Intek RheoVac SENTRY User Manual

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Figure 8 - System Diagram

a given probe remain unchanged. To custom label the SENTRY screen with actual probe locations, you
will need to plug a PS-2 style computer keyboard into the back of the SENTRY touchscreen. After
plugging in the keyboard, reboot the SENTRY (cycle power off, then on). Press the button labeled
‘Recal/Repair’ on the RheoVac SENTRY front panel. When the Recal/Repair options panel appears,
press the button labeled ‘Probe Labels.’ The Probe Location/Information panel will appear. A space
is provided for an eight-character description to be added to each probe label (this eight-character limit
is set due to space constraints on the SENTRY front panel). After you have input your custom labels,
press the Save button. Changes will take effect when you exit back to the front panel.

Complete evaluation of a typical condenser and exhauster system is accomplished using a multiple probe
RheoVac SENTRY configuration. A multi-probe installation provides centralized data collection for all
flow paths in the air extraction system, which will aid in locating leaks and identifying exhauster
malfunction. Each SENTRY CPU is capable of supporting up to twelve RheoVac probes. Therefore, it
is possible that the configuration chosen for your plant may have the SENTRY CPU monitoring probes
installed on more than one generating unit. Accordingly, it is imperative that the serial number of the
probes and their installed locations, as shown on the original factory configuration, be clearly retained
and readily accessible.


The RheoVac SENTRY System CPU touch screen provides operator access, interface and control of the
components of the system. This section discusses the data and diagnostic information available to
engineers and operators via this touch screen.

Main Screen — System Diagram

The CPU main screen will show a general layout of your SENTRY System. The drawing here is a
generic example. Touching a probe “button” or icon brings up the display screen associated with that
probe. The light at the lower left of the screen indicates communication status — when data is
transmitting, the light flashes red; when no data is being transmitted, the light is a steady green. At the
bottom of the screen are the
“buttons” that provide
access to the next level of
data detail. These buttons
access the Plot, Diagnostic
T o o l , D i s k I n f o ,
and Errors
f u n c t i o n s .

T h e

Recal/Repair function is
not used in the field except
as described above.

The STOP button should
only be used to stop

execution and all

communications with the
probes. This is necessary
only for factory personnel to
perform software updates
and system service.