Vacuum Control (Generator)
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This schematic shows a vacuum generating application where positive pressure is regulated to a vacuum Venturi to generate and control precise vacuum levels. The Venturi generates vacuum when pressure flows across the internal orifice, this naturally pulls a vacuum. In this example, the Venturi is rated to produce -10 psig with 100 psig input. By adding a vacuum transducer as second-loop feedback calibrated 0-10 VDC = 0 to -10 psig, this process becomes linear and proportional to the commanded setpoint. A command of 5 VDC (50 psig) produces a 5 VDC (satisfied) response when the vacuum level reaches -5 psig.
Related Content
- White Paper: Resolution in Proportional Control
- White Paper: Digital vs. Analog Control in Proportional Applications
- Cordis Series High Resolution Proportional Pressure Controls
- Cordis Pressure Controls FAQ
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