Product Description
Technical Specification
Transducers
Accessories
Instruction Manual
Data Sheet

BG80 Bolt Tension Monitor

When nuts and bolts are fastened together under load the action of tightening the nut increases the force applied to the bolt causing elongation.

The BG80 bolt tension monitor accurately measures this elongation allowing the gauges to accurately measure time (nanoseconds), elongation, load, stress, and %strain of the bolt.

By using ultrasonics, bolt tension monitors are not affected by temperature, friction or resistance factors affecting the accuracy of standard torque measurement techniques - giving the BG80TDL accuracy within 0.0001mm (0.00001 inch).

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

 

BG80 Bolt Tension Monitor

Features:

  • Range of display & measurement options including: Elongation, Load, Stress, and %Strain, RF, Rectified, Large Digits with Limits Bar
  • BG80TDL features temperature compensation to counteract measurement irregularity caused by temperature change
  • Data storage capability: 4GB internal memory
  • Auto Set feature automatically optimizes detection and adjusts display
  • Hi/Lo Alarm tolerance limits work in conjunction with the data port

 

Select a transducer 

 

 

bolt tension

How does it work?

As a fastener is tightened it stretches (elongates) in length.

Manual torque wrenches measure the force applied when tightening a fastener, the accuracy can be affected by temperature, friction and resistance.

As BG80TDL ultrasonically measures the change in length accurately determining the applied load of a fastener as it is tightened, they are not affected by these factors.

BG80 Bolt Tension Monitor

Technical Specification

Model & Part Number BG80TDL
Material thickness digits display

Measurement Mode1 PE
Measurement Rate:
Manual:

8 readings per second
Measuring Range2

25.4 - 15,240mm (1 - 600")

Measurement Accuracy2

0.0001mm (0.00001")

Measurement Resolution

0.001mm (0.0001") or 0.0001mm (0.00001") switchable

Velocity Calibration Range

1250 - 13995m/s (0.0492 - 0.5510 in/µs)

Additional Features:  
Limit alarm mode

Memory & Data logging 4GB internal memory, Grid format batching
Bitmap graphic capture
Calibration Options automatic, fixed, single & 2 point
Temperature Sensor 5 pin LEMO 1
Screen Refresh Rate 30Hz
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, & 1500ohms
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 25,400 mm  (0 - 999.9”) at steel velocity
Measurement Gate One gate with audible and visual alarm. Amplitude 5-95%, 1% steps
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
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 millimetre, inches or Time (μs). °C or °F
Detection Zero Crossing
Bolt Materials Select types from a preset or custom list 
Glue-On Available for short bolts with minimal/short elongations to eliminate transducer placement errors
Transducer Probe Type single element
Transducer Frequency Range 1 - 10MHz
Display 1/8in VGA greyscale display (240 x 160 pixels); viewable area 2.4 x 1.8in (62 x 45.7mm)
Units (selectable) mm or inches
LED Backlight on / off / auto
Repeatability / Stability Indicator

Battery Type 3 x AA alkaline
Battery Life (approximate)

Alkaline 35 hrs, Nicad 10 hrs, NI-MH 35 hrs

Low Battery Indicator

Battery Save Mode auto
Operating Temperature -10 to 60ºC (14 to 140ºF)
Size (w x h x d) 63.5 x 165 x 31.5mm
2.5 x 6.5 x 1.24 inches
Weight (including batteries) 383g (13.5oz)
Aluminium case design with gasket sealed end
caps, waterproof membrane keypad

Transducer Connector Type LEMO
Interface

USB

Packing List

Elcometer NDT BG80TDL gauge, couplant, carry case, user manual, test certificate, 3 x AA batteries, DakView software, USB transfer cable

 

¹ PE: Pulse-Echo Mode

² Measuring range & accuracy depends on material, surface conditions and the transducer selected

Transducers

 

Bolt Gauge Transducers  
A complete range of magnetic Bolt Gauge Transducers for use with the BG80DL & BG80TDL models. Bolt Gauge Transducers 

 

               

Part Number

Probe Diameter

Element Type

Probe

Characteristic

Damping

Microdot

Top

All Metals

               

2.25 MHz Bolt Gauge Transducers

TX2M25CM-5

1/4"

Si/El Non-Magnetic

Standard

S

TX2M25CM-6

1/4"

Si/El Magnetic

Standard

S

TX2M25DM

3/8"

Si/El Magnetic

Standard

S

TX2M25EM-5

1/2"

Si/El Non-Magnetic

Standard

S

TX2M25EM-6

1/2"

Si/El Magnetic

Standard

S

TX2M25GM

3/4"

Si/El Magnetic

Standard

S

               

5.00 MHz Bolt Gauge Transducers

TX5M00AM-2

1/8"

Si/El Non-Magnetic

Standard

S

TX5M00AM-3

1/8"

Si/El Magnetic

Standard

S

TX5M00CM-7

1/4"

Si/El Non-Magnetic

Standard

S

TX5M00CM-8

1/4"

Si/El Magnetic

Standard

S

TX5M00DM

3/8"

Si/El Magnetic

Standard

S

TX5M00EM-7

1/2"

Si/El Magnetic

Standard

S

TX5M00EM-6

1/2"

Si/El Non-Magnetic

Standard

S

TX5M00GM

3/4"

Si/El Magnetic

Standard

S

               

10.00 MHz Bolt Gauge Transducers

TX10M0AM-2

1/8"

Si/El Non-Magnetic

Standard

S

TX10M0AM-3

1/8"

Si/El Magnetic

Standard

S

TX10M0CM-4

1/4"

Si/El Non-Magnetic

Standard

S

TX10M0CM-5

1/4"

Si/El Magnetic

Standard

S


S - Standard Undamped Transducer 

Accessories

Cables & Adaptators  
TL-24030-3 T/Cable: 4' Single Lemo 00 to Microdot
TL-24030-10 T/Cable: 10' Single Lemo to Microdot
TL-24030-11 T/Cable: 20' Single Lemo to M/dot Single
TL-24030-12 T/Cable: 20' Lemo to Lemo 00
TL-24031 RS232 Cable (6'); DB-9 to Lemo
TL-24032 USB to Serial Adapter
Couplant  
TC-24034-1 Couplant: Standard; 4oz Bottle (Material Safety Data Sheet)
TC-24034-2 Couplant: Standard; 12oz Bottle (Material Safety Data Sheet)
TC-24034-3 Couplant: Standard; 1 Gallon (Material Safety Data Sheet)
TC-24034-9 Couplant: Hi-Temp 371°C (700°F); 2oz Tube (Material Safety Data Sheet)
Other Accessories  
TZ-24036 Temperature Sensor with 6' Cable