4 description of function, 1 functional principle, 1 control keys of vacuum controller v-850/855 – BUCHI Vacuum Controller V-855 User Manual
Page 16: Description of function 4.1, Functional principle, 4description of function

4 Description of function
16
V-850/855 Operation Manual, Version E
4
Description of function
This chapter explains the basic principle of the instrument, shows how it is structured and gives a
functional description of the assemblies.
4 .1
Functional principle
The Vacuum Controller V-850 and V-855 can be universally used for the display, adjustment and
control of vacuum. The integrated aeration valve and the precision pressure sensor are resistant to
chemicals making the Vacuum Controller a compact unit suitable for numerous applications in the
Lab. When using the vacuum controller with a Vacuum Pump V-700 or V-710 the new speed control
feature allows a hysteresis-free vacuum control with a low noise level.
4 .1 .1
Control keys of Vacuum Controller V-850/855
1
2
3
4
5
2
2
2
a Selection knob
b Functional buttons
c Display
d START button
e STOP button