The rheovac, Air in-leak monitor – Intek RheoVac SENTRY User Manual

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In 1994, Intek Inc. introduced the RheoVac


air in-leak monitor for continuously measuring condenser

air in-leakage. This monitor was the first and only instrument to measure all of the necessary fluid
properties in the condenser exhaust line to provide an accurate, reliable air in-leakage measurement:

— the RheoVac


Air In-Leak Monitor*

*USPNs 5,485,754; 5,752,411

The next generation instrument, the RheoVac SENTRY, uses the same proven sensor configuration, but
brings new capabilities consistent with the industry’s need for local as well as centralized and remote

The RheoVac technology was developed with the help of power plant engineers, to overcome the
deficiencies of existing air in-leakage and condenser performance measurement instrumentation and to
create a powerful, complete condenser system analysis tool. No single product provides power plant
engineers with as much diagnostic information related to the condenser as the RheoVac SENTRY System.
In addition to providing reliable, real time indication of condenser air in-leakage, the SENTRY System
provides valuable information that can be used to analyze problems associated with vacuum system
components, thereby improving plant efficiency, reducing downtime and increasing maintenance


The following are some of the unique benefits of the RheoVac SENTRY System:

Distinguishes between air flow and water vapor flow

Measures exhauster capacity

Measures vacuum quality

Allows operators to distinguish between air in-leakage and pump failure

Continuous monitoring provides event time stamp

Provides high resolution, range and accuracy of data

Retrievable on-board data storage

Provides data for condenser performance diagnostics

Provides centralized access to the data from all of the RheoVac probes installed in the system

Provides easy access to individual probe’s data as well as on-screen review of selected
common data from all of the probes for performance analysis

Graphic representation of monitored data gives visual indications of performance changes

Provides easy review of “before” and “after” data through the diagnostics screen to evaluate
the effect of system changes

Portable remote measurement (optional feature) of air-in-leak changes through the use of a
hand-held display unit – used to locate leaks