Flange type LWGY turbine flowmeter LWGY-50 card mounted turbine flowmeter

Description :

　　This product has obvious advantages such as compact structure, intuitive and clear reading, high reliability, no external power interference, lightning resistance, and low cost.

　　1、 Structural features and working principle:

　　1. Structural features

　　The sensor is a hard alloy bearing thrust type, which not only ensures accuracy and improves wear resistance, but also has the characteristics of simple structure, firmness, and easy disassembly and assembly.

　　2. Working principle

　　The fluid flows through the sensor housing. Due to the angle between the blades of the impeller and the flow direction, the impulse of the fluid causes the blades to have a rotational torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable. Under certain conditions, the speed is proportional to the flow velocity. Due to the magnetic conductivity of the blades, they are in the magnetic field of the signal detector (composed of magnetic steel and coils). The rotating blades cut the magnetic field lines and periodically change the magnetic flux of the coil, causing electrical pulse signals to be induced at both ends of the coil. This signal is amplified and shaped by an amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to a display instrument to display the instantaneous flow rate or total amount of the fluid.

　　2、 Technical parameters:

　　Execution standard: Turbine flow sensor (JB/T9246-1999)

　　Instrument diameter (mm) and connection method: 4, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80 adopt threaded connection

　　Accuracy level: ± 1% R, ± 0.5% R, ± 0.2% R (customized)

　　Range ratio: 1:10; 1:15； 1:20

　　Sensor material: 304 stainless steel, 316 (L) stainless steel, etc

　　Usage conditions:

　　Quality temperature: -20 ℃ to+120 ℃

　　Environmental temperature: -20 ℃ to+60 ℃

　　Relative humidity: 5% to 90%

　　Atmospheric pressure: 86Kpa to 106Kpa

　　Signal output function: pulse signal, 4-20mA signal

　　3、 Installation and maintenance:

　　1. Installation adopts flange connection, threaded connection and clamping type;

　　2. The direction of liquid flow during installation should be consistent with the direction indicated by the arrow on the sensor housing, and the upstream straight pipe section should be ≥ 6DS, and the downstream straight pipe section should be ≥ 5DS (DS is the measured inner diameter of the tested pipeline);

　　3. Sensors should be kept away from external magnetic fields. If unavoidable, necessary measures should be taken;

　　4. In order to avoid affecting the normal transportation of liquids during maintenance, bypass pipelines should be installed outside the straight pipe sections at both ends of the sensor;

　　5. When installing sensors outdoors, please ensure that the amplifier plug is waterproofed;

　　6. The wiring between sensors and display instruments should be selected based on the power supply of the amplifier.

AfterSalesService :

• Flange type LWGY turbine flowmeter