Pencil surface probes are equipped with an adjustable collar that helps to achieve the optimal angle for inspection and ensures greater stability. Belonging to the family of detachable stainless-steel shaft surface probes, these pencil probes feature small coils and a small-diameter housing built for higher frequencies. They are usually used for surface breaking crack detection.
Advantages
Excellent for small defect detection.
Good stability on flat surfaces.
Available with Powerlink™ technology.
Broad selection of frequency-ranges.
Wide variety of coil configurations available.
Applications
Through paint inspection of aircraft rivets.
Aircraft structure, unit, and engine inspection.
Through paint detection of stress corrosion cracking in stainless and carbon steel.
Surface crack inspection of manufacturing and transportation equipment.
Reflection Differential
Reflection type probes
Also known as send-receive or driver-pickup probes
Suitable for small defects, such as fatigue cracking.
Less drift than bridge probes.
Directional sensitivity.
Withstands variations in temperature.
Driver and pickup coils can be separately optimized for their intended purpose.
Wider frequency range, as driver coils do not need to be balanced to the pickup coils.
Olympus reflection differential type probes give a clean and strong signal as shown.
Type
Coil
Frequency
Shielding
Connector
Part ID
Item Number
Cable ID
Item Number
Pencil
Reflection Differential
500 kHz to 3 MHz
Unshielded
Triax Fisher
9213423
U8623173
SPO-6687
U8800538
Pencil
Reflection Differential
3 MHz to 6 MHz
Unshielded
Triax Fisher
9213424
U8623174
SPO-6687
U8800538
Pencil
Reflection Differential
500 kHz to 3 MHz
Shielded
Triax Fisher
9213425
U8623175
SPO-6687
U8800538
Pencil
Reflection Differential
3 MHz to 6 MHz
Shielded
Triax Fisher
9213426
U8623176
SPO-6687
U8800538
Pencil
Reflection Differential
500 kHz to 3 MHz
Shielded
Powerlink™
9222163
U8626025
9122083
U8800073
Pencil
Reflection Differential
500 kHz to 3 MHz
Unshielded
Powerlink™
9222430
U8629773
9122083
U8800073
Pencil
Reflection Differential
3 MHz to 6 MHz
Shielded
Powerlink™
9222432
U8614281
9122083
U8800073
Absolute Bridge
Absolute bridge type probes
Internal reference coils ensure the best match to the test coil when using a Triax (Fischer™*) or Powerlink™ connector.
Shielded coil for higher resolution.
Detect cracks in all directions.
Probe-type commonly used worldwide.
Cost-effective option.
Olympus absolute bridge type probes give a clean and strong signal as shown.
* All brands are trademarks or registered trademarks of their respective owners and third-party entities.
Type
Coil
Frequency
Shielding
Connector
Part ID
Item Number
Cable ID
Item Number
Pencil
Absolute Bridge
100 kHz to 500 kHz
Unshielded
Triax Fisher
9213402
U8623152
9122244
U8800091
Pencil
Absolute Bridge
500 kHz to 1 MHz
Unshielded
Triax Fisher
9213403
U8623153
9122244
U8800091
Pencil
Absolute Bridge
1 MHz to 2 MHz
Unshielded
Triax Fisher
9213404
U8623154
9122244
U8800091
Pencil
Absolute Bridge
2 MHz to 4 MHz
Unshielded
Triax Fisher
9213405
U8623155
9122244
U8800091
Pencil
Absolute Bridge
4 MHz to 6 MHz
Unshielded
Triax Fisher
9213406
U8623156
9122244
U8800091
Pencil
Absolute Bridge
100 kHz to 500 kHz
Shielded
Triax Fisher
9213408
U8623158
9122244
U8800091
Pencil
Absolute Bridge
1 MHz to 2 MHz
Shielded
Triax Fisher
9213409
U8623159
9122244
U8800091
Pencil
Absolute Bridge
2 MHz to 4 MHz
Shielded
Triax Fisher
9213410
U8623160
9122244
U8800091
Pencil
Absolute Bridge
4 MHz to 6 MHz
Shielded
Triax Fisher
9213411
U8623161
9122244
U8800091
Pencil
Absolute Bridge
500 kHz to 1 MHz
Shielded
Powerlink™
9222162
U8626024
9122083
U8800073
Pencil
Absolute Bridge
100 kHz to 500 kHz
Shielded
Powerlink™
9222180
U8626027
9122083
U8800073
Pencil
Absolute Bridge
1 MHz to 2 MHz
Shielded
Powerlink™
9222181
U8626028
9122083
U8800073
Pencil
Absolute Bridge
100 kHz to 500 kHz
Unshielded
Powerlink™
9222412
U8626110
9122083
U8800073
Pencil
Absolute Bridge
500 kHz to 1 MHz
Unshielded
Powerlink™
9222413
U8629440
9122083
U8800073
Pencil
Absolute Bridge
1 MHz to 2 MHz
Unshielded
Powerlink™
9222414
U8629139
9122083
U8800073
Pencil
Absolute Bridge
2 MHz to 4 MHz
Unshielded
Powerlink™
9222415
U8623305
9122083
U8800073
Pencil
Absolute Bridge
4 MHz to 6 MHz
Unshielded
Powerlink™
9222417
U8616124
9122083
U8800073
Pencil
Absolute Bridge
4 MHz to 6 MHz
Shielded
Powerlink™
9222418.00
U8626035
9122083
U8800073
Reflection Absolute
Reflection type probes
Also known as send-receive or driver-pickup probes
Provides a similar response to the absolute bridge probe.
Available with stacked or concentric driver and pickup coils.
Enables crack detection in all directions.
Withstand variations in temperature.
Operates over a wide frequency range.
Olympus reflection absolute type probes give a clean and strong signal as shown.
Type
Coil
Frequency
Shielding
Connector
Part ID
Item Number
Cable ID
Item Number
Pencil
Reflection Absolute
100 kHz to 1 MHz
Unshielded
Triax Fisher
9213417
U8623167
SPO-6687
U8800538
Pencil
Reflection Absolute
1 MHz to 3 MHz
Unshielded
Triax Fisher
9213418
U8623168
SPO-6687
U8800538
Pencil
Reflection Absolute
100 kHz to 1 MHz
Shielded
Triax Fisher
9213420
U8623170
SPO-6687
U8800538
Pencil
Reflection Absolute
1 MHz to 3 MHz
Shielded
Triax Fisher
9213421
U8623171
SPO-6687
U8800538
Pencil
Reflection Absolute
100 kHz to 1 MHz
Shielded
Powerlink™
9222188
U8626033
9122083
U8800073
Pencil
Reflection Absolute
100 kHz to 1 MHz
Unshielded
Powerlink™
9222421
U8629500
9122083
U8800073
Pencil
Reflection Absolute
1 MHz to 3 MHz
Shielded
Powerlink™
9222423
U8626037
9122083
U8800073
Bridge Differential
Bridge differential probe
Suitable for small defects, such as fatigue cracking.
Directional sensitivity.
Olympus bridge differential type probes give a clean and strong signal as shown.