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ultrasonic bolt measurement device

After preload, ultrasonic testing offers precise bolt tension assessment. It entails directing an ultrasonic signal down the fastener and timing how long it takes for it to come back up. The device shows the data and sends it to another device. To accomplish accurate single-shot time-of-flight measurement, the system uses a hybrid technique that combines the benefits of analog and digital signal processing techniques. The software of this device is specifically developed for the bolting industry, ensuring ease of use and quick understanding for industry professionals.


 ABS Sonar


Lemo 00: ultrasonic and 0B: temperature and I/O communication
USB - Rugged, sealed USB micro-B 
SSR switched on programmable limits
SSR EN50130-4 compliant
ARM® Cortex™- M4 Microprocessor

Sonar: The All-in-One Bolt Load Measurement Solution

Say goodbye to complex bolt load measurement setups and embrace the future with Sonar. This innovative device seamlessly measures, displays, stores, and transfers critical bolt load and elongation data in a single, user-friendly package.

Sonar's edge:

  • Combined analog and digital processing: Ensures rapid signal acquisition and precise single-shot time-of-flight (TOF) measurement.
  • Intuitive color touchscreen: View all data clearly on the glove-compatible 4.3" display, making operation effortless.
  • Secure data storage: Store data and digital signal traces for later analysis and transfer via USB.
  • Automatic temperature compensation: Maintain accuracy with the included magnetic temperature probe.
  • Flexible power options: Choose from Li-ion batteries, fast charger, or standard 5V USB devices for convenient operation.

Built for the bolting industry:

  • Developed with industry experts: Sonar's software caters specifically to bolting needs, ensuring intuitive operation and reliable results.
  • Easy verification of bolt load: Ensure proper tightening to prevent joint failure and guarantee assembly integrity.
  • Long-term monitoring: Track bolt load over time to monitor asset health and prevent potential issues.

Sonar empowers you with:

  • CE marking: Confirms safety and compliance for global use.
  • Rugged construction: Built to withstand demanding environments.
  • Sunlight-readable display: Navigate with ease in any lighting condition.
  • IP44 rating: Protected from dust and water splashes.
  • Real-time signal tracking: Monitor data acquisition closely.
  • Password-protected data collection: Secure your valuable information.
  • Flexible storage options: Choose the format that suits your needs.
  • High-resolution output: Connect to other systems for further analysis.
  • Extensive temperature range: Operates in diverse environments.

The Sonar kit includes everything you need:

  • Sonar instrument
  • Instrument carry case
  • Tool case
  • Transducer cable
  • Ultrasonic couplant
  • Temperature probe
  • Fast charger
  • USB data cable

Order your separate transducer to match your specific bolt requirements.

Invest in Sonar and experience the future of bolt load measurement.

After the sale, we are delighted to assist you with any technical concerns or inquiries. Don't hesitate—let's connect! Feel free to reach out to us via phone: 828282-9795 or drop us an email at We're here to help and ensure your satisfaction.

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People Also Ask

The Sonar ultrasonic TOF measurement device is a versatile unit designed to measure, display, store, and transfer bolt load and elongation data. It utilizes a hybrid technique, combining analogue and digital signal processing for fast signal acquisition and precise single-shot TOF measurement. The device features a rugged, sealed color touch screen for easy operator use, and the data is logically presented on a 4.3” color resistive touch screen, usable with gloves. It includes automatic temperature compensation through a magnetic temperature probe and a secure memory system for data storage and transfer via USB to a computer.

The Sonar ultrasonic TOF measurement device is powered by proven Li Ion batteries or through dual charger inputs. It supports fast charge using a standard external 9V supply or the waterproof micro USB connector from any standard 5V USB device, battery pack, or power supply. This ensures convenient and reliable operation, offering flexibility in power sources.

The Sonar ultrasonic TOF measurement device boasts several key features, including a light and rugged case, a color touch display, IP44 rating, real-time signal tracking, easy and intuitive operation, secure data collection with password protection, flexible and programmable data storage, programmable pulser, high-resolution output, long-life rechargeable Li Ion cells, various transducer options, and a real-time clock. It contributes to ensuring the integrity of bolted joints by providing quick verification of bolt load, ensuring correct tightening to design specifications, and enabling long-term monitoring for the integrity of bolted joint assemblies.

The Sonar ultrasonic TOF measurement device helps address concerns related to joint leakage and mechanical or fatigue failure by ensuring that bolted joints are tightened correctly to the design specification. It provides a quick verification of bolt load, allowing users to identify and rectify any issues promptly. This proactive approach helps prevent joint leakage and enhances the overall integrity and reliability of bolted joint assemblies.

The Sonar ultrasonic TOF measurement device features dimensions of 179x179x45mm and weighs 1.5 kg. It incorporates a color, sunlight-readable, touch display using the latest technology. The device is designed to be light, rugged, and portable, making it suitable for use in various applications and environments.

The Sonar ultrasonic TOF measurement device ensures data security through secure data collection with password protection. It offers flexible and programmable data storage, allowing users to customize how data is stored. The device includes a real-time clock, and date/time information is stored with every reading. The secure memory system also enables the transfer of data via USB to a computer for further analysis and retrieval.

The Sonar ultrasonic TOF measurement device operates in a temperature range from -20°C to +70°C, providing flexibility for use in diverse environments. Its full range of magnetic, non-magnetic, and glue-on transducers further enhances its adaptability, making it suitable for a wide variety of bolt applications.

An ultrasonic bolt gauge measures the elongation or stretch of a bolt by emitting ultrasonic waves and analysing the time taken for the waves to travel through the bolt. This provides valuable data on bolt integrity.

Bolt elongation is measured using ultrasonic bolt gauges that emit ultrasonic waves through the bolt. By analysing the time it takes for the waves to travel, the gauge calculates the elongation, indicating the bolt's tension.

Bolt tension measurement refers to assessing the amount of tension or stretching force applied to a bolt during tightening. This measurement is crucial for ensuring the integrity and reliability of bolted connections.

Bolt preload, or the initial tension applied to a bolt, can be measured using various methods, including ultrasonic bolt gauges and tensioning devices that provide real-time data on the bolt's tension.

Other Resources

Ultrasonic Bolt Elongation: The most accurate way to determine Joint Integrity
Why measure bolt elongation before every torque wrench or bolt tensioner operation?

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