BUCHI Vacuum Controller V-855 - Manual (Page 14)

3 Technical data
14 V-850/855 Operation Manual, Version E
3 .2 Technical data overview
Technical data
Vacuum Controller V-850/855
Dimensions casing ( W×H×D) 160Ч115Ч120 mm
Weight 700 g
Power supply 30 VDC from RJ-45 connector when using Controller
with a Rotavapor R-210/215 or Vacuum Pump V-700/710
or from the power pack for stand-alone versions.
Frequency 50/60 Hz
Power consumption 10 W
Interfaces USB (data transmission), RS 232/RS 485 (communica-
tion), remote control, cooling water valve, Switch Box,
vacuum valve
Environmental conditions For indoor use only 10-40 °C, up to 2000 m, maximum
relative humidity 80 % for temperatures up to 31 °C, and
then linearly decreasing to 50 % at 40 °C
Magnetic valve supply 24 V
Vacuum connection GL-14
Measuring principle Capacitive
Measuring range 1400–0 mbar
Control range 1100–1 mbar
Accuracy ±2 mbar (±1 digit) following alignment at constant
temperature
Temperature response 0.07 mbar/K -1
Display range 0–1400 mbar
Hysteresis Automatic or 1–500 mbar
Installation category II
Pollution degree 2
Conformity CSA/CE
Noise level < 70 dB
3 .3 Materials used
Materials used
Component Material designation
Pressure foil Polyester
Casing PBT
Diaphragm (aeration valve) FFKM
Aeration valve PEEK