NTS - Products

As design engineers push the envelope to provide greater strength and efficiency in bolted joints, the use of torque, torque and angle, or even tensioning as a method of tension control may not be adequate, leading to costly failures.  In those applications, ultrasonic bolt elongation/load measurement is able to provide accuracy equal to strain gauging without the need to strain gauge a bolt.

Boltstress G5 Monitor
Z-180-0001 G5 Ultrasonic Bolt Stress Monitoring Kit

The Boltstress G5 Monitor is very simple to use.  It is also a much lighter instrument than many competing products.  The Boltstress G5 has the functions to complete 90% of common tasks required.  The key limitation is that it can only measure bolts up to 2.5 metres in length.

Technical Specifications

  • Measurement quantities – Elongation, Load, Stress, Strain and Time
  • Display options – RF, Rectified, Large Digits with Limits Bar
  • Display Resolution – 1/8″ VGA 240 x 160 pixels
  • Stores 8000 readings and waveforms in multiple groups
  • Built-in Linear regression or vector for optimizing load measurements
  • The Auto Set feature automatically optimizes detection and adjusts display
  • Hi/lo alarm tolerance limits work in conjunction with the data port and external pump shut-off service

Boltstress G6 Montitor
UT-G6-0001 G6 Ultrasonic Bolt Stress Monitoring Kit

The G6 Bolt Monitor has take all of the functionality of the G5 and improved upon it.  the G5 broke so many boundaries when it set the new benchmark for Ultrasonic bolt tension monitoring.

Technical Specifications

  • Sunlight readable colour QVGA display (320 x 240 pixels)
  • Combined digital and RF display
  • Auto Correlation – Transducer Placement
  • Custom auto calibration feature
  • USB 1.1 connectivity
  • 4GB internal & up to 64GB external SD memory
  • Import & export files – between Boltstress G6 and G5 instruments
  • Li-Ion pack & 6 AA emergency battery backup option
  • Measure Modes – Pulse-Echo, Echo-Echo, Echo-Echo-Verify (triple echo)
  • Analog, serial & alarm outputs
  • Up to 25 Metre long bolts can be measured

Norbar USM-3
40334 USM-3 Ultrasonic Stress Meter

The USM-3 has been both laboratory and field-proven to be the most accurate, reliable and cost effective solution to bolting failures which could place workers at risk, lead to the loss of production and/or cause damage to capital equipment.

Technical Specifications

  • Resolution
  • Large 1/4 VGA back lit display is easily visible from a distance and in poor light
  • Can store up to 2000 measurements
  • Rugged steel and aluminium case designed for production and site environments
  • USM 3 is supplied in a rugged water tight (Pelican (R)) case complete with AC adaptor, nylon carrying case, 6″ transducer cable, RS232 data transfer cable, 4 oz bottle couplant and operation handbook
  • Measures fasteners of virtually any material from 1/2 inch (12mm) to over 50 feet (17m) in length
  • 0 – 10V analogue output for control of tightening tools such as a Norbar Torque Multiplier
  • Measurement modes of pitch – catch and pulse-echo
  • Unit can be operated with mains power supply or via 4 “C” cell batteries
  • Sealed membrane keypad with tactile keys
  • Works with magnetic and glue on transducers from 1 MHz to 10 MHz