ATO Hall flow sensor is an ideal choice for large-diameter and high-flow scenarios: It is equipped with a hall element to achieve stable detection, uses a stainless steel valve body, and can withstand a water pressure of 1.75Mpa. Water flow sensor is compatible with a 1.5-inch interface, with an inner diameter of 36.5mm for the water inlet and 34mm for the water outlet, and supports a medium temperature range of -20~100℃; it is powered by a wide voltage of 3.5-24VDC, with a flow range of 5-150L/min, a pulse accuracy error of ≤5%, and the output level meets the high stability requirements of DC5V input scenarios, making it suitable for various equipment such as water treatment and water heaters.
Specification
| Model |
ATO-DN40S |
| Interface Size |
1.5 inches |
| Voltage Range |
3.5-24VDC |
| Water Pressure Resistance |
≤1.75Mpa |
| Inner Diameter |
Inlet: 36.5mm; Outlet: 34mm |
| Outer Diameter |
47.5mm |
| Thread Length |
19mm |
| Weight |
520g |
| Suitable Medium |
Water (no impurities) |
| Valve Body Material |
Stainless Steel |
| Medium Temperature |
-20~100℃ |
| Insulation Resistance |
>100MΩ |
| Flow Range |
5-150L/min |
| Pulse Range |
F=(0.45*Q), error ≤5%, i.e., 27 pulses per liter of water |
| Output Pulse High Level |
>DC4.7V (input voltage DC5V) |
| Output Pulse Low Level |
>DC0.5V (input voltage DC5V) |
Features
- Durable material and structure: Stainless steel valve body, resistant to 1.75Mpa water pressure, compatible with 1.5-inch interface, suitable for large-flow scenarios.
- Wide adaptability: Supports 3.5-24VDC wide voltage, -20~100℃ medium temperature, compatible with multiple equipment working conditions.
- Accurate and stable detection: Hall effect flow meter is equipped with Hall element, flow range 5-150L/min, pulse accuracy error ≤5% (27 pulses/liter of water).
- Reliable electrical performance: Insulation resistance>100MΩ, output level compatible with DC5V input scenarios, stable operation.
Dimension (unit: mm)

Application

Tips: What is Working Principle of Hall Effect Flow Sensor?
Hall effect flow sensor operates based on the hall effect and the principles of fluid mechanics. When fluid flows through the channel, it impacts the impeller and causes it to rotate, with the impeller's rotational speed being proportional to the flow rate. The rotating impeller periodically changes the magnetic flux between the permanent magnet and the Hall element. The Hall element converts the change in magnetic flux into pulse electrical signals. After being processed by the circuit, the instantaneous flow rate and cumulative flow rate can be calculated through the number of pulses. Hall water flow sensor adopts a non-contact measurement method, featuring no wear, a long service life, and the ability to achieve real-time and accurate monitoring. It also has the characteristics of fast response speed and compact structure, making installation and maintenance convenient. It can be adapted to flow detection of various media such as water, oil, and gas, and is widely used in various industrial and civil scenarios.