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VIBRATION MONITORING FOR BEARINGS AND SHAFTS

     Each rotating machine has its own vibration signature as a result of the rotation of bearings, shafts and gears. On-line, real time vibration monitoring can detect problems caused by bearing damage, shaft imbalance as well as other problems   The key to preventing costly unscheduled shutdowns is the focused, early detection of damage through vibration analysis which can provide sufficient time for ordering new parts and scheduling maintenance.

Vibration Monitoring to Detect and Predict Bearing Failure and Identify Shaft Imbalance

Octavis provides a real timer monitoring systems at a reasonable price


Pump Bearings

Cooling Towers

Compressors

Vibration Applications

Bearings and shafts can fail due to overload, misalignment, insufficient lubrication, and assembly defects. The Octavis system is designed to display, in real time, the amplitude and frequency curve which can immediately show problem areas.

Bearing Applications

 The Octavis system is designed to monitor the inner race, outer race, and ball elements of a roller bearing. In order for Octavis to monitor the critical frequencies associated with the bearing components, it needs the following inputs:
  - Bearing geometry (number of balls, ball diameter, and pitch diameter or DIN number)
  - Rotational speed (RPM)

 Unbalance Applications

An unbalanced shaft can cause premature bearing failure and adversely affect other system components. The  Octavis system can monitor the degree of shaft unbalance. In order to monitor the shaft, the following input is required:
  - Rotational speed (RPM)

 Octavis System - Hardware and Software working together

Octavis Hardware and Software work together to provide continuous monitoring of bearings, shafts, etc. by converting the acceleration and time into the frequency domain using Fast Fourier Transformation (FFT) which is displayed in graphical form on the computer and monitored by a series of LED on the unit itself.

 The monitor can monitor up to 20 selectable frequencies or up to 5 different elements. Free Vibration Software is available providing spectral analysis FFT, Envelope curve-FFT and Trend Analysis.

 The system uses a micromechanical acceleration sensor. Data can be collected, processed and evaluated with no expert know-how required.


Continuous monitoring
Octavis system is designed for the early detection of rolling element bearing damage or unbalance; continuous monitoring offers a more reliable alternative to intermittent analysis.

One unit  can monitor up to five different objects or 20 individual frequencies. An object is defined as a rolling element bearing or a shaft.
With Octavis system permanent vibration monitoring is no longer a question of price.

 

The integrated expert
Physical vibration is detected, the frequency spectrum is calculated and e.g. the rolling element bearing state, the unbalance etc. are evaluated. The condition can be directly read on the unit and digital output are provided for alarming.               
 

Spectrum Display

Damage Display

Setup Overview

Click for larger Display

Click for larger Display

 


Operating condition OK

Early warning of bearing wear or shaft unbalance

Critical alarm indicating bearing damage or extreme shaft unbalance

Vibration Analyzer Kit

The analyzer kit includes software, sensor, communication cables, temporary magnet, and power supply in a case for you to carry around to different applications and take readings.

You can take a snapshot of the spectrum you choose and download that into another program like Excel to keep as a reference.

For more critical applications that you may want to monitor constantly you can just get another sensor, permanently mount to the motor, fan, pump, etc... and the sensor will signal via two switching outputs (early signal, late signal). Each sensor has the ability to monitor up to 5 objects simultaneously. This allows you to monitor more than one thing on a motor as long as there is a solid transmission of vibration (e.g. 2 sets of bearing & unbalance). Since the sensor is doing the evaluation for you it eliminates the labor and time that it takes to evaluate each application by using charts.

The analyzer kit is U90009. It is $995. The kit's sensor is part number VE1001 and lists for  $773.

Models

VE1001
Frequency range:
3...6,000 Hz
Monitoring range [rpm]: 120...12000
Interface: RS-232
Protection: IP 67, III
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case: die cast zinc nickel-plated; keypad: polyester

VE1002
Frequency range: 0.125 ...500 Hz
Monitoring range [rpm]: 12...1500
Interface: RS232
Protection: IP 67, III
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case: die cast zinc nickel-plated; keypad: polyester
VE1103
Frequency range:
24...12500 Hz
Monitoring range [rpm]: 1.500...96.000
Interface: RS-232
Protection: IP 69K
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case: die cast zinc nickel-plated
VE1101
Frequency range: 3...6000 Hz
Monitoring range [rpm]: 120...12000
Interface: RS-485
Protection: IP 67, III
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case: die cast zinc nickel-plated
VE1102
Frequency range:
0.125 ...500 Hz
Monitoring range [rpm]: 12...1500
Interface: RS-485
Protection: IP 69K
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case:
die cast zinc nickel-plated
VB1001
Frequency range:  3...6000 Hz
Monitoring range [rpm]: 500...6000
Interface: RS232
Protection: IP 67, III
Operating voltage: 10...32 DC
Alarm Outputs: Red, Yellow
Case: die cast zinc nickel-plated; keypad: polyester

Accessories

-  Brochure (B10104)
-  Setup Guide (B20204)
-  Socket M12 (E10967)
 - Y-connector cable M12 (E11664)
-  RS-232 cable for  (E11572)
-  Impulse tester (E30082)
-  Inductive proximity switch (IFW201)
-  Mounting magnet (U90002)
-  Octavis Vibration diagnostic unit (VE1001)
-  Expert software f(VES001)

U90004

 

$995.00

-  Monitoring unit with LED Damage Indicators

VE1001

$750.00

VE1002 $750.00
VB1001 $750.00
-  Protected against water during high pressure/ steam cleaning and without monitoring LEDs

VE1103

 

$750.00

VE1101 $750.00
VE1102   $750.00

-  Octavis parameter configuration software -
  required to set up monitor parameters

VES001

 

$45.00

-  RS232 setup cable - required to communicate with monitor via a PC

E11572

 

$34.00

-  Pulse generator to generate defined mechanical pulses

E30082

 

$21.00

-  5 m, straight – required to supply power to monitor and connect outputs

E10967

 

$21.00

-  Y-Cable for connecting analog or pulse input –
  required for variable speed applications

E11664

 

$53.00

-  Power supply
    Input: 100...240 V AC (50...60 Hz) / 200 mA
    Output 24 V DC / 330 mA

E30080

   

-  USB/RS485 adapter cable
 
-  USB connector type A / M8 socket

E30098    

Contact

See Vibration Switches

See Vibration Transmitters

Technical Contact:
   Larry Hoopes
   Application Engineer
   Tel: 610-524-4489
    Fax: 610-524-2856
   e-mail: larry_hoopes@ifmefector.com

Robertshaw Vibraswitches

 4-20ma Transmitters

   
 

 

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