Liquid turbine flow meter
- Commodity name： Liquid turbine flow meter
- Product Description
-
Introduction
The turbine flow meter is based on the principle of torque balance and belongs to velocity-type flow instruments. This flow meter has advantages such as simple structure, lightweight, high accuracy, good reproducibility, sensitive response, and convenient installation and maintenance. It is widely used in industries such as petroleum, chemical, metallurgy, water supply, and papermaking, making it an ideal instrument for flow measurement and energy saving.
Working Principle
When the fluid flows through the sensor housing, the angle between the blades of the impeller and the flow direction causes the fluid's impact to generate a torque that overcomes frictional torque and fluid resistance. The blades rotate until torque balance is achieved, stabilizing the rotational speed. Under certain conditions, the rotational speed is proportional to the flow rate. Since the blades are magnetically conductive, they are in the magnetic field of a signal detector (composed of permanent magnets and coils). The rotating blades cut through magnetic lines of force, periodically changing the magnetic flux in the coil, which induces electrical pulse signals 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 that can be transmitted to a display instrument to show the instantaneous flow or total amount of fluid. Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid passing through the sensor.
In the equation:
f —— Pulse frequency [Hz]
k —— Instrument coefficient of the sensor [1/m3], provided by the calibration unit.
Q —— Instantaneous flow of fluid (under working conditions) [m3/h]
3600 —— Conversion factorTechnical Parameters
1. Medium temperature: -20℃ to +120℃ (stainless steel); -20℃ to +60℃ (UPVC); 0℃ to +120℃ (PP).
2. Ambient temperature: -20℃ to +50℃.
3. Power supply: +5V to +24V.
4. Explosion-proof mark: ExdⅡBT6.
5. Transmission distance: The distance from sensor to display instrument can reach up to 1000m.
6. Selection parameter table:LWGY□ □□□ □ □ □ Description Type
型LWGY Basic type, +12V power supply, pulse output, high level ≥8V
Low level ≤0.8VLWGYA 4-20mA two-wire current output, remote transmission type LWGYB Battery-powered on-site display type LWGYC On-site display/4-20mA two-wire current output 公
称
通
径4 4mm, ordinary turbine flow range 0.04-0.25m3/h
Wide range turbine is 0.04-0.4m3/h6 6mm, ordinary turbine flow range 0.1-0.6m3/h
Wide range turbine is 0.06-0.6m3/h10 10mm, ordinary turbine flow range 0.2-1.2m3/h
Wide range turbine is 0.15-1.5m3/h15 15mm, ordinary turbine flow range 0.6-6m3/h
Wide range turbine is 0.4-8m3/h25 25mm, ordinary turbine flow range 1-10m3/h
Wide range turbine is 0.5-10m3/h40 40mm, ordinary turbine flow range 2-20m3/h
Wide range turbine is 1-20m3/h50 50mm, ordinary turbine flow range 4-40m3/h
Wide range turbine is 2-40m3/h80 80mm, ordinary turbine flow range 10-100m3/h
Wide range turbine is 5-100m3/h100 100mm, ordinary turbine flow range 20-200m3/h
Wide range turbine is 10-200m3/h150 150mm, ordinary turbine flow range 30-300m3/h
Wide range turbine is 15-300m3/h200 200mm, ordinary turbine flow range 80-800m3/h
(Wide range turbine is)40-800m3/h.Anti
ExplosionNo mark, non-explosion-proof type B Explosion-proof type Accuracy
LevelA Accuracy level of grade A B Accuracy level of grade B C Accuracy level 0.2 Turbine
TypeA Wide range turbine B Standard turbine
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NanPi County, Cangzhou City, Hebei Province
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