Vibration Switches and Monitors presentation.

1. By
Edward Moschetti
Control Specialties
2503 Monroe Drive
Gainesville, GA 30507
770 532-7736 Toll Free 800 752-0556
Fax 770 535-0536 info@control-specialties.com
See our website at
www.control-specialties.com
for more information
Vibration Switches
and Monitors
By Robertshaw
Vibration Switches
and Monitors
By Robertshaw
1

2. Vibrations and Frequency Relationship
Robertshaw vibration switches and
monitors minimize production shut down
time and repair costs by measuring the
total accelerated force (shock) present on a
machine. Individual acceleration
measurements are summed to yield the
total destructive force acting on a machine.
This information enables you to proactively
and strategically maintain equipment.
Robertshaw Vibration Switches and
Monitors measure the total acceleratory
force (shock) present on a machine or
piece of equipment. Vibration switches can
be wired in through machine controls to
accomplish a shut down or alarm if values
exceed preset levels. Vibration monitors
provide a continuous 4-20 ma signal for
trending and or contacts for shutdown or
alarm.
In general terms, vibration can be described as
mechanical motion or oscillation of a machine
about its point of equilibrium. Displacement is
the measure or movement or motion. Frequency
is the number of sine waves generated for
rotating equipment.
Frequency = Machine RPM/60
Vibration measurement benefits include:
*Shutdown and early warning before failure
*Unattended machine protection
*Predictive maintenance
*Reduced severity of machinery damage
*Savings by reduced downtime and repairs
Vibration monitoring equipment can avoid costly
down time and repairs.

3. Typical Applications

4. Robertshaw Model 566

5. Robertshaw Model 335A & 366 Vibration Switches

6. Monitor Up Eight Vibration Points

7. Selection Guide Steps 1 to 5

8. Selection Guide Step 6a and 6b

9. Vibration Switches and Monitors Selection Guide

10. Virtually any equipment which rotates or has other forms of
reciprocating motion will vibrate when it becomes unbalanced
due to wear or other factors. Monitoring vibration of this
equipment is your insurance to prevent costly breakdowns
and down time.
Visit our web site for more application and price information
on Robertshaw vibration switches and monitoring equipment.
Control Specialties
2503 Monroe Drive
Gainesville, GA 30507
770 532-7736 Toll Free 800 752-0556
Fax 770 535-0536 info@control-specialties.com
See our website at
www.control-specialties.com
for more information