Fluke&Farnell webinar
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Transcript of Fluke&Farnell webinar
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Drum dryer maintenance
Drum dryer is driven by four electric motors through gear box.
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Predictive maintenance measurements
Fluke 805FCVibration measurment
Fluke 1587FCInsulation measurment
Fluke 376FCLoad measurment
Fluke TiS45Temperature measurment
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How does Fluke Connect™ help?
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Define assets
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Vibration measurements
time
Level
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Fluke 805’s Innovative Sensor
Bandpass4kHz – 20kHz
Bandpass10Hz - 1kHz
Bearing EvaluationCF+
Machine Evaluation
ForceSensor
Accelerometer
• When wrong force is applied to vibration pen, you get wrong results
• 805 waits for the right force before starting the measurement
• This unique feature gives reliable results
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Bearing Vibrations
• Bearings are crucial parts in rotating equipment• For maintenance purpose the bearing vibrations
are measured and evaluated to get the condition
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A healthy bearing
time
Level Peak
RMS
RMSPeak
CF = Crest Factor is close to 3
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Bearing’s wear and tear (1)
time
LevelPeak
RMS
RMSPeak
CF = Crest Factor is increasing
Spall or dent
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Bearing wear and tear (2)
time
Level
RMSPeak
CF = Crest Factor is decreasing
Peak
RMS
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CF
Time
No Faults Development Detoriation
Detoriation gets worse
CF
Replace
RMSPeak
CF =
CF =5
Disadvantage of Crest Factor
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CF - Evaluation
CF
Time
No Faults Development Detoriation
Detoriation gets worse
CF
Replace
CF+
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Meaurments gained from Fluke 805FC
Overall vibration measurements
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High overall vibration because of the nature work of drum dryer
Bandpass10Hz - 1kHz
Machine Evaluation
Overall vibration measurements
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High CF+ value cause by waer bearing
Bandpass4kHz – 20kHz
Bearing EvaluationCF+
CF+ measurements
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Temperature measurements
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the electrical equipment should have at least 40% load for a good inspection
Temperature measurements
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Temperature measurements
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Temperature in insulation life time
•Max temp exceeded by:– +10° C– +20° C– +30° C
•Insulation life reduced by:– 50%– 75%– 88%
Motor Inspection Basics:
• With failing insulation the overall motor temperature increases
• Overheating causes failures and reduces insulation time
• Production losses caused by downtime can be very high
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Temperature measurements
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Occurs when the insulation between motor windings deteriorates (think about dust, sand, water, corrosion etc), causing a short circuit in the windings.
Insulation measurements
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• Look for a resistance value of >1 megaohm per kilovolt.• Best if part of periodic maintenance schedule.• Next power up, check for shaft voltage and bearing current.
Insulation measurment
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Insulation measurment
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1. Connect 2. Capture 3.Save 4. View Measurements 5.Share Measurements
7. ViewEquipment Records
8. View Work Orders
6. Collaborate 9. Visualizeon Equipment Health
Technicians can ….
A team can ….10. Share
Equipment Health
With Fluke Connect™…
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