Welding Machines Use Magnet Sensors to detect Current Flow

Welding machines come in two main types: Constant Current and Constant Voltage. In Constant Current welding machines, the output voltage adjusts to maintain a consistent welding current.

Safety protocols dictate to keep the voltage low on welding machines until the electrode and workpiece make contact. Once welding begins, the built-in voltage regulator ramps up voltage to sustain the necessary current. However, after welding ceases and current demand drops, voltage must swiftly decrease.

Monitoring current flow during welding times and non-welding downtimes is crucial. Special Magnet Sensors strategically placed along high-current cables detect these fluctuations. When welding concludes and current diminishes, the Magnet Sensor sends a signal to the controller. In response, the controller promptly lowers the voltage to safe levels.

This process ensures both operational efficiency and safety when operating welding machines. By swiftly adjusting voltage levels, based on current demand, welding machines can effectively manage power usage while minimising risks associated with high voltage. Moreover, the integration of Magnet Sensors enhances automation, reducing the need for manual intervention and optimising workflow efficiency in automatic welding machine operations across the industry.

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.

Relay or Electromagnetic Coil Type

When it is necessary to control a circuit load by using a separate low-power signal, or where the states of several circuits must be Continue reading -> Sep 3, 2024

Recommended Products

The Reed Switches and Sensors used in such welding 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.

Miniature Flat Pack Reed Sensor MS-324

Drawing of MS-324 Magnet Sensor starFeatures10W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Sep 28, 2024

Standard Flat Pack Magnet Sensor, MS-328

starFeatures10W Contact Rating. Normally 30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Sep 28, 2024