from the lower end of the cone tube, impacts the float, and generates a force. Float balance: When the force applied is equal to the displayed weight of the float, the float remains stable at a certain height. Flow reading: By using the scale or magnetic sensor output signal on the cone tube, the instantaneous flow rate or cumulative flow rate can be directly read. Anti collision design: Guiding core rod: Install a guiding core rod at the center of the float to ensure that it moves along the centerline of the cone tube. Slant groove structure: A groove is opened at the edge of the float disk, which generates a reverse thrust when the fluid passes through, causing the float to rotate and avoiding contact with the pipe wall. Instrument selection based on material: Glass rotor flowmeter: suitable for small diameter (usually DN<25mm) corrosive media such as acid, alkali, etc., but should be avoided for high pressure or fragile environments. Metal rotor flowmeter: commonly used in industry, suitable for high temperature, high pressure, corrosive or non transparent media, with a pipe diameter range of DN15-DN150, and materials such as stainless steel and titanium alloy can be selected. Select by measurement range: For small flow measurement, glass rotor flowmeter is preferred, with a minimum flow rate of up to 0.1L/min. High flow measurement: Metal rotor flowmeter is selected, with a maximum flow rate of up to 1000m3/h. Select according to output signal: Local indication type: directly read through the cone tube scale, suitable for simple working conditions. Electric remote transmission type: Yuma is equipped with magnetic sensors, analog-to-digital conversion modules, and microprocessors, which can output 4-20mA signals, pulse signals, or RS485 communication, supporting remote monitoring and cumulative flow calculation. Select according to environmental conditions: High temperature environment: Choose metal materials and configure heat dissipation structures. Explosion proof requirement: Choose explosion-proof metal rotor flowmeter, suitable for flammable and explosive places. Hygiene requirements: The food and pharmaceutical industries require the use of stainless steel material without socks and surface polishing trea

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