How does an electronic pressure switch work?

Have you ever wondered how an electronic pressure switch works? In this article, PIF has enlisted the expertise of control instrumentation experts, Barksdale, to give a tutorial.

Pressure switches are one of the most commonly used fluid control components. We use them at home, in our refrigerators, dishwashers and washing machines. Whenever we handle a gas or liquid we almost always need to control the pressure.

How does an electronic pressure switch work
Our home appliances do not demand high accuracy, nor do they experience high cycle rates. By contrast, the pressure switches used in industrial machinery and systems must be rugged, dependable, accurate and have a high lifecycle.

Most of the time we never think about pressure switches. They just show up with such machinery as machines or machine tools. In this type of equipment, we depend upon pressure switches to act as safety devices, alarms, or as the control element within the system. But in most cases we give little consideration to this component when we make a purchase.

How do electronic pressure switches work?

Electronic pressure switches provide electronic switch output signals. They often also produce an additional analogue output signal proportional to the pressure. Electronic pressure switches are factory set to optimal switch points or are programmable on-site thanks to integrated displays and buttons. Their integrated programmable logic allows for the switch points and output signal to be tailored to the application.

Among the many programmable functions of modern electronic pressure switches are hysteresis, delay time, normally closed or normally open and window function. They also provide constant pressure readings and indicate whether the switch outputs are active or not. IO-Link technology can also be used for remote programming via the signal cable.

When to use an electronic pressure switch

Electronic pressure switches are suitable for applications that demand stability, multiple switch points and flexibility of control – such as for control and automated equipment. They are the desired choice for installations requiring flexible programming and adjustment, local indication display and extra analogue output signals.

BPS3000 Electronic Dual Pressure Switch

A quarter of a century after pioneering the solid-state pressure switch, we recently introduced the next game-changer: the BPS3000 Electronic Dual Pressure Switch. This digital pressure switch represents the next step in the pressure switch evolution and features some truly impressive attributes.

Features and benefits

  • Measuring range: gauge: 0 – 9000 psig, absolute: 0 – 150 psia.
  • Enclosure Rating: Type 4X (IP65) / Type 6 (IP67).
  • Measuring ranges: 0…0.2 bar to 0…600 bar gauge (switchable to psi + Mpa).
  • Suitable for indoor or outdoor usage.
  • Max. 2 switch points.
  • Analogue output 4 – 20 mA or 0 – 10 V.
  • Rotatable 320° display & electrical connection.
  • Menu navigation refers to VDMA standard.

For more information about Barksdale’s full range of switch products please contact 01256 799721 or visit www.barksdale.co.uk.

Barksdale Control Products

Barksdale is an ISO 9001 registered manufacturer of controls for industrial applications, specialising in the control and measurement of fluids. Founded in 1949, Barksdale is headquartered in Los Angeles, with a UK office in Hampshire and a manufacturing facility in Germany.

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