Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Level Sensing in Washing Machines and Dish Washers

Reed switches in Washing Machine level sensing
Washing Machine Water Level

Washing machines and Dish Washers have smaller reservoirs to hold various fluids that help the user in continuous easy running of these appliances. Washing machines need such reservoirs for holding liquid detergents used in the washing of the clothes, or fabric softener for the protection of the clothes. Dish washers user reservoirs for holding water softeners to reduce the hardness of the incoming water supply to help reduce stains on the dinnerware.

A window is usually given behind the door of these appliances, to check the level manually. With time, this window gets stained, and it is difficult to view the exact level. This is where a small foamed magnet on a spindle can be fixed to the reservoir cap, with a reed sensor mounted on the circuitry. This combination detects low levels in these tanks and the level readings are very repeatable.

When the reservoir reaches a near empty level, the reed sensor signals the processor which lights up an LED on the panel. Special reed sensors can be used to switch line voltages directly without the need for any step down.

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.

Position sensing Type
Position sensing Position Sensing type application When an application requires the end position of a movement sensed, or the sensing of a part when it Continue reading ->

Nov 7, 2020

The Reed Switches and Sensors used in such 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.

FS-V Float Switch for Vertical Mounting
Vertical Float Switch Drawing of FS-V Float Switch starFeaturesNormally Open and Normally Closed contact Available. Sputtered Ruthenium Contact. Higher Continue reading ->

Oct 30, 2020

R3 Miniature SMD Reed Sensor
Miniature Reed Sensor These miniature SMD reed sensors are designed for low power, high speed switching applications, and have a cost advantage over the Continue reading ->

Jun 7, 2021

R2 Standard size SMD Reed Sensor
Standard Size Reed Sensor R2-S Gull-wing SMD Formed Reed SensorR2-S Gull-wing SMD Formed Reed Sensor Pad LayoutR2-F Low Profile SMD Formed Reed SensorR2-F Low Continue reading ->

Dec 2, 2020

IL-2022 Reed Switch for Inductive Loads
Reed Switch for Inductive Load This Inductive Load switching IL-2022 Reed Switch is designed for performance at moderate inductive loads of 15W. The flattened leads are Continue reading ->

Dec 3, 2020

HW-5052 Reed Switch for High Wattages
Reed Switch for High Wattage switching This HW-5052 High Wattage Reed Switch is physically robust and can switch up to 120W. The two types of contact ratings available cover a Continue reading ->

Dec 3, 2020