Dakota NDT BT2-DL Benchtop Bolt Tension Monitor

The Dakota NDT BT2-DL benchtop bolt tension monitor accurately measures elongation allowing the gauges to accurately measure time (nanoseconds), elongation, load, stress, and %strain of a bolt. When nuts and bolts are fastened together under load, the action of tightening the nut increases the force applied to the bolt causing elongation.

By using ultrasonics, the BT2-DL bolt tension monitor is not affected by temperature, friction, or resistance factors affecting the accuracy of standard torque measurement techniques, allowing an accuracy within 0.00001 inch (0.0001 mm).

The gauge can be programmed to automatically stop the tightening process when the appropriate load has been applied by using the gauge’s USB interface together with the optional shut off accessory.

Features

• Measurement modes: Pulse-Echo (P-E), Echo-Echo (E-E), Echo-Echo-Echo (E-EV)
• Measurement range: 1 to 999in (25.4mm to 2,540cm) in pulse-echo (P-E) measurement mode
• Velocity calibration range: 0.0492 to 0.5510 in/μs (1250 to 13,995m/s)
• Detection: zero crossing
• Resolution: +/- 0.00001in (+/- 0.0001mm)
• Calibration: automatic, fixed, single, or two-point zero calibration options
• Quantities:
  • Time: nanoseconds
  • Elongation: change in length in inches/millimeters
  • Load: force load applied in pounds KIP or megapascals MPa
  • Stress: force for unit area stress applied in inches per inch or millimeters per millimeter
  • %Strain: ratio of elongation to effective length
  • Bolt Materials: select types from a preset or custom list
  • Repeatability Bar Graph: indicates stability of measurement
• Display views:
  • RF (full wave)
  • +/-Rectified (half wave)
  • Digits
  • Split Screen (wave plus large digits)
• Transducer connectors: Two LEMO 00
• Automatic, fixed, single, and two-point calibration options
• 64 custom user-defined setups
• Auto Set feature automates the detection, scope, and display setting process for each individual bolt
• 4Gb internal memory, up to 64Gb external memory
• Blanview sunlight-readable QVGA TFT color display
• 60Hz screen refresh rate
• Direct USB-C 1.1 PC connectivity
• Meets IP65 requirements