Manual switching between pressure transducers, Measuring differential pressure – VACUUBRAND CVC 3000 User Manual

Page 58

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Manual switching between pressure transducers

Select the menu item ”Sensors” in the menu ”Configuration”.

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Connected gauge heads are displayed in the order of their VACUU•BUS

address: VSK 1 - VSP 1 - VSK 2 - VSP 2 - ... - VSP 4.

Select the desired gauge head by turning and pressing the selection

knob.

Press the selection knob again to exit the configuration menu.

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The selected gauge head is not displayed in the status line as active

pressure transducer.

Measuring differential pressure

A differential pressure between two pressure transducers can be deter-

mined and indicated either between two gauge heads VSK 3000 con-

nected to the CVC 3000 or between the internal pressure transducer of

the CVC 3000 and a gauge head VSK 3000 connected to the controller.

Vacuum control to the differential pressure is possible (e.g., vacuum con-

trol in relation to the atmospheric pressure).

Differential pressure between two gauge heads VSK 3000:
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This requires one of the two gauge heads to be defined as reference

(e.g., VACUU•BUS address ”Ref. 1”).

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Additionally, both gauge heads have to be configured to correspond-

ing VACUU•BUS addresses (VSK x and Ref. x). If the two addresses

do not correspond (VSK x and Ref. y), no differential pressure will be

determined or displayed.

The displayed pressure value is: (”pressure value of Ref. x” minus

”pressure value of VSK x”) Torr (mbar).

In case of negative differential pressures the pressure reading flashes.

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In case a VSK 3000 pressure transducer (VSK x) as well as a corre-

sponding pressure transducer defined as reference (”Ref. x”) are con-

nected to the controller, the ”Vac control function” automatically controls

to the differential pressure - as long as the pressure transducer VSK x

is selected from the ”Sensors” submenu as active pressure transducer.

Differential pressure between the internal pressure transducer and

a connected gauge head VSK 3000:

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