SKU: SENS-0655
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SEA YF-DN40 Plastic Hall Effect Turbine Flow Sensor G1½" 5-150L/min

₹1,959.00 (Inclusive of all taxes)
Out of Stock

The SEA YF-DN40 is a G1½” (DN40) plastic-body turbine flow sensor with a Hall effect output, designed for inline water flow measurement from 5 to 150 L/min. It operates on a 5-24V DC supply and provides a pulse output proportional to flow rate, making it compatible with PLCs, Arduino, and industrial flow meters.

Features

  • Hall effect sensor outputs pulse signal proportional to flow rate (F ≈ 0.45 * Q pulses per second).
  • Wide flow measurement range from 5 to 150 liters per minute (L/min).
  • Rugged plastic housing rated for hydrostatic pressures up to 1.75 MPa.
  • Broad 5-24V DC operating voltage range for flexible system integration.
  • High insulation resistance (>100 MΩ) for reliable operation in wet environments.

Out of stock

Description

The YF-DN40 flow sensor employs a mechanical turbine rotor paired with a non-contact Hall effect sensor. As fluid passes through the sensor body, it spins the rotor; the embedded magnet in the rotor triggers the Hall sensor with each revolution, generating a digital pulse train. This pulse frequency is directly proportional to the volumetric flow rate, enabling precise flow measurement and totalization in liquid handling systems.

Constructed from durable plastic, the sensor is designed for continuous duty in water applications, withstanding pressures up to 1.75 MPa. Its wide operating voltage and pulse output interface allow for straightforward connection to microcontrollers, frequency counters, or dedicated flow totalizer modules, providing a cost-effective solution for irrigation, industrial process control, and liquid dispensing.

Key Features

  • High-accuracy turbine-based flow measurement with ±2% accuracy from 1 to 120 L/min.
  • Hall effect sensing ensures non-contact, wear-free pulse generation for long-term reliability.
  • Robust plastic construction resistant to corrosion and rated for high-pressure liquid lines.
  • Pre-calibrated output with a known K-factor (approximately 0.45 pulses per L/min) for easy flow calculation.
  • Extended environmental testing validated for stable operation from -20°C to +85°C.
  • Integrated 50 cm cable with standard wire leads for direct connection to control systems.
  • G1½" (DN40) threaded ports for easy installation into standard plumbing and piping.

Applications

  • Industrial water flow monitoring and totalization in process control systems.
  • Irrigation system flow measurement and automated watering control.
  • Liquid dispensing and batching machines for precise volume control.
  • Coolant flow monitoring in CNC machinery and cooling systems.
  • Residential and commercial water meter add-ons for flow analysis.

Technical Specifications

Manufacturer Part NumberYF-DN40
Flow Measurement Range5 - 150 L/min
Operating Voltage5 - 24 V DC
Output SignalHall Effect Pulse
Pulse Characteristics (K-factor)F ≈ 0.45 * Q (Q in L/min)
Accuracy (1-120 L/min)±2%
Maximum Hydrostatic Pressure≤ 1.75 MPa
Port Size / ThreadG1½" (DN40)
Housing MaterialPlastic
Insulation Resistance> 100 MΩ
Cable Length50 cm
Operating Temperature Range-20°C to +85°C
Dimensions (L x W)90 mm x 47 mm
Weight150 g

Frequently Asked Questions

What is the output signal of the YF-DN40 flow sensor and how do I calculate flow rate from it?

The sensor outputs a digital pulse signal via its Hall effect sensor. The pulse frequency is proportional to flow rate with a K-factor of approximately 0.45 pulses per liter per minute (F ≈ 0.45 * Q). To calculate flow rate (Q in L/min), count the pulses over a known time period and divide by the K-factor and time. Most PLCs, Arduino, or flow totalizers can read this frequency directly.

What is the maximum pressure and fluid type this sensor can handle?

The YF-DN40 is rated for a maximum hydrostatic pressure of 1.75 MPa (approximately 254 psi). It is designed primarily for water and other non-aggressive, clean liquids. The plastic housing is corrosion-resistant but may not be suitable for solvents, fuels, or highly viscous fluids without verifying material compatibility.

How do I wire and power the YF-DN40 flow sensor?

The sensor has a 3-wire cable typically comprising Red (VCC, 5-24V DC), Black (GND), and Yellow or Green (Pulse Output). Connect VCC and GND to your power supply within the 5-24V DC range. The pulse output wire connects to a digital input, interrupt pin, or frequency counter on your controller. A pull-up resistor may be required on the signal line depending on your microcontroller.

Is this sensor suitable for outdoor or harsh environment use?

While the sensor has a robust plastic housing and a wide operating temperature range (-20°C to +85°C), it does not have a specified IP (Ingress Protection) rating for waterproofing. For outdoor or wet location use, it is recommended to install it in a protected enclosure or conduit and properly seal the cable entry point to prevent water ingress into the electronics.

Package Includes

  • 1 x SEA YF-DN40 Water Flow Sensor

Additional Information

Weight 0.15 kg
Dimensions 9 × 4.7 cm