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3" Water Flow Sensor G3 Threaded Turbine Flowmeter, 20-500 L/min Pulse Output Liquid Flow Sensor

3" Water Flow Sensor G3 Threaded Turbine Flowmeter, 20-500 L/min Pulse Output Liquid Flow Sensor

CUCIR-DJWF-DN80

Connection Size
$109.00
$109.00
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● 20~500 L/min
● 3 Inch (DN80)
● Pulse output
● Water (free of impurities)
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Overview

The CUCIR Industrial 3-Inch Turbine Water Flow Sensor is a high-capacity solution engineered for precision monitoring in large-bore liquid systems. With a dynamic flow range of 20–500 L/min, it is designed for seamless integration into municipal water networks, industrial circulation systems, and automated fluid control equipment. Featuring a standardized DN80 (3") interface, the sensor utilizes a low-resistance internal flow path and a high-response turbine mechanism. As fluid passes, the internal rotor generates stable pulse signals proportional to the velocity, ensuring accurate real-time tracking of both instantaneous and cumulative flow rates.

Feature

High-Volume Measurement Range: Capable of handling broad flow spectrums from 20 to 500 L/min, making it highly versatile for high-diameter supply lines and heavy-duty cooling systems.

CUCIR DN80 Standard Interface: The 3-inch port features an optimized internal diameter to minimize flow resistance. The precision-balanced turbine ensures high linearity and exceptional accuracy during horizontal installation.

Precision Pulse Signal Output: Delivers a 50% duty cycle pulse frequency directly proportional to the flow rate, simplifying data acquisition and flow conversion for PLC and control systems.

Universal Voltage Compatibility: Supports a wide operating voltage of DC 3.5–24V, offering flexible power options that lower integration complexity and overall system maintenance costs.

Industrial-Grade Pressure Resistance: Rated for operating pressures up to 1.75 MPa, each unit undergoes CUCIR’s rigorous high-pressure sealing tests to guarantee leak-proof performance and long-term operational safety.

Electroplated Aluminum Construction: The robust electroplated aluminum valve body provides superior durability and high insulation resistance, ensuring stable performance in clean water environments.

TECHNICAL SPECIFICATIONS

Flow Range
20–500 L/min ±3%
Interface Size
3 inches (DN80)
Accuracy
5%
Voltage Range
3.5 – 24 VDC
Output Pulse High Level
> DC 4.7 V (at DC 5V input)
Output Pulse Low Level
< DC 0.5 V (at DC 5V input)
Output Pulse Duty Cycle
50% ±10%
Load Capacity
≤ 10 mA (at DC 5V)
Water Pressure Resistance
≤ 1.75 MPa
Inner Diameter
77mm
Outer Diameter
87mm
Thread Length
21mm
Suitable Medium
Water (free of impurities)
Valve Body Material
Electroplated Aluminum
Medium Temperature
-20 to 100 °C
Insulation Resistance
> 100 MΩ
Installation Method
Horizontal Installation
Sealing Performance
All ports sealed, tested under 1.7 MPa water pressure for 1 minute with no leakage or deformation.
Flow-to-Pulse Relationship
F (Hz) = 0.5 * Q (L/min) ± 3%;(Example)30 pulses per liter;Pulse Range： ~10 to 250 Hz over 20–500 L/min flow range)
Precautions
1. Avoid severe impact and exposure to corrosive chemicals;2. Do not throw or subject the unit to physical collision.;3. The unit can be installed either horizontally or vertically;4. The medium temperature should not exceed 80°C.

Dimension (unit: mm)

Dimension Drawing

Detail

Dimension Drawing

Product FAQ

How does a turbine water flow sensor work? +
The sensor utilizes the kinetic energy of the flowing fluid to drive an internal high-precision turbine. As the turbine rotates, a built-in Hall-effect sensor detects the magnetic poles integrated into the blades and converts the rotational speed into a stable square-wave pulse signal. Since the pulse frequency is directly proportional to the flow velocity, the system can achieve precise real-time monitoring of both instantaneous and total flow rates.
What are the water quality requirements for a turbine water flow sensor? +
These sensors are specifically designed for clean water and non-corrosive liquids free of solid impurities. To maintain long-term accuracy and prevent mechanical wear, the medium should be free of fibers, abrasive particles, or significant air bubbles. For applications where debris may be present, we recommend installing a 50-mesh or finer strainer upstream to protect the internal turbine assembly.
What should be considered when installing a turbine water flow sensor? +
To ensure optimal laminar flow and measurement accuracy, the sensor should ideally be installed horizontally. It is critical to maintain a straight pipe section—typically 10D (10x diameter) upstream and 5D downstream—to eliminate turbulence. Additionally, the unit should be kept away from strong electromagnetic interference (such as large motors or inverters) and severe vibrations to prevent signal distortion or premature bearing wear.