DAKOTA ULTRASONICS MINI-MAX Ultrasonic Extensometer

• Size:
  Width (2.5in/63.5 mm)
  Height (6.5 in/165 mm)
  Depth (1.24 in/31.5 mm)
• Weight:
  13.5 ounces (with batteries).
• Keyboard:
  Membrane switch pad with
  twelve tactile keys.
• Operating Temperature:
  14 to 140F (-10C to 60C)
• Case:
  Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed).
• Environmental:  Meets IP65 requirements.

Connections

• USB:
  Direct USB-C 1.1 PC connectivity. Windows & OSX interface software.
• Line Power:
  USB-C to PC or AC adaptor.
• Temperature Sensor:
  5 pin Lemo 1.
• Transducer Connector:
  Lemo 00.

Memory

• Log Format:
  Grid (Alpha Numeric).
• Capacity:
  4GB internal SD memory.
• Screen Capture:
  Tagged interface file (.tif) capture for quick documentation.
• Custom Setups:
  64 user configurations.

Power Source

• Line Power:
  USB to PC or power outlet.
• Batteries:
  Alkaline 35 hrs, Nicad 10 hrs, NI-MH 35 hrs. Auto power off after 5 minutes idle. Battery status icon.

Transducers

• Transducer Types:
  Single element – 1 MHz to 10 MHz frequencies, and 1/8” to 1” diameters.
• Glue-On:
  Available for short bolts with minimal/short elongations to eliminate transducer placement errors.
• Connectors:
  Microdot, Lemo 00, or BNC options depending on the transducer model selected.
• Custom Trnasducers:
  Available for special applications.
• Temperature Probe:
  Automatic temperature compensation.

• Display:
  1/8in VGA grayscale display (240 x 160 pixels); viewable area 2.4 x 1.8in (62 x 45.7mm); EL backlit (on/off/auto invert).
• Screen Refresh Rate:
  30 Hz.
• Timing:
  Precision TCXO timing with single shot 100 MHz 8 bit ultra low power digitizer.
• Pulser Type:
  Square Wave.
• Pulser Voltage:
  Selectable 100, 150 and 200 volts.
• Pulse Width:
  Selectable options Spike, Thin, and Wide. 80 to 400 ns.
• Damping:
  50, 75, 100, 300, 600, & 1500 ohms.
• Frequency Band:
  Broadband 1.8 – 19 MHz (-3dB) filter.
• Horizontal Linearity:
  +/- 0.4% FSW.
• Vertical Linearity:
  +/- 1% FSH.
• Amplifier Linearity:
  +/- 1 dB.
• Amplitude Measurement:
  0 to 100% FSH, with 1% resolution.
• Delay:
  0 – 999.999 in (25,400 mm) at steel velocity.
• Measurement Gate:
  One gate with audible and visual alarm. Amplitude 5-95%, 1% steps.

Features

• Setups:
  64 custom user defined setups; factory setups can also be edited by the user.
• Auto Set:
  Automates the detection, scope, and display setting process for each individual bolt.
• Alarm Limits:
  Adjustable Hi/Low tolerances with visual LED’s and audible beeper.
• Field Calibration:
  Vector or Regression correction curve for increased accuracy using Load & Stress.

Display Views

• A-Scan:
  Rectified +/- (half wave view), or RF (full waveform view).
• Large Digits:
  Digital display only.
• Alarm Limits Bar:
  Hi & Lo alarm limits for displaying an acceptable tolerance range.

• Units:
  English (in), Metric (mm), or Time (μs). Farenheit or Centigrade.
• Velocity:
  0.0492 to .5510 in/μs (1250– 13995 m/s).
• Measurement Modes:
  Pulse-Echo (P-E).
• Measurement Range:
  1 to 999.999 in (2540 cm), dependent on material type and consistency.
• Detection:
  Zero Crossing.
• Resolution:
  +/- 0.00001 in (0.0001 mm).
• Calibration:
  Automatic, Fixed, Single or Two-Point zero calibration options.
• Quantities:
• Time – Nanoseconds.
• Elongation – Change in length (inches/millimeters).
• Load – Force load applied (pounds KIP, or megapascals MPa).
• Stress – Force for unit area stress applied (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:
  Bar graph indicates stability of measurement.

Certification

• Factory calibration traceable to NIST & MIL-STD-45662A.

Warranty

• 2 year limited