A flow switch is an important device that monitors the pressure of fluids and flow rate. Do you want a new or used switch? They will all trigger necessary actions within the flow system to match the set rate. You can rest assured a flow switch will provide you accurate flow rate results significant in air, gases, or liquids.

How a flow switch work

Whether you get a new or a used switch, it's essential to know how they function. A flow switch has different components that work together to produce the desired results. Many switches have a primary device. The device is linked to a circuit and then fitted in the path through which gas or fluid flows. When the fluid you want to monitor flows, it makes the paddle to rotate. That will send a signal back to the transducer for reading. 

The transducer receives a raw signal, which comes from a rotating paddle. Signals received are passed to the transmitter through a readable format. Since you had a fixed fluid flow rate, the transmitter reads that data based on your pre-set parameters. The signals result in various actions needed to adjust behavior in the flow system. That way, a new or used switch monitors, reports, and controls the fluid flow rate.

You may get a used switch at a friendly price and can be useful in monitoring the flow rate. The flow switch works to make sure the fluid flow rate remains within your pre-set limits. When the flow rate goes below the set limits or exceeds the highest required, the switch initiates a series of actions. Some parts of the flow system may be shut off, or the flow may be diverted. The used switch may also power on a pump or activate an alarm if the fluid flow rate goes below or exceeds the set limits. Don't forget that any action your new or used switch performs is based on the type of switch and is made of for.

While some flow switches have a paddle, others do not. You will find an ultrasonic version of a flow switch that works by bouncing a signal back from the fluid you are monitoring. Ultrasonic will be the new or used switch you can use when dealing with contaminated fluid.

The Rota flow meter works differently. It uses a tapered tube with a float to help measure, limit, or allow passage of fluid or gas. That way, they give you the rate of flow.

How switches are used

Flow switch for pumps

Pump flow switches are used to prevent your pump from running dry in case the water supply fails. A water pump can overheat with ease or get damaged when no flow or there is a low fluid flow rate. So, the used switch helps to shut down the power pump when the supply is limited. Here are flow switches for pumps. 

Sump pump switch

Flow switch for pool pump

Heat pump switch

Flow switch for a shower pump

Conclusion

Many flow switches are sold in the market. It's essential to inquire from your supplier before buying. That will guide you on the best switch to buy. You may even go for a switch used. It can offer accurate results, just like a flow switch. But you need to do a thorough check to find the one that functions well. It can offer accurate results, just like a flow switch. But you need to do a thorough check to find the one that functions well.