United NDT offers more than 200 different PA probes. All these probes are available in different cable length, different cable type and with different connectors.Besides that we offer the service of manufacturing PA probes according to your requirement or according to your specification. Please get in touch with us if you want more information about custom made PA probes.
RESELLERS, DISTRIBUTORS AND SALES AGENTS - PLEASE ASK FOR RESELLER DISCOUNTS/COMMISSIONS AND TERMS AND CONDITION !

Click on one of the tabs below to view a list of the Linear PA Probes, Dual Matrix PA Probes or Special PA Probes
United NDT offers several type of Linear PA Probes as under:
(see also under Special PA Probes)
- Standard Universal PA probes
- Small footprint Linear PA Probes
- Deep penetration Linear PA Probes
- Near Wall Linear PA Probes
- Immersion Type Linear PA Probes
- Linear PA Probes with integrated wedge
We provide all probes with the connector, cable type and cable length of your choice. Means: You can select your probe according to the specification and choose the connection type, the cable type and/or cable length.
We keep a huge stock of PA probes. Most of the standard PA probes are on stock. If a probes is not on stock, usual delivery time is 3 to 4 weeks.
How to define and choose your probe?
It is rather simple! Just focus on the frequency, number of elements, pitch and elevation and, if at all important, on the housing type. See the example below:
___________________________________________________________________________
Standard Universal Linear PA Probes
The list below shows all the Standard Linear PA Probes currently available. There are some more linear probes under Special PA probe.
The second column includes the details about the cable used (110 Ohm or 50 Ohm) and the standard cable length (e.g. 2.0 m).
Other cable length and other cables (e.g. high duty cables with special protection) are also available on request.
When ordering you can specify cable length, cable type and the type of connector. If you don't know the connector type you may just specify the instrument you are using.
CLICK ON THE RESPECTIVE PA PROBE IN THE LIST TO RECEIVE MORE INFORMATION AND TO ORDER!
1. Standard Universal PA probes
Applications:
- angle beaming with shear or longitudinal waves (depends on wedge)
- inspection of: welds, pipes, castings, forgings, machined components (manual and automated)
- detection of flaw and sizing
Features:
- delay line and wedge concept for maximum flexibility due to versatility
- high measuring range
Probe ID | Short Description |
1L16-1.0*10-B10-E | DP PA Linear Array 1L16-1.0*10-B10-E |
1L16-1.8*22-B30-E | DP PA Linear Array 1L16-1.8*22-B30-E |
1L64-1.0*10-B59-E | DP PA Linear Array 1L64-1.0*10-B59-E |
1L64-2.0*20-D72-E | DP PA Linear Array 1L64-2.0*20-D72-E |
2.2L16-0.6*10-D1-E | DP PA Linear Array 2.2L16-0.6*10-D1-E |
2.2L48-0.8*10-B57-E | DP PA Linear Array 2.2L48-0.8*10-B57-E |
2.25L64-0.6*10-D3-E | DP PA Linear Array 2.25L64-0.6*10-D3-E |
