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High Accuracy  

Good Repeatability

No Zero Drift

Wide Range

Light Structure

Suitable for High Pressure Measurement

LWY Turbine Flowmeter
LWGY Turbine Flow Sensor

OVERVIEW


LWY turbine flowmeter/LWGY turbine flow sensor is connected to the converter through the flow sensor to realize pulse output, current output, on-site display and other functions. The flameproof type can be directly installed in flammable and explosive places, including explosive gas hazardous environments in Zone 1 and Zone 2. The flowmeter has the characteristics of high accuracy, wide measurement range, long life, simple operation and maintenance, and can be widely used in food, medicine, petrochemical, metallurgy, papermaking and other industries. It is an ideal instrument for flow measurement.


LWY turbine flowmeter/LWGY turbine flow sensor is suitable for liquids that are not corrosive to stainless steel 304, 2Cr13, corundum (Al2O3), hard alloy, etc., and have no impurities such as fibers and particles. The instrument coefficient given in the calibration certificate is applicable to the case where the medium viscosity is not greater than 5×10-6 m2/s. For liquids greater than 5×10-6 m2/s, the instrument should be calibrated with real liquid and used according to the new instrument coefficient.


If the user requires a special type of flow meter, it can be supplied upon agreement.
How It Works

When the measured liquid flows through the flowmeter sensor, the impeller inside it rotates with the help of the kinetic energy of the liquid. At this time, the impeller blades cause the magnetic resistance in the detection device to change periodically. Therefore, an electrical pulse signal proportional to the flow rate is induced at both ends of the detection coil, which is amplified by the preamplifier and sent to the display unit. The single-chip computer system in the display unit calculates according to the measured pulse number and the flowmeter instrument coefficient K, and displays the instantaneous flow rate and the accumulated total amount.



The relationship between the instrument coefficient and the instantaneous flow rate, frequency, pulse number, and cumulative total is:

K=f/Q and K=N/V

Where: f—flow signal frequency (Hz)

Q—instantaneous flow rate (m3

/s)

N—pulse number

V—volume total (m3)

K—instrument coefficient (1/m3)

Coverter
Impeller
Main Technical Parameters
1. Basic parameters and installation dimensions: see Table 1 to Table 4, Figure 1 to Figure 6.
2. Ambient temperature: -20℃～+60℃
3. Accuracy: 0.5%FS, 1.0%FS
4. Power supply: 3.6V, 12V, 24V

5. Output signal: pulse signal, 4~20mA current signal, Modbus communication, Hart communication

Explosion-proof grade: Flameproof Ex d IIC T6 Gb

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