Operation
38
Operation Manual LVS 105 T
– 10 ef
+
Parameter
Values from/to
Resolution
Default
Unit
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 cal-
ibration are the atmospheric pressure and the ultimate pressure "low pressure" of the sys-
tem.
Atmospheric pressure
500...1500
1
1000
mbar
Ventilation valve open.
The pump is switched off.
The sensor is subjected directly to the ambient pressure.
Low pressure
1...200
1
1
mbar
Ventilation pressure closed.
The pump runs at a rotation of 100%.
The sensor is subjected directly to the ultimate pressure.
NOTE
The system must be at equilibrium when the pressure is input.
à The pressure value must be 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 con-
trol valve and reduce the service life of the vacuum control valves!
Auto start
No / Yes
No
In case of power failure, the last active operating mode is started again.
NOTE An automatic start-up can cause undesired reactions. Heed the safety instructions
(see section
Cooling water
Always
Only during oper-
ation
Run-on after end:
Always
0...60
1
min
Allow ventilation
No / Yes
No
NOTE
Heed the safety instructions (see section
Setting this option disables all other ventilation settings in the individual modes. Enabling
ventilation can be protected with an ADMIN password if necessary.
The devices have a connection for inert gas DN4.