2.2L128-0.8*10-D7-E | DP PA Linear Array 2.2L128-0.8*10-D7-E |
2.25L32-1.0*20-D6-E | DP PA Linear Array 2.25L32-1.0*20-D6-E |
2.25L64-0.6*10-B57-E | DP PA Linear Array 2.25L64-0.6*10-B57-E |
2.25L64-0.75*10-B6-E | DP PA Linear Array 2.25L64-0.75*10-B6-E |
2.25L64-0.75*10-B44-E | DP PA Linear Array 2.25L64-0.75*10-B44-E |
2.5L16-1.0*12-B10-E | DP PA Linear Array 2.5L16-1.0*12-B10-E |
2.5L16-1.0*10-D64-E | DP PA Linear Array 2.5L16-1.0*10-D64-E |
2.5L32-0.5*10-B10-E | DP PA Linear Array 2.5L32-0.5*10-B10-E |
2.5L64-0.6*10-B7-E | DP PA Linear Array 2.5L64-0.6*10-B7-E |
2.5L64-1.0×7-D66-E | DP PA Linear Array 2.5L64-1.0×7-D66-E |
2.5L64-1.0*10-B93-E | DP PA Linear Array 2.5L64-1.0*10-B93-E |
3.5L16-0.6*10-D1-E | DP PA Linear Array 3.5L16-0.6*10-D1-E |
3.5L64-0.6*10-D3-E | DP PA Linear Array 3.5L64-0.6*10-D3-E |
3.5L64-1.0×7-D66-E | DP PA Linear Array 3.5L64-1.0×7-D66-E |
3.5L128-0.5*10-B9110-E | DP PA Linear Array 3.5L128-0.5*10-B9110-E |
3.5L128-0.5*10-D7-E | DP PA Linear Array 3.5L128-0.5*10-D7-E |
3.5L128-0.8*10-D7-E | DP PA Linear Array 3.5L128-0.8*10-D7-E |
4L16-0.5*9-B12-E | DP PA Linear Array 4L16-0.5*9-B12-E |
4L16-1.0*10-B10-E | DP PA Linear Array 4L16-1.0*10-B10-E |
4L16-1.2*12-D76-E | DP PA Linear Array 4L16-1.2*12-D76-E |
4L32-0.5*10-D2-E | DP PA Linear Array 4L32-0.5*10-D2-E |
4L32-0.5*10-B10-E | DP PA Linear Array 4L32-0.5*10-B10-E |
5L16-0.5*10-B12-E | DP PA Linear Array 5L16-0.5*10-B12-E |
5L16-0.6*10-B12-E | DP PA Linear Array 5L16-0.6*10-B12-E |
5L16-0.6*10-B49-E | DP PA Linear Array 5L16-0.6*10-B49-E |
5L16-0.6*10-B56-E | DP PA Linear Array 5L16-0.6*10-B56-E |
5L16-0.6*10-D1-E | DP PA Linear Array 5L16-0.6*10-D1-E |
5L16-1.0*10-B10-E | DP PA Linear Array 5L16-1.0*10-B10-E |
5L16-1.2*12-D76-E | DP PA Linear Array 5L16-1.2*12-D76-E |
5L32-0.5*10-D2-E | DP PA Linear Array 5L32-0.5*10-D2-E |
5L32-0.5*10-B10-E | DP PA Linear Array 5L32-0.5*10-B10-E |
5L32-0.6*10-B72-E | DP PA Linear Array 5L32-0.6*10-B72-E |
5L32-0.6*15-D63-50-E | DP PA Linear Array 5L32-0.6*15-D63-50-E |
5L32-0.8*12-B40-E | DP PA Linear Array 5L32-0.8*12-B40-E |
5L32-1.0*6-D3-E | DP PA Linear Array 5L32-1.0*6-D3-E |
5L32-1.0*10-D57-E | DP PA Linear Array 5L32-1.0*10-D57-E |
5L32-2.0*6-B26-E | DP PA Linear Array 5L32-2.0*6-B26-E |
5L64-0.3*7-B22-E | DP PA Linear Array 5L64-0.3*7-B22-E |
5L64-0.6*10-B7-E | DP PA Linear Array 5L64-0.6*10-B7-E |
5L64-0.6*10-B57-E | DP PA Linear Array 5L64-0.6*10-B57-E |
5L64-0.6*10-D3-E | DP PA Linear Array 5L64-0.6*10-D3-E |
5L64-0.8*10-B6-E | DP PA Linear Array 5L64-0.8*10-B6-E |
5L64-0.8*10-B44-E | DP PA Linear Array 5L64-0.8*10-B44-E |
5L64-1.0*10-B26-E | DP PA Linear Array 5L64-1.0*10-B26-E |
5L64-1.0*15-D14-E | DP PA Linear Array 5L64-1.0*15-D14-E |
5L64-1.8*10-D27-E | DP PA Linear Array 5L64-1.8*10-D27-E |
5L128-0.8*10-D7-E | DP PA Linear Array 5L128-0.8*10-D7-E |
5L128-1.0*10-D27-E | DP PA Linear Array 5L128-1.0*10-D27-E |
5L128-1.0*10-E38-E | DP PA Linear Array 5L128-1.0*10-E38-E |
5L128-1.0*15-D13-E | DP PA Linear Array 5L128-1.0*15-D13-E |
