A lot of applications in the laboratory call for electronic vacuum control, that is, constantly adapting the pump´s volume flow rate to process requirements. The maximum volume flow rate of the unregulated pump can be changed in various ways:

• by cyclically turning the pump on/off (with the VNC 2 controller or the CVC 3000 controller with module VMS-B)
• by cyclically opening/closing an in-line solenoid valve (CVC 3000 or VNC 2) or
• by changing the pump´s motor speed continuously (VARIO^® pumps in connection with CVC 3000 or VNC 2 VARIO)

While VNC 2 is mostly used in vacuum network solutions where parameters are set once to control vacuum conditions, the CVC 3000 with its large display and user-friendly full-text menus is normally used as a workplace controller. 

-> Overview of vacuum control technology

Many accessories can be easily connected to both controllers: A coolant valve, an external venting valve or a liquid level sensor for catchpots are often required. Communication with sensors, VARIO^® - pumps, the Peltronic^® and all other connected components takes place via the VACUU·BUS^® control system. It is self-configuring, meaning that connected components will be automatically detected, configured and monitored by the vacuum controller. The self-configuration of the vacuum controllers due to the VACUU·BUS^® system makes them especially user-friendly and rules out any mix-up of components. Chemically resistant IP 67 connectors allow the connection of many components.

VACUU·BUS^®

• self-configuring plug and play
• sealed plugs highly resistant to chemicals
• no danger of getting plugs confused
• connect almost any number of components

Product comparison

CVC 3000		-	-			0.1		-	-
VNC 2		-	-			1		-	-
CVC 3000 + VSP 3000, KF DN 16		-	-	-		1 x 10-3	-		-	-
CVC 3000 + VSP 3000, KF DN 25		-	-	-		1 x 10-3	-		-	-