Dakota Probes for Precision Thickness Gauges

Dakota Probes for Precision Thickness Gauges

Find the Probe That's Right for You

 

Probes for Every Application

Dakota offers a wide variety of delay line, pencil and contact probes to work in combination with their PMX and PZX precision thickness gauges to meet your measuring needs. The following is a breakdown of the 3 types of single element probes and the applications they're typically used for.

Delay Line Probes

The 15MHz ¼” Delay Line probe is the most commonly used probe with a PZX1 or PMX instrument. When measuring in the E-E mode it can measure 0.006” to 0.400” in steel and aluminum.  Changing to I-E mode allows measurements to ~1.000”. In Plastics mode, measurements from 0.005” to 0.150”. Tapered delay lines are helpful for measuring on tubes and radiused corners. Graphite Delay lines can be helpful for measuring plastics that are similar in Impedance to Acrylic Delay Lines. You can learn more about Impedance in the section below.

Recommended Probes:

  • T-402-5507: 1/4", 15MHz, Microdot Connector, Standard
  • T-402-6507: 1/4", 20 MHz, Microdot Connector

For Best Results:

  • Remember to make sure that couplant such as mineral oil is used between the crystal and delay line.
  • For difficult applications try a high impedance couplant such as Echo 8 ZH  
  • Replace delay lines when they are chipped or worn.

A Note on Impedance:

Impedance is the product of a material's density and velocity. Air is very different from metals and plastics and therefore the sound beam will reflect at its interface. This is what makes thickness gauging possible. I-E measurements measure from the end of the Delay Line - if the Delay Line is acoustically similar to the test material, the Interface Echo will be weak or possibly disappear. This is sometimes an issue when measuring some types of plastics. The solution in that case is to use a Graphite Delay Line that has a dissimilar impedance.  

 

Delay Line Tips / Transducer Accessories

  • F-000-7102: 1/4"W x 3/8"L Acrylic Tip for Delay Line Probes
  • F-000-7103: 1/4"W x 1/2"L Acrylic Tip for Delay Line Probes
  • X-132-0000: 1/8" Cone Tip for Delay Line Probes
  • X-532-0000: 3/16" Cone Tip for Delay Line Probes
  • X-633-0000: 1/4" Graphite Tip for Delay Line Probes for Plastics
  • X-533-0000: 3/16" Graphite Cone Tip for Delay Line Probes
  • X-152-0000: 1/16"W x 0.45"L Acrylic Tip for Pencil Delay Line Probes
  • X-752-0000: 1/8"W x 0.45"L Acrylic Tip for Pencil Delay Line Probes

Pencil Transducers

For Use With PMX and Similar A-Scan Instruments

Pencil probes concentrate the sound beam to a 1/16” spot which is best for measurements on containers, small diameter tubes, turbine blades, etc.  Using a high impedance couplant makes coupling easier. Care must be exercised to place the probe perpendicular (90°) to the test surface.

 

Recommended Probes:

  • T-481-4507: 3/16" Diameter, 10 MHz, 1/16" Tip with Top Entry and Microdot Connector
  • T-681-4507: 3/16" Diameter, 10 MHz, 90° Right Angle with Side Entry and Microdot Connector
  • T-581-5507: 3/16" Diameter, 15 MHz, 1/16" Tip with Side Entry and Microdot Connector

 

Contact Transducers:

Contact Probes can be used with either the PMX1 or PMX instruments to extend the measuring range. They can be used in E-E, I-E, P-E, or E-EV modes as required. Cables are not included.