5L128-1.8*6-B80-E | DP PA Linear Array 5L128-1.8*6-B80-E |
7.5L64-1.0*7-D66-E | DP PA Linear Array 7.5L64-1.0*7-D66-E |
7.5L16-0.5*10-B12-E | DP PA Linear Array 7.5L16-0.5*10-B12-E |
7.5L16-0.6*10-B12-E | DP PA Linear Array 7.5L16-0.6*10-B12-E |
7.5L16-0.6*10-B56-E | DP PA Linear Array 7.5L16-0.6*10-B56-E |
7.5L16-0.6*10-D1-E | DP PA Linear Array 7.5L16-0.6*10-D1-E |
7.5L32-0.3*10-B56-E | DP PA Linear Array 7.5L32-0.3*10-B56-E |
7.5L32-0.3*10-D1-E | DP PA Linear Array 7.5L32-0.3*10-D1-E |
7.5L32-0.5*10-B10-E | DP PA Linear Array 7.5L32-0.5*10-B10-E |
7.5L32-0.5*10-D2-E | DP PA Linear Array 7.5L32-0.5*10-D2-E |
7.5L32-1.0*10-D57-E | DP PA Linear Array 7.5L32-1.0*10-D57-E |
7.5L60-1.0*10-B23-E | DP PA Linear Array 7.5L60-1.0*10-B23-E |
7.5L64-0.6*10-E3-E | DP PA Linear Array 7.5L64-0.6*10-E3-E |
7.5L64-0.8*10-B6-E | DP PA Linear Array 7.5L64-0.8*10-B6-E |
7.5L128-0.8*10-B60-E | DP PA Linear Array 7.5L128-0.8*10-B60-E |
7.5L128-0.8*10-D7-E | DP PA Linear Array 7.5L128-0.8*10-D7-E |
10L16-0.6*7-B12-E | DP PA Linear Array 10L16-0.6*7-B12-E |
10L16-1.0*10-B10-E | DP PA Linear Array 10L16-1.0*10-B10-E |
10L32-0.31*10-B12-E | DP PA Linear Array 10L32-0.31*10-B12-E |
10L32-0.5*7-D2-E | DP PA Linear Array 10L32-0.5*7-D2-E |
10L64-0.6*7-D3-E | DP PA Linear Array 10L64-0.6*7-D3-E |
10L64-0.6*10-B57-E | DP PA Linear Array 10L64-0.6*10-B57-E |
10L128-0.8*10-B60-E | DP PA Linear Array 10L128-0.8*10-B60-E |
10C128-0.8*10-E34-E | DP PA Linear Array 10C128-0.8*10-E34-E |
10C128-0.8*10-D35-E | DP PA Linear Array 10C128-0.8*10-D35-E |
10L128-0.8*10-D7-E | DP PA Linear Array 10L128-0.8*10-D7-E |
2. Small footprint Linear PA Probes
Applications:
- inspection of small test objects or pieces with limited areas of access
- special application (aerospace): detection of scribe marks through coating
Features:
- different designs for different applications
- special delay lines and wedges
Probe ID | Short Description DP PA small Foot-Print Linear Array 5L10-0.5*5-B1-E |
5L10-0.5*5-B54-E | DP PA small Foot-Print Linear Array 5L10-0.5*5-B54-E |
5L10-0.5*6-B54-E | DP PA small Foot-Print Linear Array 5L10-0.5*6-B54-E |
7.5L8-0.5*5-B1-E | DP PA small Foot-Print Linear Array 7.5L8-0.5*5-B1-E |
7.5L8-0.5*5-B54-E | DP PA small Foot-Print Linear Array 7.5L8-0.5*5-B54-E |
10L16-0.3*5-B1-E | DP PA small Foot-Print Linear Array 10L16-0.3*5-B1-E |
10L16-0.3*5-B55-E | DP PA small Foot-Print Linear Array 10L16-0.3*5-B55-E |
10L24-0.2*4-B78-E | DP PA small Foot-Print Linear Array 10L24-0.2*4-B78-E |
3. Deep penetration Linear PA Probes
Applications:
- inspection of thick parts (also in "noisy" material)
- straight and angle beam for shear or longitudinal waves (depends of delay line)
- inspection of: welds, pipes, castings, forgings, machined components (manual and automated)
- detection and flaw sizing
Features:
- delay line and wedge concept for maximum flexibility due to versatility
- high depth range of measurement
Probe ID | Short Description |
