Dakota Ultrasonics Ultrasonic Speciality Thickness Gauges
F.A.Q.
Why do engine builders need a dedicated Sonic Tester instead of a standard flat-probe thickness gauge?
The inside of an engine cylinder bore is a concave curved surface, and cast-iron engine blocks have a coarse grain structure with internal water-jacket scale. Standard flat-faced transducers only make two-point edge contact inside a curved bore, causing unstable readings. The Dakota R9 (PR-9) and Dakota RX8-DL (PR-8V) pair a curved-surface cylinder probe with specialized gain and fast-scan algorithms so the operator can rock the probe slightly inside the bore to lock onto the true minimum wall thickness between the cylinder and the water jacket.
What is the difference between the Dakota R9 (PR-9) and the Dakota RX8-DL (PR-8V)?
- Dakota R9 (PR-9): A streamlined, non-logging digital sonic tester with preset velocities for cast iron, steel, and aluminum and a High-Speed Scan Mode—ideal for quick cylinder wall, deck height, and chassis tubing checks.
- Dakota RX8-DL (PR-8V): Adds a time-based B-Scan cross-sectional display, Low/Med/High adjustable gain, audible/visual Hi/Lo tolerance alarms, and a 12,000-reading Engine & Chassis Data Logger with Windows PC software to generate complete 8-, 10-, or 12-cylinder block maps for customer build sheets.
What is the difference between the Checkline TI-44NA and TI-45NA ultrasonic thickness gauges?
Both the TI-44NA and TI-45NA share the same 0.040" to 8.00" (1.0 to 200.0 mm) measuring range, 0.001" (0.01 mm) resolution, and 7 oz pocket-sized housing. The only difference is the transducer connection: on the TI-44NA, the 5 MHz probe is permanently hard-wired to the top of the gauge; on the TI-45NA, the probe connects via detachable top-mounted LEMO connectors for easy cable/transducer replacement.
Which discontinued Checkline specialty models have been replaced by newer gauges?
If you are replacing older discontinued Checkline gauges previously listed in this subcategory:
- The TI-25LT and TI-25P have been replaced by our TI-25MX and Dakota ZX Series.
- The TI-25DL has been replaced by our 10,000-reading USB-C data loggers, the Dakota ZX-5DL (Z-304-0001) and Dakota ZX-6DL (Z-306-0001).
Dakota Ultrasonics R9 (PR-9) Sonic Tester Thickness Gauge Z-309-0001 / Z-309-000...
$1,639.00
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- Dakota Ultrasonics R9 (PR-9) Sonic Tester Thickness Gauge Z-309-0001 / Z-309-0002 is a dedicated design for the racing industry
- Factory calibration traceable to NIST & MIL-STD-45662A.
- Range: Measures from 0.025 to 36.00 inches (0.63 to 914.4 millimeters). Range dependent on material and transducer type.
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Dakota Ultrasonics RX8-DL (PR-8V) Z-158-0003 / Z-158-0004 Sonic Tester - Audio G...
$2,473.00
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- Thickness Gauge for engine builders and race shops
- Measures cylinder wall thickness, deck height, chassis tubing & more
- All the features of the PR-8V with a time based B-Scan that will graphically draw the blind of a cylinder wall to show corrosion
- Data Logger - Stores 12,000 readings and B-Scans.
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Dakota Ultrasonics PMX2-DL (PVX) Precision Ultrasonic A-scan Thickness Gauge Z-1...
$3,525.00 - $3,695.00
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Dakota Ultrasonics PMX2-DL (PVX) Precision Ultrasonic A-scan Thickness Gauge Z-157-0004 / Z-157-0006 ideal for applications with minimum access or contact areas. Enhanced graphic scope Displays A Scan & B Scan for a cross section view
Resolution: 0.0001" (0.001 mm)
Datalogging: YES
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Dakota Ultrasonics VX Ultrasonic Velocity Gauge
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