Valve Position Sensing Using Reed Sensors

In industries such as water purification, gas, and chemicals, precise control over the cleaning and filtering processes is critical. These processes involve the use of multiple valves, filtration vessels, and solenoids. A console panel monitors the volume of fluid being treated and displays other essential information, such as valve position. Dual port valves, which can be opened from 0-100%, must be accurately tracked by the system to ensure the correct ratio of inlet fluid and mixture. This is particularly important for injecting chemicals or topping up the system with fresh water. Traditional methods of tracking valve positions can be cumbersome and prone to inaccuracies, leading to potential errors in the treatment process.

The integration of reed sensors into these systems significantly enhances their accuracy and reliability. Reed sensors, known for their sensitivity to magnetic fields, provide a precise method for tracking the number of turns made by the valve wheel. By counting these turns, the system can determine the exact position of the valve, ensuring that the same settings can be replicated consistently. This real-time monitoring is crucial for maintaining the correct fluid ratios and ensuring the efficiency and safety of the industrial processes.

A multipole magnet is attached to the wheel of the dual port valve. As the valve wheel is turned, the magnet actuates the reed sensor which is mounted on a printed circuit board (PCB) and encapsulated within the valve body. The reed sensor counts the number of turns made by the valve wheel, and this data is then translated into a percentage of the valve’s opening. This information is continuously updated and displayed on the console panel, allowing operators to monitor and adjust the valve positions with high precision.

The use of reed sensors in valve position sensing applications offers a robust solution for industries that require precise control over fluid ratios. By providing accurate, real-time data on valve positions, these sensors help maintain the efficiency and reliability of water purification, gas, and chemical processes. The integration of reed sensor technology ensures that the correct settings can be consistently applied, reducing the risk of errors and enhancing the overall performance of industrial systems.

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Pulse Counting Type

When an application requires the volume of a fluid, or a distance, or the RPM of a machine tool measured, such an application can be Continue reading -> Sep 29, 2024

Recommended Products

The Reed Switches and Sensors used in such chill water flow sensing applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

R4 Ultra Miniature SMD Reed Sensor

R4-S SMD Reed SensorR4-S Reed Sensor PCB Layout drawingR4-F SMD Reed SensorR4-F Reed Sensor PCB Layout drawingR4 Reed Sensor Packing Continue reading -> Sep 29, 2024

Micro Miniature Reed Sensor, R3

R3S Miniature Reed Sensor drawingR3S Reed Sensor PCB Layout drawingR3F Miniature Reed Sensor drawingR3F Reed Sensor PCB Layout drawingR3 Continue reading -> Sep 29, 2024

Ultra Miniature PCB Mountable Reed Sensor, MS-104

Drawing of MS-104Drawing of MS-104 Pad Layout starFeatures5W Contact Rating. 10.1 mm PCB Pitch. Normally Open contact. Two Continue reading -> Sep 29, 2024

Micro Miniature PCB Mountable Reed Sensor, MS-105

Drawing of MS-105 Reed SensorDrawing of MS-105 PCB Pad Layout starFeatures10W Contact Rating. 12.7 mm PCB Pitch. Normally Open Continue reading -> Sep 29, 2024