How to select a Pressure Switch?

In the market today, there are different types of Pressure Switches available. They are one of the most commonly used fluid control components. We use them at home, in our refrigerators, dishwashers and washing machines. Handling of a gas or liquid requires the pressure to be controlled. In the simplest form, a pressure switch is a device capable of detecting a pressure change. This can be done by opening or closing an electrical contact.

For industries, it is of utmost importance to choose Pressure Switches that are rugged, dependable, and accurate and have a high lifecycle.

In most type of equipment, a pressure switch is like a safety device. Thus, it is very important to give complete consideration when selecting the appropriate pressure switch.

Typically speaking, there are three instances when an engineer thinks he needs a pressure switch the most that are during:

• When a hydraulic or pneumatic system fails
• When equipment or a system containing a pressure switch is purchased
• When designing an in-house system

To determine which kind of Pressure Switch is appropriate, the following process must be used:

• Identify the type of switch being used as per operating specifications. This information is usually printed on the switch label.
• Determine the failure mode. For example, if a switch cannot actuate at the desired pressure, the problem could be cycle fatigue. Understanding system dynamics can help in diagnosis of the problem.
• Based on failure mode, consider replacing the switch with the one that meets your operating needs. The goal of a pressure switch is to eliminate failure mode.

Before choosing a particular Switch for a particular application, it is important to understand the types of switches available in the market and their strengths and weaknesses. This allows you to optimize accuracy, life, ease of use, and other important features as they relate to your specific needs.

For more information on pressure switches, visit http://www.arvihitech.com. Arvi Hitech are the Distributors, Suppliers & Dealers of Honeywell Pressure Switches in India. We are distributing Single Pole Single Throw circuitry and Single Pole Double Throw circuitry Honeywell Pressure Switches in compact size & compatibility with variety of media.