1.5L32-1.0*20-D6-E | DP PA deep penetration Linear Array 1.5L32-1.0*20-E6-E |
2L16-1.8*20-B30-E | DP PA deep penetration Linear Array 2L16-1.8*20-B30-E |
2L16-3.5*20-B25-E | DP PA deep penetration Linear Array 2L16-3.5*20-B25-E |
2L32-1.4*18-B28-E | DP PA deep penetration Linear Array 2L32-1.4*18-B28-E |
2.2L16-1.6*16-B58-E | DP PA deep penetration Linear Array 2.2L16-1.6*16-B58-E |
2.25L64-2.0*20-D72-E | DP PA deep penetration Linear Array 2.25L64-2.0*20-E72-E |
3.5L16-1.6*16-B5-E | DP PA deep penetration Linear Array 3.5L16-1.6*16-B5-E |
3.5L16-1.6*16-B58-E | DP PA deep penetration Linear Array 3.5L16-1.6*16-B58-E |
3.5L32-0.6*15-D63-E | DP PA deep penetration Linear Array 3.5L32-0.6*15-E63-E |
5L32-0.6*15-B10-E | DP PA deep penetration Linear Array 5L32-0.6*15-B10-E |
5L32-0.6*15-E63-E | DP PA deep penetration Linear Array 5L32-0.6*15-E63-E |
4. Near Wall Linear PA Probes
Applications:
- typical used for C-Scan inspection of corroded parts and composites (delamination, disbonding and porosity checking)
Features:
- build with small dead zone at front and rear side of the probe
- particularly suitable for corrosion mapping and composites
Probe ID | Short Description |
5L64-1.0*7-B6-E | DP PA ´near Wall´ Linear Array 5L64-1.0*7-B6-E |
10L64-0.3*5-B8-E | DP PA ´near Wall´ Linear Array 10L64-0.3*5-B8-E |
5. Immersion Type PA Probes
Applications:
- for immersion inspection
- automated scanning of thin material (e.g. tubes, pipes, plates and the like)
- inspection of composites (delamination, debonding and the like)
- inline inspection (thickness gaging and flaw detection)
Features:
- different designs for different applications
- high accuracy
- ideal for automated scanning
Probe ID | Short Description |
5L64-1.0*10-B9IM-E | DP PA ´Immersion´ Linear Array 5L64-1.0*10-B9IM-E |
7.5L128-0.5*10-B9IM-E | DP PA ´Immersion´ Linear Array 3.5L128-0.5*10-B9IM-E |
5L128-0.75*10-D7IM-E | DP PA ´Immersion´ Linear Array 5L128-0.75*10-D7IM-E |
5L128-0.8*10-B60IM-E | DP PA ´Immersion´ Linear Array 5L128-0.8*10-B60IM-E |
5L128-0.8*12-B60IM-E | DP PA ´Immersion´ Linear Array 5L128-0.8*12-B60IM-E |
6. Linear PA Probes with integrated wedge
Applications:
- for manual inspection
- flaw detection and sizing
- inspection of small test pieces, or pieces with limited areas of access
Features:
- probe and wedge in one case
- user friendly
- compact size
Probe ID | Short Description |
2L8-1.0*9-A35-E | DP PA ´integrated wedge` Linear Array 2L8-1.0*9-A35-E |
4L16-0.5*9-A35-E | DP PA ´integrated wedge` Linear Array 4L16-0.5*9-A35-E |
4L16-0.5*10-A35-E | DP PA ´integrated wedge` Linear Array 4L16-0.5*10-A35-E |
5L128-0.6*4-E45-E | DP PA ´integrated wedge` Linear Array 5L128-0.6*4-E45-E |
United NDT also offers several types of Dual Matrix Array Probes as below:
1.5D and 2D PA Probes
We provide all probes with the connector, cable type and cable length of your choice. Means: You can select your probe according to the specification and choose the connection type, the cable type and/or cable length.
