VNC 2

Description

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Vacuum Network Controller VNC 2

Vacuum measurement and control in the range of
1100 - 1 mbar (hPa)

The VNC 2 enables an automatic, on-demand vacuum control either via 2-set-point valve control or switching on/off the pump. The integrated pressure transducer is chemical resistant and offers an outstanding measuring accuracy independent of gas type. The device is designed for precise and reliable control of recurring routine jobs. The vacuum controller VNC 2 can only be operated with components compatiblle with the VACUU·BUS-system. Special versions of the controller, e. g. for installation in laboratory furniture, are available. Further information on request.

The Vacuum Network Controller VNC 2 is especially optimized for application dependent control of vacuum pumps in local vacuum networks and serves as controller in the network pumping units PC 500 / 600 LAN NT.


There are five modes of operation:

Pressure control
Two set point control of a vacuum pump or a solenoid-operated vacuum line valve


Continuous pumping
Control of a vacuum pump


VACUU•LAN®
Control of a VARIO Diaphragm Pump and/or on/off control of a solenoid-operated vacuum line valve or a vacuum pump, according to a specified vacuum level or timing, for fully automatic control of a vacuum network

Monitoring
Control of a vacuum pump or a solenoid-operated vacuum line valve according to specifications for min./max. pressure and shutdown time. Typical processes: aspiration, filtration, vacuum drying

Process management of Chemistry Hybrid Pump RC 6
monitoring of internal vacuum of the RC 6, optionally with vacuum valve and bypass valve

Advantages

  • Precise and stable pressure transducer with high chemical resistance
  • very compact design
  • easy menu-guided operation
  • flexible parameter adjustment for vacuum networks
  • acoustic and visual alert signals
  • interactive communication via RS 232C interface

    Technical data

     

    Measurement range 1100-1 mbar (hPa), 825-1 Torr
    Display alphanumeric LCD display
    Max. range of pressure control 1060–1 mbar (hPa), 795–1 Torr (depending on gas load and pump)
    Uncertainty of measurement < ±1 mbar (0.75 Torr), ±1 digit
    Temperature coefficient of transducer < ±0.07 mbar/K
    Pressure transducer capacitive, made of alumina ceramic, gas type independent 
    Vacuum connection PTFE-tubing conn. 10/8 mm with hose nozzle DN 6/10 mm (small flange KF DN 16 opt.)
    Interface RS 232C
    Power consumption 7.5 W
    Mains supply 100-230 V ~ 50-60 Hz
    Dimensions (L x W x H) benchtop / built-in version* 163 x 90 x 68 mm / 138 x 90 x 120 mm
    Weight 0.8 kg
    * versions including front panel on request

    Order data

     

    Vacuum network controller VNC 2
    with on/off switch, IEC socket and instructions for use.     		Best.-Nr.
    VNC 2 68 30 70
    VNC 2 panel-mountable built-in version with valve (without panel)* 68 30 90
    Mains cable please order seperately:
     Mains cable CEE 61 20 58
     Mains cable CH 67 60 21
     Mains cable UK 67 60 20
     Mains cable US 61 20 65
    Electromagnetic valve VV-B 6C, small flange KF DN 16, hose nozzle DN 6/10 67 42 91
    Cooling water valve VKW-B, G 3/4", G 1/2", hose nozzle DN 6 67 42 20
    Extension cable VACUU·BUS, 2 m 61 25 52
    DKD calibration on first delivery 90 02 16
    DKD recalibration 90 02 17

    * versions including front panel on request