Dakota Ultrasonics PR-82 Sonic Tester

See More Sonic Testers

Dakota Ultrasonics PR-82 Sonic Tester

See More Sonic Testers
This product has been discontinued

Product Description
This product has been replaced by the PR-9 Ultrasonic
The PR-82 has been replaced by the Dakota Ultrasonics PR-9 sonic tester
Fast-Scan Mode: Takes 32 readings per second and displays the minimum reading found when the transducer is removed.
Measures cylinder wall thickness, deck height, chassis tubing & more
Manufacturer: Dakota Ultrasonics
Warranty: Five Year Limited

Range in Steel: 0.63 to 199.99 mm / 0.040 to 1.50 in


  • Four readings per second for single point measurements or 16 per second in SCAN mode.


Range Measures from 0.040 to 1.50 inches (0.63 to 199.99 millimeters) in casted materials 
Resolution .001 inches (0.01mm) 
Velocity Range .0492 to .3936 in./ms
1250 to 9999 meters/sec 
Units English & Metric 
Transducer Types Dual Element (1 to 10 MHz). 
Power Source Two 1.5V alkaline or 1.2V NiCad AA cells.
Battery Life Typically operates for 200 hours on alkaline and 130 hours on NiCad.  
Auto Power off if idle 5 min 
Display Multi-function 4.5 digit liquid crystal display with 0.500 inch numerals, backlit for use in poor light conditions 
Keyboard Sealed membrane that is resistant to both water and petroleum products. 
Case Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed). 
Operating Temperature -20 to 120F (-20 to 50C)  
Weigth, net 10 ounces 
Dimensions 2.5 W x 4.5 H x 1.24 D inches 
Warranty 5 year limited 
Certification CE Approved, Factory calibration traceable to national standards 


  • Cylinder's & Pitting
  • Head Ports & Pipe
  • Roll Cages
  • Body Panels
  • Chasis
  • Variety of Applications

The PR-82 is the first affordable Sonic Tester, utilizing state-of-the-art digital technology to produce fast and accurate readings. It requires no special training to operate.

Unlike calipers, the PR-82 will measure where there is access to only one side. This makes it valuable when measuring roll cage thickness, cylinder walls (before and after boring) and heads during porting.

The PR-82 measures in two modes. The first mode takes a measurement at the point you place the probe. The second is the Scan mode, which is helpful when measuring cylinder walls and roll cages. Place the probe at the bottom of the cylinder and drag it to the top, the gauge will display the thinnest reading measured.

The PR-82 is a lightweight, rugged tool that is resistant to water and oil. Other features include a backlit LCD and a bar graph to indicate signal stability. The 5 year warranty indicates how we feel about the quality of the PR-82. The PR-82 can go where you go, to do the work you do, saving you time and money, making fast, accurate measurements.

Transducer and Probe Information

For Engine Blocks (Cylinders & Decks)
One probe is usually good for use on both Cast Aluminum and Cast Iron Engine Blocks. The 2 inch radius allows the probe to measure the concave surface inside cylinders. The radius is gentle enough that the same probe can also be used to measure on the flat surfaces "decks" on the block. This one probe will work for over 90% of Cast Aluminum or Cast Iron Blocks.

> 0.500"/5MHz with 2 inch radius

++ In instances where the above probe does not work, or if the block is made from a very old Aluminum Cast Aluminum, then the alternate probe would be T-10404120 (0.500"/10MHz), also with a 2 inch radius.

For Heads (Ports)
Probe selection depends upon type of material; cast iron or cast aluminum. This probe has a 0.55" radius and is supplied with either a 1 inch wand or 9 inch wand, depending upon user preference.

Cast Iron
> 0.250"/5MHz with 0.55" Radius
with 1 inch wand T-162-2110
with 9 inch wand T-132-2110

Cast Aluminum
> 0.250/10MHz with 0.55" Radius
with 1 inch wand T-162-4110
with 9 inch wand T-132-4110

For Chassis Tubing
This would be used by chassis builders as well as sanctioning bodies (i.e. NHRA, ARCA, etc.). One probe is normally suitable for any application, assuming they do not want "thru-paint" capability.

> 3/16"-10MHz flat bottom (no radius)

For "thru-paint" capability, when measuring chassis tubing for use with the PR8V

>0.250/5MHz Hi-Damp for use in MMX Mode