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A pressure switch is a control device that senses changes in pressure and mechanically opens and closes an electrical circuit at a pre-determined point. Unlike other pressure instruments like pressure gauges and pressure sensors that measure and monitor pressure, switches are a bit more complicated. Ashcroft is an industry leader in pressure measurement instrumentation and created this article to provide a basic foundation of information about switches for the industry novice. Read on to learn about the different types of pressure switches, common applications, how they operate, key terms, switch accuracy, activation methods and more. When you’re done reading, you will also find additional resources about switches that may interest you.

If you work in an industry that relies on pressure switches or temperature switches you know that these small devices play a big role in making sure your applications run smoothly and efficiently. But at what price? The short answer is between $50 - $1500. Not helpful, I know. But, if you Google how much these instruments cost, you will be hard-pressed to find an accurate answer. The reason is simple. There are so many factors that go into the price of a switch, it’s nearly impossible to provide any kind of estimate without knowing your specific requirements. As a product manager for industrial switches at Ashcroft – a recognized global leader in temperature and pressure instrumentation - I can help you get closer to a more precise answer. However, keep in mind, this topic covers a lot of ground. So, for the purposes of this article, we will focus on pressure and temperature switches used in industrial applications. When you’re done reading, you will be able to validate the price range you are currently paying. You will also know what to expect if you are searching for a new supplier. Finally, you will be more prepared to make a pressure switch or temperature switch purchasing decision, whether you work with Ashcroft or not.

A pressure switch can help ensure safe, reliable measurements for an application, but only if you fully understand the physics of its mechanics and the various nuances such as the setpoint, reset point and deadband. But what does deadband mean and how does it apply to a pressure switch? This article will explain the meaning of deadband and how it works so you can help ensure continued accuracy for your application.

Your pressure switch can be impacted by many factors when used in an application. Pressure and temperature ranges can interfere with your measurements if you are using the wrong pressure instrument for the job. An appropriate microswitch for your pressure switch can mean the difference between a reliable, repeatable reading or not. How can you ensure you are choosing the right microswitch for your application?

When your application involves hazardous locations, it’s important to use instruments that are up to the challenges these applications can offer. In environments with a fire or explosion risk, the wrong pressure instruments can lead to operator injury, equipment damage or worse. How can you avoid these problems?

With more automated and integrated systems running businesses around the globe, there is a growing need to protect system operators. Putting additional safety measures in place can help prevent worker injury or damage to your equipment.