A flow switch is used to determine if the flow rate is above or below a certain threshold. This value, the set point, can be fixed or adjustable. When the set point is reached, the response can be the actuation of an electric circuit. When the flow switch is actuated, it will stay in that condition until the flow rate moves back from the set point by some amount.
We offer adjustable and fixed set point flow switch solutions in piston style working principle, available in a variety of flow ranges, sizes, and materials. The salient feature of a flow switch made by Malema is that it comes with a custom calibration option to precisely suit your application.
The inline and by-pass style configurations, standard and custom fittings options offered make Malema Flow Switches a versatile flow measurement solution for various applications for gases and liquids. In addition, they are also available in explosion-proof designs to install in hazardous locations.
How do flow switches work?
A flow switch is a device used to detect whether a fluid (liquid or gas) is flowing through a pipe, duct, or channel, and to trigger an electrical signal when flow exceeds or drops below a set level.
Flow switches detect the presence or absence of flow and trigger an action, such as turning a pump on/off or sounding an alarm. Flow switches typically use a magnetic piston, shuttle or vane that reacts when flow exceeds or drops below a set threshold.
What are the different types of Flow Switches?
Flow switches are available in the following types:
- Adjustable set point flow switches allow operators to set a specific flow rate at which the switch activates, providing flexibility for changing process conditions.
- Fixed set point flow switches activate at a predetermined flow rate that cannot be adjusted, offering a simple, reliable solution for consistent applications.
- Explosion-proof flow switches are designed for hazardous environments where flammable gases or liquids are present. These switches prevent sparks and ensure safe operation.
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