Recommended Probes:

  • T-4903-2875: 1/8" Diameter, 5MHz, Side Entry, Microdot Connector
  • T-5903-2875: 1/8" Diameter, 5 MHz, Top Entry, Microdot Connector
  • T-4903-4875: 1/8" Diameter, 10 MHz, Side Entry, Microdot Connector
  • T-5903-4875: 1/8" Diameter, 10 MHz, Top Entry, Microdot Connector
  • T-4023-1855: 1/4" Diameter, 2.25 MHz, Side Entry, Microdot Connector
  • T-5023-1855: 1/4" Diameter, 2.25 MHz, Top Entry, Microdot Connector
  • T-4023-2855: 1/4" Diameter, 5 MHz, Side Entry, Microdot Connector
  • T-5023-2855: 1/4" Diameter, 5 MHz, Top Entry, Microdot Connector
  • T-4023-4855: 1/4" Diameter, 10 MHZ, Side Entry, Microdot Connector
  • T-5023-4855: 1/4" Diameter, 10 MHz, Top Entry, Microdot Connector
  • T-4043-1855: 1/2" Diameter, 2.25 MHz, Side Entry, Microdot Connector
  • T-5043-1855: 1/2" Diameter, 2.25 MHz, Top Entry, Microdot Connector
  • T-4043-2855: 1/2" Diameter, 5 MHz, Side Entry, Microdot Connector
  • T-5043-2855: 1/2" Diameter, 5 MHz, Top Entry, Microdot Connector
Description Part # Saved Price Select Option Add to

Transducers
Dakota NDT Contact Transducers with Microdot Connectors, 1/2" Diameter, 5 MHz (specify top or side entry)
Model #
UT-DU-T-5043-2855-Master
$375.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/2" Diameter, 2.25 MHz (specify top or side entry)
Model #
UT-DU-T-5043-1855-Master
$375.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/4" Diameter, 10 MHz (specify top or side entry)
Model #
UT-DU-T-5023-4855-Master
$400.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/4" Diameter, 5 MHz (specify top or side entry)
Model #
UT-DU-T-5023-2855-Master
$375.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/4" Diameter, 2.25 MHz (specify top or side entry)
Model #
UT-DU-T-5023-1855-Master
$375.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/8" Diameter, 10 MHz (specify top or side entry)
Model #
UT-DU-T-5903-4875-Master
$465.00
Dakota NDT Contact Transducer with Microdot Connectors, 1/8" Diameter, 5 MHz (specify top or side entry)
Model #
UT-DU-T-5903-2875-Master
$435.00
Dakota NDT Pencil Transducer, 3/16" Diameter, 10 MHz, 90° Right Angle with Top Entry and Microdot Connector, T-681-4507 UT-DU-T-681-4507
$700.00
Dakota NDT Pencil Transducer, 3/16" Diameter, 10 MHz, 1/16" Tip with Top Entry and Microdot Connector, T-481-4507 UT-DU-T-481-4507
$700.00
Dakota NDT Pencil Transducer, 3/16" Diameter, 15 MHz, 1/16" Tip with Side Entry and Microdot Connector, T-581-5507 UT-DU-T-581-5507
$800.00
Dakota NDT, T-402-5507 Transducer - Single Element Delay Line Transducer, 15MHz x 1/4", Microdot-Side Connector (included with gauge unless specified otherwise) UT-DU-T-402-5507
$615.00
Dakota NDT Single Delay Line Probe, 20 MHz, 1/4", Microdot, Side Mounted, T-402-6507 UT-DU-T-402-6507
$615.00

Accessories
Dakota NDT Cone Tip For Delay Line Probes (specify diameter)
Model #
UT-DU-X-132-0000-Master
$20.00
Dakota NDT Acrylic Tip For Delay Line Probes, 1/4" Diameter (Previous PN X-231-0000 and X-241-0000). (Specify Length)
Model #
UT-DU-F-000-7102-Master
$20.00
Dakota NDT Graphite Tip For Delay Line Probe for Plastics, 1/4" Diameter UT-DU-X-633-0000
$50.00
Dakota NDT Graphite Cone Tip For Delay Line Probe, 3/16" Diameter, X-533-0000 UT-DU-X-533-0000
$55.00
Dakota NDT Acrylic Tip For Pencil Probe, 0.45"L (specify diameter)
Model #
UT-DU-X-752-0000-Master
$55.00