Commonly Measured Media

Liquids such as water, oil, and alcohols that are fiber-free, particle-free, low in corrosiveness, and free of impurities

Product Overview

The DW-LWGY Turbine Flow Sensor, designed based on the principle of torque balance, is a typical velocity-type flow meter. The product has advantages such as simple structure, light weight, high measurement accuracy, good repeatability, sensitive response, convenient installation, and easy maintenance, and is widely used in multiple industrial fields such as petroleum, chemical, metallurgy, water supply, and papermaking.

Working Principle

When the liquid being measured flows through the sensor, under the action of the fluid, the impeller rotates under force, and its rotational speed is proportional to the average flow velocity in the pipeline. The rotation of the impeller periodically changes the magnetic resistance of the magnetic circuit, causing the magnetic flux in the detection coil to change periodically, generating an induced electromotive force with a frequency equal to the rotation frequency of the blades. After amplification, it is converted and processed.

Applicable Media and Working Conditions

Suitable for measuring liquid media within closed pipelines, which are non-corrosive to stainless steel cemented carbide and free of impurities such as fibers and particles. The sensor is compatible with media having a kinematic viscosity < 5×10⁻⁶ m²/s; if measuring liquids with a viscosity > 5×10⁻⁶ m²/s, it must be calibrated with the actual liquid before use.

Function and Expansion

When paired with a dedicated function display instrument, it can achieve automated control functions such as quantitative control and overrun alarm;

The explosion-proof product has a protection level of Exd IICT6Gb and can be safely applied in flammable and explosive hazardous working conditions.

Product Parameters

Nominal Diameter	DN15-DN300
Connection Method	Flange type; Clamp type; Internal thread type; External thread type
display	Non-display type; LCD display type
Measuring Medium	Liquid
Liquid flow range (m³/h)	1 ~ 1900m³/h
Range ratio	1:6；1:10；1:20
Body Material	SS304; SS316L (customization required)
Pressure Rating	1.6MPa (≥1.6MPa, customization required)
Accuracy	±1%R, ±0.5%R, ±0.2%R (customization required)
Supply Voltage	3.6V battery; DC24V
Output Signal	Pulse, 4~20mA, RS485, Hart Protocol
Explosion-proof Marking	ExdIICT6
Protection Class	IP65; IP68
Electrical Interface	M20X1.5；NPT1/2
Temperature of the measured medium (℃)	-20~+80℃;-20~+120℃；-20~+150℃；
Environmental Conditions	Temperature -10~+55℃, relative humidity 5%~90%, atmospheric pressure 86~106kPa