Competitors
Available PdM Technologies
Functions
technology
Characteristic
Ultra Violet
Infra Red
Ultra Sonic
PD
Visual




Pinpoint




Voltages

N/A
Current dependent


Non destructive




2 (daytime)
Many
Many
Many
Prices level
Manufacturers
High
Medium
Low
Available PdM Technologies
Mission
technology
Characteristic
Ultra Violet
Infra Red
Ultra sonic
PD
Contamination


Undefined

Loose hardware


Undefined

RFI, TVI, AN


Undefined

Connections


Undefined

Lubricant (oil)


Undefined

Load line (Current)


Undefined

Indication
Indication
Undefined

Internal faults
Available PdM Technologies
Performance
technology
Characteristic
Ultra Violet
Infra Red
Ultra sonic
PD
Temperature




Audio Noise







n/a
Ground patrol



n/a
Airborne



n/a
Driven



n/a
Ambient limitations
Distance Limitation
Mode of operation:
Corona Detection Methods
Daytime Solar Blind UV Cameras
•
•
•
Ofil - DayCor® products
Ofil – UVolle
CoroCAM
Other
•
•
•
Ultrasonic
RF - Radio Frequency
Night UV cameras - long exposure
Corona Detection Methods-Rejects
Non imaging devices - limitations
•
Detection distance - 50 Meter
•
Cannot pinpoint corona source
•
Disturbed by noisy environment
•
Unfit for airborne inspections
Daytime Competitor
DayCor® Vs. CoroCAM
Features
Sensitivity
Ergonomic
Recording
Specifications
Specifications
Performance
Ofil Support
Methodology
UGM
Comparison test - Results
 Test conditions
 Same day and time
 Identical source
 Identical distance
Click to
Play
CoroCam
 69% of the max gain
 Counting is 900/min (15/Sec)
Click to
DayCor®
 28% (70/250) of max gain
 Counting is 3259/min
Play
Play
Outcomes and Conclusions
• DayCor® Gain 2.4 times lower
• DayCor® count 3.6 times higher
DayCor® sensitivity - 9 times higher
DayCor® Vs CoroCam
Sensitivity Comparison
[ Watt/cm^2]
DayCor®
High
3x10-18
CoroCam
Low
8x10-18
DayCor® sensitivity is 3 times higher than CoroCAM
Ofil can detects
1.5 pC from a distance of 8m at normal video rate (25 or 30 frames/sec)
without any image processing.
Feature - Sensitivity
DayCor® has the highest sensitivity due
to:
 Large efficiency collection area
 High quality solar blind filter
 Strong and sensitive MCP
 Narrow FOV - Filed Of View
Feature - Long Integration
Low frame rate
lingered shots of each scene
• Used by CoroCAM to compensate for
low sensitivity
• Must use a tripod
• Slow inspections – unfit for airborne
nor driven
Feature - Long Integration
Not recommended:
Recommended to:
1. Smearing picture
1. Overcome background
2. Lingered inspection
3. Tripod required.
Click to
Play
disturbances/noise
Conclusion - Sensitivity
Characteristics
Distance
Airborne Inspection
Pinpoint accuracy
DayCor®
CoroCAM
High
Low
high speed
Hovering
High
Med
Narrow angle
5H x 3.75V Deg
Wide angle optics
8H x 6V Deg
Real Time
Delayed - Image
processing (Video delay)
None
Smearing
Absolute
Limited
Pinpoint factors:
FOV
UV-Vis overlay
Smearing
Solar Blind
Feature - Ergonomic
Recording of
Findings
Hands Free
Inspection
Activation of
operational modes
Safe
Operation
Ergonomic
Design
Duration of
Daily Inspection
Feature - Ergonomic
DayCor®
CoroCam
• Carrying vest
• Harness
• LCD screen
• View finder
• Weight 3.3kg
• Weight 2.3kg
• Video Stills capture
• Stills picture only
Feature - Ergonomic
Ergonomic Design
CoroCam
Captive hands and eyes
DayCor® Classic
Hands free inspection
Feature – Video Recording
Corona is an intermittent phenomenon
Video Recording
Still picture
Play
Processing is done at the office – far from the actual scene. Video is
preferable !
Feature - Ergonomic
Ergonomic Design
CoroCam:
Additional employee is required
For recording process
CoroCam
Working with tripod is
Essential for working in the
LI (low frame rate) mode
Conclusion - Ergonomic
DayCor®
CoroCam 504
Video - Internal
Stills
Yes
No
Working hours
Extended
Limited
Muscle strain
Eye strain
Power
Camera load on big muscles
LCD screen
Single battery 180min
Raised arm
View finder
Single battery 90min
Safe operation
Yes
No
Characteristic
Findings recording
Hands free scan
Ofil Supportive Activities
UGM
Ofil Supportive Activities
Corona- where?
No
Critical
component?
Yes
No
Critical
location?
Material type
Yes
No
Can it
be damaged by
corona?
Yes
AN, RI, TVI
concern?
Yes
Repair or replace
ASAP
Low
Corona
intensity?
Medium
No
Monitor for
additional signs
High
Repair or replace
ASAP
Schedule repair or
replacement
Market Install Base
Ofil
80%
CoroCam
20%
The End