We keep a huge stock of PA probes. Most of the standard PA probes are on stock. If a probe is not on stock, usual delivery time is 3 to 4 weeks.
How to define and choose your Matrix probe?
It is rather simple! Just focus on the frequency, number of elements, pitch and elevation and, if at all important, on the housing type. See the example below:
The list below shows the Matrix PA Probes currently available.
The second column includes the details about the cable used (110 Ohm or 50 Ohm) and the standard cable length (e.g. 2.0 m).
Other cable length and other cables (e.g. high duty cables with special protection) are also available on request.
When ordering you can specify cable length, cable type and the type of connector. In case you don't know the connector type, let us know the instrument you are working with.
Suitable for inspections on coarse grain and granular material with transmission and receiving longitudinal waves.
Deep penetration in CRM (corrosion resistent materials) such as stainless steel, austenitic, other corrosion-resistant alloys, dissimilar welds. Also suited for cladded pipes.
These probes have excellent signal-to-noise ratio for the materials as described above.
CLICK ON THE RESPECTIVE PA PROBE IN THE LIST TO RECEIVE MORE INFORMATION ABOUT THE PARTICLUAR PROBE
1. Matrix Array Probes
Applications:
- weld inspection
- flaw detection and sizing
Features:
- axial focussing and steering in 2 directions
Probe ID | Short Description |
1M8*8-1.5*1.5-B19-E | DP PA Matrix Array 1M8*8-1.5*1.5-B19-E |
1.5M5*3-3.5*3-B21-E | DP PA Matrix Array 1.5M5*3-3.5*3-B21-E |
5M8*8-1.0*1.0-B15-E | DP PA Matrix Array 5M8*8-1.0*1.0-B15-E |
5M8*8-1.5*1.5-B19-E | DP PA Matrix Array 5M8*8-1.5*1.5-B19-E |
5M16*16-1.0*1.0-B16-E | DP PA Matrix Array 5M16*16-1.0*1.0-B16-E |
10M4*4-2.0*2.0-B15-E | DP PA Matrix Array 10M4*4-2.0*2.0-B15-E |
10M8*8-0.6*0.6-B13-E | DP PA Matrix Array 10M8*8-0.6*0.6-B13-E |
15M20*3-0.8*1.2-B68-E | DP PA Matrix Array 15M20*3-0.8*1.2-B68-E |
2. Dual Matrix Array Probes
Applications:
- austenitic material / stainless steel inspection
- cladded pipes
- welding inspection of steel/ stainless steel welds
- flaw detection and sizing
Features:
- capable to transmit longitudinal waves into austenitic material
- two matrix probes in separate housing placed on one special wedge
2.25DM7*4-2.71*3.0-G19-E | DP PA dual Matrix Array 2.25DM7*4-2.71*3.0-G19-E |
4DM16*2-1.0*3.0-E73-E | DP PA dual Matrix Array 4DM16*2-1.0*3.0-E73-E |
Besides the Linear PA Probes and DUAL Matrix Probes United NDT offers also special made/custom made probes and other probes as listed below:
- Laterally Focused Linear PA Probes
- Concave PA Probes
- Flexible Array Probes
- Wheel PA Probes
We provide all probes with the connector, cable type and cable length of your choice. Means: You can select your probe according to the specification and choose the connection type, the cable type and/or cable length.
