ELECTRONIC & ENGINEERING CO. (I) P. LTD.

Sono L

Sono L

SONO-L Hardness Tester | Advanced Hardness Tester Machine

SONO-L Portable Hardness Tester is an advanced hardness tester machine designed for fast, accurate, and non-destructive hardness measurement of metallic components. Built on Ultrasonic Contact Impedance (UCI) technology, it delivers reliable results for welds, forgings, heat-treated parts, and complex geometries without damaging the material.

FIIND Sono L

Leeb rebound sensors – Repeatable precision and flexibility

Latest sensor technology for optimal measurement results
Due to the stable design, our Leeb rebound sensors are ideally suited for everyday use on massive components in the industrial work environments. The “2-in-1 concept” enables the parallel use of Leeb rebound sensors and UCI (Ultrasonic Contact Impedance) measuring probes with the SONODUR 3 device.

The measured values are evaluated via an app based on the future-proof Android software platform. All information is visible at a glance. The measured values are statistically summarized and individually displayed in result lists as well as by means of graphical representation and tolerance thresholds in a user-friendly manner. The measured values can be exported for further data processing.

The operating principle of the Leeb rebound method consists of accelerating an impact body, at the front end of which is a hard metal ball, with a defined energy against the surface of the material to be measured. The impact of the hard metal ball causes a deformation of the surface, which leads to a loss of acceleration energy. This energy loss is determined by measuring the velocity and from this a hardness value is calculated in Leeb.

Areas of application are large, solid test parts with a minimum component weight requirement of 5 kg and a minimum thickness greater than 25 mm (SONO HLD).

Advantages:

  • 2-in-1 concept: Rebound hardness measurement and UCI
    (Ultrasonic Contact Impedance)
    – Each SONODUR 3 can be easily retrofitted (SONODUR L App)
  • Calibration almost identical to UCI:
    – Calculation of the Vickers hardness HV from the L-value
    (LD and LG acc. to ISO 16859)
    – Conversion to other hardness scales or tensile strength acc. to EN ISO 18265-2019,ASTM-E 140-2019, EPRI correlation-P91-2020 (HV5/HV10 with HB) and others
  • Easy Handling: Immediate readiness for measurement, wireless transmission of measured values via Bluetooth connection to SONODUR 3 – allows maximum flexibility and freedom in positioning the sensor on the component
  • Simple measured value adjustment possible through comparative measurement on alloys with different E-modulus analogous to UCI testing: adaptation of the Leeb number (HL) for complex systems such as cast iron (E-modulus 80 – 180 GPa), aluminium alloys with high silicon content (65 – 105 GPa), various non-ferrous metal alloys, etc.

Product Overview

The SONO L is a compact and reliable portable Leeb hardness tester designed to simplify non-destructive hardness testing without compromising on accuracy & reliability.

Built for both shop floor and field inspection for every type of industrial application. It enables precise hardness measurement directly on finished parts, and also eliminates the need for sample cutting or destruction. Using advanced Ultrasonic Contact Impedance (UCI) technology SONO L delivers highly accurate results on welds, forgings, heat treated parts and complex geometries. It is a modern alternative for traditional hardness testing methods such as Rockwell (HRC), Brinell (HB),Vickers (HV).

SONO L provides precise and repeatable measurements with automatic conversions to multiple hardness scales and tensile strength values in compliance with EN ISO 18265-2019, ASTM E 140 2019 and EPRI P912020. Its Bluetooth enables wireless data transfer to ensure seamless communication with the SONODUR 3 system.

The SONO L simplifies hardness testing with superior accuracy, making it ideal for production lines, maintenance and inspection environments.

Key Features

Features

  • Advanced Ultrasonic Contact Impedance (UCI) technology
  • Portable and lightweight hardness tester machine design
  • Fast and accurate hardness measurement
  • Non-destructive testing method
  • Supports Rockwell, Brinell, and Vickers hardness conversions
  • Digital display with high resolution
  • Easy calibration and user-friendly interface
  • Stores multiple test results
  • Suitable for flat, curved, and irregular surfaces
  • Weld hardness inspection capability
  • High repeatability and accuracy
  • Battery-operated portable system

Types of Hardness Testing Supported

The SONO-L supports and correlates with major types of hardness tester methods:

  • Rockwell hardness test (HRC, HRB)
  • Brinell hardness test (HB)
  • Vickers hardness test (HV)
  • Ultrasonic Contact Impedance (UCI) method

This makes it a versatile solution for modern manufacturing and inspection environments.

Applications and Industries served

Applications-

The SONO-L Portable hardness tester machine is widely used across industries for accurate material evaluation:

  • Forging and casting inspection
  • Aerospace material inspection
  • Heavy engineering applications
  • Manufacturing quality control

It is especially useful for field applications where traditional machines cannot be used.

Industries served-

  • Aerospace
  • Heavy Engineering
  • Infrastructure
  • Quality testing laboratories

Why Choose SONO-L Hardness Tester?

The SONO-L is designed for modern industrial hardness testing requirements, offering superior flexibility compared to conventional systems.

Unlike traditional systems used for Rockwell hardness test, Brinell hardness test, and Vickers hardness test, the SONO-L provides portable, non-destructive inspection without requiring sample preparation.

It is compatible with different measurement needs and supports advanced industrial inspection tools and accessories such as probes, calibration standards, and digital data systems.

Benefits

  • No damage to test component
  • Suitable for finished and coated surfaces
  • Portable and easy to operate
  • High-speed measurement
  • Accurate conversion between hardness scales
  • Ideal for field inspection
  • Reliable performance in harsh environments

Need a Reliable Portable Hardness Tester?

Get accurate, fast, and non-destructive hardness measurements with the SONO-L Portable Hardness Tester. Ideal for Rockwell, Brinell, and Vickers hardness testing applications across industrial environments.

Ensure precision in every inspection with advanced UCI technology built for field and laboratory use.

Contact Our Experts

Frequently Asked Questions

What is a hardness tester machine used for?

A hardness tester machine measures the resistance of a material to indentation, helping determine strength, durability, and quality.

What is the SONO-L hardness tester based on?

It uses Ultrasonic Contact Impedance (UCI) technology for non-destructive hardness testing.

Can it replace Rockwell, Brinell, and Vickers hardness tests?

It provides equivalent hardness values and is widely used as a portable alternative for these methods.

What are probes used for in hardness testing?

Probes are used to apply controlled force and measure material response during testing.

Is SONO-L suitable for field use?

Yes, it is portable, battery-operated, and designed for on-site industrial inspection.

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