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Bolt Tension Monitors

Bolt tension monitors are highly sensitive Ultrasonic meters used by industries to measure bolt load, elongation, stress, and percentage of strain on threaded fasteners. Bolt Tension Monitors are instruments designed to monitor stresses on threaded fasteners for delivering precise bolt loads to the joint.

 
Stanlay is an authorized distribution partner to Dakota Ultrasonic USA for its range of instruments. Here we offer Minimax Bolt Tension Monitor & MAX II Bolt Tension Monitor that ultrasonically measure the elongation produced by tightening a threaded fastener.
 
Dakota Ultrasonics USA -Bolt tension Monitor Selection Guide:
 

Parameters

Mini Max

Max II

Time Measurement in ns

Yes

Elongation Measurement

Yes

Clamp Load

Yes

Stress

Yes

Strain %

Yes

Bolt Material Types

Yes, Select Material types from preset or custom list

Use with Transducer types

 

 

Single element - 1 MHZ to 10 MHz frequencies, and 1/8” to 1” diameters

Magnetic & Non Magnetic options available

Magnetic & Non Magnetic options available

Glue-On for short bolts with minimal/ short elongations to eliminate transducer placement errors.

Yes

Temperature Sensor

Optional. To be selected at time of ordering. Part no : A-156-8001

Display view

RF (full wave view)

Yes

+/- Rectified (half wave view)

Yes

Large digits

Yes

Screen Size

1/8" VGA Grayscale display, viewable area 62mm x 45.7mm

5.7 inch diagonal, Blanview sunlight readable color, QVGA Color TFT Display

Split screen- combination (wave plus large digits)

No

Yes

Screen Refresh Rate

30 Hz

60 Hz

Capability & Performance

Velocity

1250 – 13995 m/s

Measurement Modes

Pulse-Echo (P-E)

Pulse-Echo (P-E),

Echo-Echo (E-E), or Echo-Echo-Echo (E-EV)

Measurement Range dependent on material type and consistency

1’’ to 50ft

(25.4 mm to 15.24 m)

1 ’ to 999.999 ’

(25.4 mm to 25.4 m)

 

Measurement Gates

 

One gate with audible and visual alarm Amplitude 5-95%,1% steps

Three independent gates depending on measurement mode selected, with audible and visual alarms

Amplitude 5-95%, 1% steps

Damping

50, 75, 100, 300, 600, & 1500 ohms.

Pulser Type

Square Wave

Spike, Square Wave & Tone Burst

Pulser Voltage

Selectable 100, 150 and 200 volts

100 - 400V

 

 

Pulse Width

 

Selectable options Spike, Thin, and Wide. 80 to 400 ns

Selectable step options Spike, Thin, Wide, HV Spike, HV Thin, HV Wide, TB.5 MHz, TB 1MHz, TB 2MHz, TB 5MHz, TB 10MHz.

Spike 40 ns, Square Wave 80 to 400 ns, Tone Burst 50 ns to 1 microsecond

Alarm Outputs

Yes

Analog Out put: Proportional outputs (amplitude or distance), 0-10 volts

No

Yes

Key Pad

Membrane switch with 12 tactile keys

Membrane switch with 21 tactile keys

Connections

Direct USB-C 1.1 PC connectivity. Windows & OSX interface software

 

 

 

Explore the Products
MAX II Bolt Tension Monitor

MAX II Bolt Tension Monitor

The Dakota Ultrasonics MAX II, Ultrasonic Bolt Tension Monitor, defines the State of the Art in the measurement of the actual clamp load produced by tightening a fastener. The MAX II can measure time, elongation, load, stress, or %strain in bolts of virtually any material from 1 inch to 100 feet in length. By storing the reference waveform and displaying it for comparison while the elongation is being measured, the MAX II minimizes operator training.

Minimax Bolt Tension Monitor

Minimax Bolt Tension Monitor

Minimax bolting solution for ultrasonic measurement of elongation produced by tightening a threaded fastener.

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