Flaw detector

        Flaw detector Eu 301 Eu 302 Eu 302S are devices designed to study the internal structure of solid materials such as: concretes, graphites, granites, sandstones, marbles, as well as liquids and gases. It is used to measure building elements that require high safety parameters.

 The principle of operation is based on the measurement of the passage of an ultrasonic wave of a certain frequency and high energy through the tested material. A physical phenomenon consisting in a change in the speed of propagation of a mechanical wave in an environment of variable density was used.

Discontinuities, cracks and differences occurring in the structure of the tested material cause wave deflection and changes during the passage of the acoustic wave through the test material.

A short movie showing how the 302S works

New !!! The EU-310 model is designed for operation in harsh and demanding conditions. Designed in the form of a comfortable, small suitcase. This significantly facilitates the transport of the device, additionally protecting it against external factors.

Model Eu-31O:

- 10-inch color display providing access to the device's functions, shows the course of vibrations in the tested material and gives the possibility of more precise determination of changes in the structure of the material
- oscilloscope: two measurement channels, measuring range 0-10MHz
- USB port
- accuracy of the measurement time up to 10 ns
- mathematical functions
- recording of measurement data on the carrier

                       Model : EU-310

      The ultrasonic wave is produced by the transmitting head, the receiving head records the moment of passage of the ultrasonic wave through the tested material. The display of the concretescope shows the result of measuring the time of transition of the wave between the transmitting and receiving heads.

The measurement time is compared with the time determined for the standard of the tested sample, the visible deviation of the measurement result in relation to the standard indicates internal damage to the tested material. The high accuracy of the EU-301 allows to measure the change in the time of passage through the test material up to 10ns.

The high-energy transmitting head allows you to measure materials several meters thick. Carrying out the measurement does not cause damage, change of structure or destruction of the material. The EU-301 measuring instrument has a durable housing and is resistant to weather conditions, can operate in the temperature range of -10°C to 40°C. The lightweight portable device allows you to perform many hours of measurements, using energy-saving electronic systems and modern Li-lon batteries.

Flaw detector 300 series are a proven, effective device for determining the quality of concrete buildings, spans, pillars, columns, graphite blocks, stone, marble. Analysis of measurements allows to determine places, heterogeneity, changes in density, cracks, deficiencies and other anomalies in the internal structure of the tested material.

The speed of sound in a given medium depends on various factors, e.g. on stresses and densities in the case of solids, on temperature in the case of gases and liquids. Sounds are acoustic waves audible by humans, they are vibrations of particles of the medium occurring at frequencies from 16 Hz to 20 KHz., vibrations of the medium occurring at a frequency above 20 KHz are ultrasound. Under constant conditions, the speeds of sound in different mediums are relatively stable and determined.

The following are the speeds of sound for several mediums under normal conditions (temperature 20°C, normal pressure 101325 Pa):

- steel - 5100 m/s

- concrete - 3800 m/s

- water - 1490 m/s

- air - 343 m/s

Sound waves propagate much faster in water and solids than in air. The speed of sound in the air (and also in general - in gases) clearly depends on the temperature (more precisely, on the square rootfrom the temperature expressed in Kelvin).

The higher the temperature of the air, the faster its particles move and the greater the speed of sound. Under typical conditions that we encounter every day in the Earth's atmosphere, a change in air temperature by 10 degrees Celsius will cause a change in the speed of sound by about 5 m / s.