Vacuum Switches

Vacuum switches are an essential component for many monitoring and control applications in hydraulic, pneumatic and processing industries. Performing in critical processes, these switches sense a change in the vacuum and open or close an electrical circuit when the chosen set point is reached. Vacuum switches are available that create signals for electro-mechanical, solid-state, or pneumatic switches upon reaching a specific vacuum level. The most important parameter to consider is the vacuum range that is needed for the switch to actuate, or the range over which linear output is needed.

Applications engineering supply a range of single pole single throw and double pole double throw vacuum switches that combine exceptional value for money with proven quality manufacturing. Our durable vacuum switches are suitable for a wide range of project specifications and engineering applications and have been rigorously safety tested.

At Applications Engineering, our customers know that they can rely on us to provide them with exceptional quality products at very competitive prices, as well as expert assistance whenever needed.

Specificatios :

Vacuum switches can have an electro-mechanical or solid-state switch structure. The normal state can be normally open (NO), or normally closed (NC). They can have single poles (SP), double poles (DP), or more than two poles. Vacuum switches havetwo type on a vacuum switch can be single throw (ST) or double throw (DT). The switch may be TTL well-suited. Electrical characteristics of vacuum switches to consider include:

  • switched current
  • switched AC volts
  • switched DC volts

Vacuum switches may be a sensor element, a sensor or transducer, an instrument or meter, a gage or indicator, a recorder or totalizer, and a controller. A sensor element or chip represents a "raw" device such as a strain gage, or one with no integral signal conditioning or packaging. A device or transducer is a more complex device with packaging and/or signal conditioning that is powered and provides an output such as a DC voltage, a 4-20 mA current loop, etc. An instrument or meter is aindependent unit that provides an output such as a display locally at or near the device. Typically, they also include signal processing and/or conditioning. A gage or indicator is a device that has a (usually analog) display and no electronic output such as a tension device. A recorder or totalizer is andevice that records, totalizes, or tracks force measurement over time. Includes simple data logging capability or advanced features such as mathematical functions, graphing, etc.

Features :

Sensor technologies for vacuum switches include:

  • piston
  • diaphragm
  • strain gager
  • semiconductor piezoresistive
  • MEMS piezoelectric
  • variable capacitance
  • vibrating element

Other important parameters to consider include switch accuracy, the type of material to be measured, features such as temperature compensation and temperature output, and electrical output. Important operating parameters to consider include operating temperature, maximum shock, and maximum vibration.

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