DAKOTA NDT BT1-DL Bolt Tension Monitor

Dakota NDT BT1-DL (MiniMax) [Z-156-0008] Handheld Bolt Tension Monitor. The Dakota Ultrasonics BT1-DL (TI-MINIMAX) Bolt Tension Monitor Meter Z-182-0002 / Z-156-0008 Extensometer, is a state of the art instrument designed to measure elongation produced by tightening a threaded fastener. The Dakota Ultrasonics BT1-DL (TI-MINIMAX) Bolt Tension Monitor Meter Z-182-0002 / Z-156-0008 Extensometer can measure the elongation very accurately in fasteners of virtually any material from 1/2 inch to 4 feet in length. The measurement is achieved by determining the change in the transit time of an ultrasonic shock wave along the length of the fastener as the fastener is tightened by any method. The on-board microcomputer automatically interprets this time measurement to display the time(nanoseconds), elongation, load, stress, or %strain from stretching a fastener.

Specification:
Measuring Range: From 1" to 48" (25.4mm to 122cm) bolts
Time: Nanoseconds
Elongation: Change in length (inches/millimeters)
Load: Force load applied (pounds kIP or kN Killonewtons)
Stress: Force for unit area stress applied (pounds kPSI or megapascals MPa)
Strain %: percentage strain applied (inches per inch or millimeters per millimeter)
Resolution: +/- .00001 inches (0.0001 mm)
Velocity Range: .0492 to .3936 in/ms (1250 to 9999 meters/sec)
Calibration: Fixed, Single, and Two point zero calibration options. Select bolt material types from a preset or custom list.
Units: English & Metric - Fahrenheit & Centigrade. 
Measuring Modes: Pulse-Echo (standard); Pulse-Echo w/Gate (fine adjust)
Pulser: Square wave pulser with adjustable pulse width (spike, thin, wide)
Receiver: Manual or Auto Set gain control with 40dB range
Timing: 10 bit 250 MHz digitizer
Display Modes: A-Scan - Rectified +/- (half wave view), or RF (full waveform view)
Alarm Limits: Set hi and lo tolerances with audible beeper, viewable scan bar, and visual LEDs
Data Logger (Internal): Total of 8,000 readings, multiple bolt groups. Stores both waveform views, nanoseconds, elongation, load, stress, and strain for each reading
Memory: 16 megabit non-volatile ram
Transducer: Single Element (1 to 10 MHz & 1/8" to 1" diameters)
Transducer Cable Lenght: 10 foot (custom lengths available, inquire)
Temperature Probe: for automatic temperature compensation
Setup Memory: 64 custom user defined setups. Factory setups can also be edited by the user
Gate: Gate used to fine adjust where the detection point occurs
Auto Set: Locates the detection signal, optimizes the gain setting, and adjusts the overall display to show the waveform and detection point automatically
Field Calibration: Vector & linear regression. Includes Factory calibration traceable to national standards
Power: Three 1.5V alkaline or 1.2V NiCad AA cells. Typically operates for 150 hours on alkaline and 100 hours on NiCad (charger not included.)
Dimensions: 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)
Operating Temperature: 14 to 140F (-10C to 60C)

Include:
(1) BT1-DL (TI-MINIMAX) - Bolt Tension Monitor Meter
(1) 4 oz. Bottle of Couplant
(1) RS232 Transfer Cable
(1) Lemo to DB9 M/F 10' Lemo to Microdot Transducer Cable
(1) Windows Utility Software
(2) AA batteries
(1) Operation Manual
(1) Carrying Case
NOTE: Transducer Sold separately