We keep a huge stock of PA probes. Most of the standard PA probes are on stock. If a probes is not on stock, usual delivery time is 3 to 4 weeks.
How to define and choose your probe?
It is rather simple! Just focus on the frequency, number of elements, pitch and elevation and, if at all important, on the housing type. See the example below:
Laterally focused, Concave, Flexible and Wheel PA Probes
The list below shows the respective special PA Probes currently available.
When ordering you can specify cable length, type of cable and the type of connector or the instrument you want to connect the probes to.
CLICK ON THE RESPECIVE PA PROBE IN THE LIST TO RECEIVE MORE INFORMATION ABOUT THE PARTICLUAR PROBE
1. Laterally Focused Linear Probes
Probe ID | Short Description |
2.5S16-0.5*10-E94-E | DP PA ´laterally focussed` Linear Array 2.5S16-0.5*10-E94-E |
4S16-0.5*10-E10-E | DP PA ´lateral fokussiert` Linear Array 4S16-0.5*10-E10-E |
15S128-0.3*10-E23-E | DP PA ´lateral fokussiert` Linear Array 15S128-0.3*10-E23-E |
2. Concave PA Probes
Applications:
- automated scanning, testing machines, manual scanning, immersion technique
- flaw detection and sizing
- Inspection of composites (delamination, debonding and the like)
Features:
- focusing in curved materials
- waterproof
- reduction of complicated mechanics
Probe ID | Short Description |
3.5C96-0.6*12-R22.9-E | DP PA concav 3.5C96-0.6*12-R22.9-E |
3.5C128-0.625*13-R32-E | DP PA concav 3.5C128-0.625*13-R32-E |
4C64-1.0*10-R50-E | DP PA concav 4C64-1.0*10-R50-E |
7.5C128-0.5*10-R29-E | DP PA concav 7.5C128-0.5*10-R29-E |
10C64-1.0*10-R29-E | DP PA concav 10C64-1.0*10-R29-E |
3. Flexible Array Probes
Applications:
- manual inspection of curved or wavy surfaces
- flaw detection and sizing
Features:
- good focusing in curved pieces
- waterproof
- enabled testing of complicated geometries
Probe ID | Short Description |
5S32-0.5*10-S1-E | DP PA flexable Linear Array 5S32-0.5*10-S1-E |
5S64-1.0*10-S2-E | DP PA flexable Linear Array 5S64-1.0*10-S2-E |
7.5S32-0.5*10-S1-E | DP PA flexable Linear Array 7.5S32-0.5*10-S1-E |
7.5S32-1.0*10-S1-E | DP PA flexable Linear Array 7.5S32-1.0*10-S1-E |
7.5S64-0.5*10-S1-E | DP PA flexable Linear Array 7.5S64-0.5*10-S1-E |
5S24-1.0*10-S1-E | DP PA flexable Linear Array 5S24-1.0*10-S1-E |
4. Wheel PA Probes
Applications:
- manual scanning with integrated encoder
- corrosion mapping (C-Scan), flaw detection and sizing
- scanning of composites
- for flat plates, curved surfaces and also big diameter pipes
Features:
- efficient testing
- little couplant necessary, because of silicon rubber wheel probe
Probe ID | Short Description |
5L64-0.8*6.4-B18-E | DP PA Wheel PA Probe 5L64-0.8*6.4-B18-E |
5L128-0.8*6.4-B60-E | DP PA Wheel PA Probe 5L128-0.8*6.4-B60-E |
2L64-1.5*12-B96-E | DP PA Wheel PA Probe 2L64-1.5*12-B96-E |
1L50-2.0*16-B97-E | DP PA Wheel PA Probe 1L50-2.0*16-B97-E |
















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