Envision Health JB
TM

Vibration Analysis Module
As part of Dresser-Rand’s
Envision suite of condition
monitoring tools and services,
the vibration module aids
prediction of incipient problems
before they escalate into costly
maintenance events or unit
failure. The Envision Health JB
works individually or in tandem
with D-R’s Envision compressor
performance monitor (CPM) to
provide you with information
to help increase machinery
availability, improve productivity
and reduce operation costs.

D-R’s Envision Health for Journal Bearings
Vibration analysis and diagnostic aids in the early detection of incipient problems in rotating equipment. Rotor or shaft vibration analysis can help in
recognizing equipment problems one to nine months before a problem deteriorates to unit failure or lost production. By having advanced warning and
problem diagnosis, equipment operators can plan ahead for operation and
maintenance activities.
The Envision Health JB vibration data acquisition and software system
provides comprehensive alarm and diagnostics for deep insight into journal
bearing machines. Envision Health JB is based on proximity probe displacement measurement for comprehensive analysis under transient or steady
state conditions. When combined with performance analysis, these tools
form the major components of a predictive maintenance program.
With proximity based vibration monitoring, a user can detect a wide array of
mechanical issues, including:
• Rotor imbalance, misalignment and bow
• Compressor or turbine blade failure
• Bearing damage
• Bearing lubrication problems
• Seal, labyrinth or coupling damage
• Electrical problems with the generator and motor
• Process-related vibrations (e.g. surge, stonewall)
• Loose machinery components
• Structural resonance
• Component rub
Advantages of Using D-R’s Envision Health JB

Predicting Signs Of Trouble
Problem begins

Vibration analysis
diagnoses problem,
identifies cause
Oil analysis
and location
diagnoses
1-9 months
problem
1-6 months
Audible noise
weeks

Machinery
Health
TIME

Rising
temperatures
days

Combined Control and Diagnostics Function
Traditional rotating equipment control systems
provide only average overall vibration level
indications and simple machine protection functions. If comprehensive vibration diagnostics is
required with these control systems, often two
or more separate systems must be added. The
Dresser-Rand Envision software eliminates
the need for separate systems by combining
machinery control; operations with performance and
diagnostics. By adding Envision CPM¹ and Envision
Health to a standard D-R control system, Envision