Druck DPI 530, Руководство пользователя

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DPI 530 User Manual 19
K162 Issue No. 2
3 Operation
3.1 Description
This instrument operates in two modes, measure and control. A push
switch on the front panel switches between the two modes. An LED
indicates green for measure mode and red for control mode. A further push
switch on the front panel switches between the span divider and the set-
point adjuster.
3.1.1 Measure Mode
In the measure mode the transducer senses the pressure at the outlet port
and displays the resulting pressure reading. The controller remains
switched off and disabled in measure mode.
3.1.2 Control Mode
In the control mode, the instrument's controller changes the pressure to the
value selected by either the span divider or set-point adjuster. When the
controller reaches the set-point the `Ready' LED illuminates.
In the remote control mode an input voltage of 0 to 10 V or 0 to 20 mA
controls the pressure. A varying voltage or current may be used to replace
the set-point signal from the set-point adjuster or span divider controls.
When enabled on the rear panel, the voltage or current can be used to
change the set-point over the full-scale of the instrument, including
negative pressures to -1 bar.