Overview:
Model LWGY turbine flow meter adapts to measure the liquid rate and total flowrate of low viscosity. It can be widely used in the fields of Petrol, Chemical industry, Metallurgy, Scientific research for measuring or control. Several output and display methods can be selected.
Operating Principle:
A permanent magnet, an induction coil and an amplifying unit are placed in the preamplifier. When the measured fluid is flowing across the flow meter, it drives the turbine to rotate, and the turbine periodically changes reluctance value of the magnetic circuit, which makes the magnetic flux passing the coil vary periodically, thus to induce in the coil the pulsating current signal, which is delivered to a secondary instrument after amplification and treatment, or provide in-situ display, so as to achieve flow rate accumulation.
Within the measuring range, the impeller rotate is positively proportional to the flow rate, namely the impulse total is in direct ratio to the quantity flow.Ratio of the two is termed as K-factoryt, which is indicated by letter "K" (P/L).The instrument constant value of each flow meter is educed by means of actual flow calibration.Divide impulse frequency f and impulse total N measured by the flow meter by instrument constant K of it respectively, the flow rate rate q (L/s) and the quantity Q (L) will be calculated.i.e.
q = ƒ/K (L /s ).
Q = N/K (L)
Medium:
Normal TEMP.:Water, Weak corrosive organic solvent, liquid medicine, gasoline, diesel and other clean media
Low TEMP.:liquid nitrogen,liquid oxygen and so on
Hight TEMP: hot water,hot oil and so on
Product Parameters
| Measure medium: | Water, alcohol, liquid medicine, gasoline, diesel and other clean media |
| Nominal diameter: | DN4 -- DN300mm |
| Measurement accuracy: | 0.2, 0.5, 1.0 |
| Medium viscosity: | less than 5 × 10-6m2 / s (for the liquid with >5 × 10-6m2 / s , the flowmeter needs to be calibrated before using) |
| Nominal pressure: | 1.6Mpa; 2.5Mpa; 4.0Mpa; 6.3Mpa......42Mpa(CLASS 150......CLASS 6000) |
| Medium temperature: | -20 ºC ~ +120 ºC (Normal TEMP),-200ºC(Low TEMP),+160 ºC(High TEMP) |
| Environmental conditions: | Ambient temperature: -20 ºC ~ +60 ºC; Relative humidity: 5% to 95%; Atmospheric pressure: 86kPa ~ 106kPa; |
| Power supply: | 12-24VDC,3.6VDC |
| Output signal: | 4-20mA,PULSE,RS485(MODBUS),HART,ALARM SIGNLE |
| Ingress protection : | IP65, IP66, IP68 |
For technical performances of the turbine flow meter , namely Nominal Diameter, Nominal Pressure, Max. Pressure Loss, measuring Range etc., please see Table for details. Unit: m3 /h
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