VACUUBRAND DCP 3000 - Manual (Page 38)

page 38 of 64
2nd possibility:
+
Switching during pressure indication or graphic display
➨
Press the selection knob and keep pressed.
➨
Turn the selection knob while still pressed until the desired pressure
transducer is indicated (see VACUU•BUS address in the status line).
➨
Release the selection knob.
+
The selected pressure transducer is displayed in the status line as the
active pressure transducer.
Automatic switching between pressure transducers VSK
3000 and VSP 3000
If both a pressure transducer VSK 3000 and VSP 3000 are connected to
the vacuum gauge DCP 3000, the DCP 3000 automatically displays the
readings of the pressure transducer more suitable in the current pressure
range.
This requires both pressure transducers to be configured to corresponding
VACUU•BUS addresses (i.e. VSK x and VSP x). If the two VACUU•BUS
addresses do not correspond (i.e. VSK x and VSP y), an automatic switch-
ing between pressure transducers is not possible. It then is necessary to
reconfigure the address of one pressure transducer in order to enable
automatic switching (see section ”Reconfiguring the pressure transduc-
er” below).
Switchover points between pressure transducers VSK 3000 and
VSP 3000:
In case of decreasing pressure: Switching from VSK 3000 to VSP 3000
at a pressure of 0.7 Torr (1 mbar)
In case of increasing pressure: Switching from VSP 3000 to VSK 3000 at
a pressure of 3.7 Torr (5 mbar)
The active pressure transducer is shown in the status line. Furthermore,
a VSK 3000 is always displayed in decimal notation, a VSP 3000 in ex-
ponential notation.
Measuring differential pressure
A differential pressure between two pressure transducers can only be