Prior to use – VACUUBRAND DCP 3000 User Manual
Page 31
Prior to use
➨
Connect the VSK 3000 or VSP 3000 gauge head by its connecting
cable (VACUU•BUS line) to a jack at the rear side of the DCP 3000.
➨
Connect the gauge head to the vacuum chamber via either the small
flange connection, the hose nozzle, or PTFE tubing. Avoid contamina-
tion (oil/oil mist) of the gauge head when generating the vacuum with
an oil-sealed vacuum pump.
+
Do not position the gauge head directly at the inlet of an oil-sealed
pump. The diameter of the connecting tubing should be as large as
possible.
+
Inside a vacuum system where evaporation occurs, e.g., a rotary
evaporator, the vacuum is not uniform. For example, a condenser can
act as a pump, or the vacuum in the connecting tubing can be higher
or lower than in the application itself. This affects the measurement re-
sults. Therefore, carefully choose the position at which to connect the
pressure transducer.
+
Condensate and deposits will affect the measurement results.
+
If residues occur or when working with aggressive or condensable
substances, install a gas washing bottle in front of the pressure trans-
ducer.
+
Position the pressure transducer in such a way that condensate
cannot flow towards it.
VSP 3000:
Recommended orientation: Vertically with vacuum connection pointing
downwards. If mounting the VSP 3000 in any other orientation, a read-
justment is recommended (see section “Readjustment of VSP 3000”, pg.
+
If necessary, clean the gauge head.
➨
Switch the equipment on.