VNC 2

Description

VNC 2

The vacuum controller VNC 2 makes automatic, on-demand vacuum control possible either via two-point valve control or by switching the pump on/off. The version VNC 2 VARIO offers continuous vacuum control with VARIO^® pumps. The integrated alumina ceramic diaphragm vacuum sensor is chemically resistant and offers outstanding measuring accuracy independent of gas type. The VNC 2 vacuum controller is designed for precise and reliable control of recurrent routine jobs that do not require regular adjustment. It works with components compatible with the VACUU·BUS^® system. Special versions of the controller, e.g., for mounting into laboratory furniture are available. Further information on request.

Performance features

on-demand control of process vacuum, cooling water and venting; special program for operating vacuum networks like VACUU·LAN^®
easy changing of vacuum set points also during operation
automatic or manual setting of the pressure switching interval (hysteresis)
integrated relay for switching pumps on/off (except VNC 2 VARIO)
selectable acoustic alert signals

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Technical data / Ordering data

Technical data

Technical data	Unit	VNC 2
Vacuum sensor		Integr.
Upper measuring limit	mbar/torr	1100 / 825
Lower measuring limit	mbar/torr	1 / 1
Measurement principle		Ceramic diaphragm (alumina), capacitive, gas indep., absolute pressure
Measurement uncertainty		< +- 1 mbar/hPa/torr / +- 1 digit (after adjustment, constant temp.)
Temperature coefficient		< 0.07 mbar/hPa/0.05 torr /K
Ambient temperature range (operation)	°C	10 - 40
Ambient temperature range (storage)	°C	-10 - 60
Max. media temp. for continuous operation / short times	°C	40 / 80
Material of outer housing		Coated metal housing
Degree of protection		IP 20
Max. power for VACUU·BUS^® (24V DC)		400 mA (line voltage: 110-230 V) / 340 mA (line voltage: 100-110 V)
Interface		RS 232C
Dimensions (L x W x H)	mm	163 x 90 x 68
Weight	kg	0.8
ATEX-approval		II 3G IIC T3 X Internal Atm. only
Items supplied		Vacuum controller complete with integrated vacuum sensor, ready for use, with manual.
Accessories		Rubber vacuum tubing DN 10 mm (686002) PTFE tubing DN 10/8 mm (638644) DAkkS calibration with first delivery (900216) DAkkS recalibration (900217) VACUU·BUS^® accessories

VNC 2 - Dimension sheet

-Technical data are subject to change without notice-

Ordering data

Product name	Mains voltage and frequency	Plug	Order no.
VNC 2	100-230 V~ 50-60 Hz	IEC plug EN 60320	683070

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	-		-	-