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    Water Heater Flow Sensor, 1~30 L/min

    SKU: SUCH-WFS-FS200A
    $61.47
    ● 1~30 L/min (±3%) ● G1/2'' interface ● Pulse output ● PPS material
    🚚 Free shipping
    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    High-voltage-resistant water heater flow sensors for sale. With a G1/2'' standard interface design, the flow range covers 1~30 L/min, achieving measurement accuracy up to ±3% for precise detection of water usage status. This water flow sensor features a high-stability pulse output design internally, where pulse frequency is proportional to flow rate at approximately 486 pulses per liter. It is widely compatible with instantaneous, electric storage, and gas water heater systems.

    Feature

    Water heater flow sensor feature

    • Wide Flow Range: The water heater flow sensor supports measurement across a broad range of 1–30 L/min with accuracy up to ±3%, precisely adapting to flow variations in both residential and commercial water heaters under diverse usage scenarios.
    • High-Sensitivity Pulse Output: Utilizing a pulse output method, the frequency exhibits a linear relationship with flow rate. The output characteristic is F = 8.1 × Q, approximately 486 pulses per liter, delivering stable and consistent signals.
    • Wide Voltage Supply: Supports DC 3.5–24 V input with a rated operating voltage of DC 5 V. Maximum operating current is only 15 mA, ensuring low power consumption and minimal heat generation.
    • High-Temperature Resistant Material: Designed for long-term operation in water heater environments, the sensor is constructed from high-performance PPS material, offering excellent heat resistance and mechanical strength.

    Dimension (unit: mm)

    Water heater flow sensor dimension

    Wiring Diagram

    Water heater flow sensor wiring diagram

    Specs
    Interface Dimensions G1/2''
    Flow Range 1~30 L/min (±3%)
    Inner Diameter / Outer Diameter 10 mm / 20.4 mm
    Thread Length 11 mm
    Pulse Characteristics (Hz) = [8.1 × Q] ± 3%, approx. 486 pulses/liter
    Operating Voltage DC 3.5–24 V
    Pressure Rating Range ≤ 1.75 MPa
    Rated Operating Voltage DC 5 V
    Maximum Operating Current 15 mA (DC 5 V)
    Operating Voltage Range DC 3.5–24 V
    Applicable Ambient Water Temperature 0–100 °C (non-condensing)
    Applicable Humidity Range 35%–90% RH (non-condensing)
    Allowable Water Pressure ≤ 1.75 MPa
    Material PPS
    Application

    Irrigation water flow sensor for gas water heater

    Gas Water Heater

    Wall-mounted dual-purpose boiler

    Wall-mounted Dual-purpose Boiler

    Water flow sensor for water heater

    Water Heater

    FAQ

    The water heater flow sensor primarily detects the presence of water flow and measures its real-time volume. When flow reaches the activation threshold, the system permits heating or ignition. Should flow cease or drop too low, the water heater automatically halts heating to prevent dry firing, thereby enhancing overall safety and operational reliability.

    Under normal conditions, no. The internal flow path of the water heater flow sensor is optimized to minimize pressure loss within the rated flow range, causing no significant reduction in water pressure. As long as the selected model matches the pipe diameter and flow range, the water delivery experience remains largely unaffected.

    When selecting a model, focus on interface dimensions, flow range, output signal type, and operating voltage to ensure compatibility with the water heater control system. Additionally, choose models with reliable temperature and pressure resistance to guarantee long-term stable operation.

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