#PRESSURE SWITCH OPEN WITH INDUCER ON SERIES#

Pressure switches serve an important safety function in heating systems such as furnaces. Pressure switches turn on or turn off the compressor at the set point. Pressure switches are extensively used in industrial process control systems. Common Applications for Pressure Switches When the spring tension reaches or exceeds the set point, it will move the contacts from open to closed in a NO switch or closed to open in an NC switch.įor ease of configuration across different applications, it is common for pressure switches to contain at least one pair of NO and one pair of NC contacts. The pressure on the diaphragm compresses a calibrated spring. How Does a Pressure Switch Work?Ī pressure switch is a passive device since the presence or absence of pressure is all that is necessary for it to function. It may be the set point for some applications and the cut-out point for others. The contacts in a NO switch stay open when the pressure is within an acceptable range and close when the pressure falls outside the acceptable range.įor NC switches, the pressure threshold that changes the state of the contacts depends on the application. The open/closed nomenclature refers to the electrical contacts in the switch. There are two types of pressure switches: normally open (NO) and normally closed (NC). Terminals to connect the external power source to the contacts.Electrical contacts that allow current from an external power source to pass through them when they touch.In some cases, it may be a knob instead of a lever, but the principle is the same. This lever is useful for deactivating the switch during installation or maintenance. An AUTO/OFF lever to activate the switch or to manually turn it off.Some switches have separate springs for controlling the set and cut out points. An adjustment spring to vary the set or cut out points.It is typically made of a pliable material that is sensitive to pressure. A diaphragm that acts as the pressure detection element.A pressure switch consists of the following key components: The pressure point that activates the switch is called its set point, and the pressure threshold that deactivates the switch is called the cut out point. What is a Pressure Switch?Ī pressure switch is a simple electromechanical device that is triggered by pressure to turn an electrical circuit on or off. Understanding how pressure switches work, the various types of pressure switches, and the common applications for them is useful when selecting a solution for a given application. They are also used in process control systems for maintaining steady pneumatic or mechanical pressure.

Pressure switches are important components for controlling the activation and deactivation of pumps in fluid systems when pressure thresholds are reached. Warning Regarding Life Support Applications.Appendix B – Accessories for use with Airtrol Products.Appendix A – Agency Listings and Approvals.Application Note #2 – Manifold Mount Switches.Application Note #1 – Pipe Thread Sealants.

#PRESSURE SWITCH OPEN WITH INDUCER ON SERIES#

VP-700 and 701 Series Vacuum Air Valve Switches.PP-700 and 701 Series Pressure Air Valve Switches.V-900-M Series Manifold Mount Vacuum Regulators.

RV-5200-M Series Manifold Mount Relief Valves.

R-900-M Series Manifold Mount Pressure Regulators.

Pressure switch open with inducer on