Measuring Water Flow Using a Reed Sensor

Introduction

There are a multitude of applications that require the measurement of the volume of water.  Water filters must measure the amount of water passing through them in order to know when to change the filter.  In many cases these newer filters may be directly connected to the tap water in the home.  Also many of these newer refrigerators, also used in the home, are directly connected to a filtered water line.  Designers have chosen Standex-Meder’s reed sensors as an inexpensive way to accurately measure the volume of water passing through these filters.

Full Application Write Up
Measuring Water Flow Volume to Detect Filter Replacement - Flow Level Sensor

Features

 

  • Magnet and reed sensor are isolated and have no physical contact by typically having the magnet mounted to a mini paddle wheel, and the reed sensor is mounted strategically such that the magnetic field of the permanent magnet will be sensed with each rotation of the paddle wheel.
  • The reed switch used in the reed sensor is hermetically sealed and is therefore not sensitive to wet, watery environment
  • The permanent magnet is not affected by its environment
  • Tens of millions of reliable operations
  • Surface mounting and through hole mounting
  • Cylindrical hole and screw fastening mounting
  • Contacts dynamically tested

 

SeriesDimensionsmminchesIllustration
MK15W2.50.098 MK15 Reed Sensor
H2.50.098
L19.500.768
MK16W2.30.091 MK16 Reed Sensor
H2.30.091
L15.600.614
MK17W2.10.083MK17 Reed Sensor
H2.10.083
L9.610.378
MK22W2.70.106 MK22 Reed Sensor
H2.30.091
L15.600.614
MK23-35W2.20.087 MK23-35 Reed Sensor
H1.950.077
L15.750.620
MK23-66W2.20.087 MK23-66 Reed Sensor
H2.70.106
L19.600.772
MK23-87W2.00.079 MK23-87 Reed Sensor
H2.10.083
L15.600.614
MK23-80W2.00.079 MK23-80 Reed Sensor
H2.10.083
L13.00.512
MK24W2.20.086 MK24 Reed Sensor
H1.80.070
L5.50.216
SeriesDimensionsmminchesIllustration
MK04W13.90.547
MK04 Reed Sensor Dimensions

M04 magnet sold separate

H5.90.232
L23.00.906
MK05W19.60.772
MK05 Reed Sensor

M05 magnet sold
separate

H6.10.240
L23.20.913

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