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Operation
32
operation manual VCpro 600
Parameter
Values from/to
Resolution
Default
Unit
2
– Display
Brightness
0…100
1
70
%
Color scheme
Light
Dark
Light
Pressure unit
mbar
kPa
Torr
Psi
mbar
Pressure scale
Logarithmic
Linear
Logarith-
mic
NOTE
Logarithmic and linear output of the pressure range for both numerical and graphic
display.
Pressure range
Maximum pressure
pMax
0…1000
1
1000
mbar
Minimum pressure
pMin
0…1000
1
1
mbar
NOTE
For a logarithmic pressure scale, pMin = 1 mbar is used automatically.
Time range graph
0..1200
1
60
sec
NOTE
Defines the time range for the graphic display.
Graph display
mode
Static
Dynamic
Static
Static: Pressure profile is updated from left to right on the display.
Dynamic: Pressure profile runs in real time from right to left via the time axis.
3
– Control system
Calibration
NOTE
Requires a calibrated sensor for the calibration!
The vacuum controller uses a linear calibration of the sensor. The support points for the
calibration are the atmospheric pressure and the ultimate pressure "low pressure" of the
system.
Atmospheric pres-
sure
500...1500
1
1000
mbar
Ventilation valve open.
Vacuum control valve closed (VCpro 601) or pump is switched off (VCpro 602).
The sensor is subjected directly to the ambient pressure.
Low pressure
1...200
1
1
mbar
Ventilation pressure closed.
Vacuum control valve open (VCpro 601) or pump runs at 100% rotation (VCpro 602).
The sensor is subjected directly to the ultimate pressure.
NOTE
The system should be in equilibrium for input of the pressure
Pressure value must remain constant.
Hysteresis
1...200
1
10
mbar
Hysteresis is a range of tolerance around the pressure setpoint.
NOTE
A hysteresis value that is too small can cause frequent switching of the vacuum
control valve and reduce the service life of the vacuum control valves!