Description

Digital Georesistivimeter for V.E.S.Vertical Electric Surveys. Equipment is characterized by maximum resolution and accuracy in geoelectric survey and great functioning rapidity. Once data acquisition is completed, data can be immediately processed with related data processing software. Power is supplied by embedded battery pack and it is managed through a microprocessor able to provide wide autonomy of acquisition. Recording and saving of data takes place on internal Disk or on USB key (supplied). Unit is fully computerized and all operating functions are selected simply by touching menu on color LCD monitor 7″ with integrated touch screen.

Methodologies

• Vertical Electrical Survey
• Spontaneous Potential Measurement
• Induced polarisation Measurement

Technical Specifications

General

Description

RFT321 instrument calculates frequency of longitudinal, torsional and flexional resonance on concrete or natural stone samples in order to determine Modulus of Elasticity, damping factor and to analize deterioration caused by the freeze-thaw cycles of material which is investigated. Instrument RFT321 is provided with PC embedded board and colour LCD monitor with integrated 7″ touch-screen. SD removable memory on front panel ensures a quick and safe management of data acquired. User is guided through the whole measuring procedure in a simple and intuitive way, due to some explicative illustrations. RFT321 instrument is also provided with RESreader application, which allows to manage and organize measurements and to create test reports.

Methodologies

MEASURE OF RESONANCE FREQUENCY

Used for determining the Longitudinal, Transverse (Flexural) and Torsional resonant frequency of concrete and natural stone samples. The reasonant frequency allows the determination of the Dynamic Modulus of Elasticity and the Dumping coefficient analysis frequently used, for instance, to determine the degradation due to freezing and thawing cycles. The methodology of investigation is based on the determination of the fundamental resonance values , which is generated from a strain induced on the sample by the impact of steel balls of different diameters detected from an accelerometer sensor. As result of the strain induced on the sample (which can be of three types: longitudinal, transverse (flexural) and Torsional), it is possible to determine the characteristics of the materials investigated, such as: Young modulus of elasticity, Rigidity modulus and Poisson’s ratio.

Technical Specifications

General

Description

TLOGWLS heat flux meter for transmittance measurements is characterized by the maximum accuracy in the data acquisition (24 bit resolution) as well as its great versatility and simple operation. Thanks to the use of four probes (for the measure of the contact temperature) and one heat flux plate connected to the main TLOGWLS unit through proper wireless connection (made up of some completely independent and proper remote units for the acquisition and transmission of data), instrument takes the measurement of transmittance values on opaque walls of whole buildings, as specifically required by the most recent normative regarding energy-saving.

Recording modalities can be set by using the software in a very intuitive and quick way, in order to carry out monitoring with maximum accuracy and easiness. TLOGWLS heat flux meter is also arranged for medium and long-term acquisitions and it is suitable for the measure of environmental parameters both on site and in laboratory. Unit can also manage one optional couples of remote transmitting units TLW2; TLW3 in order to perform recording of the transmittance parameters in 2 different measurement areas in the same building at same time. All data acquired are downloaded on PC and processed by GTLAB software (provided with the equipment) for the direct calculation (through progressive average method) of K coefficient (transmittance) and parameters related to the thermal insulation of tested building. Instrument complies with ISO 9869 standard

Fields of use: Acquisition of environmental parameters both on existing buildings (pre-restoration) in order to know the actual need of insulation necessary to comply with the parameters expected by the normative, and also on new building (post-restoration) in order to value the quality in terms of insulation of the work it has been carried out.

Accessories included:

• n.1 TLW2 – Wireless unit (2 channels)
• n.1 TLW3 – Wireless unit (3 channels)
• n.3 AL52100 – USB Power supply unit
• n.1 CUMAUMB1M – micro USB cable
• n.2 CUMAECHM1M – TLW2, TLW3 charging cable
• n.1 GTLAB – Processing software
• n.1 VMP342912TLG – Transport case for TLOGWLS and tablet
• n.1 VMM423412TLG – Transport case for TLW2 andTLW3
• n.1 SDMHC8– 8 Gb micro SD memory
• n.1 Heat sink compound
• n.1 Android terminal

Methodologies

MEASURE OF THERMAL FLOW

In building technology, the testing of the insulation capacity of building materials is an important topic of study. In addition to laboratory measurements of the thermal properties of materials, their behaviours is also studied through tests on field, in order to obtain information on the behaviours in different climates. The total heat flow through a material consists of a conductive, convective and radioactive part. In order to measure the heat transmission, a heat flow meter and some thermometers are used, assembled on both sides (interior and exterior) of a wall. After recording the flow and temperatures for a few hours, measured with high precision, the data is elaborated to obtain the average heat transmission of the wall.

Technical Specifications

General

Description

SONIC15 is a device for non Destructive Tests with ultrasonic pulse velocity and sonic tests on masonry through instrumented hammer. In spite of compact dimension of the unit, there is a wide monitor of 7’’ with integrated touch screen which allows to use it on site in immediate and effective way. Waves acquisition and visualization parameters could be easily changed in simple and immediate way through touch screen, in order to allow on site first checking of recorded data. SONIC15 can be used for surveys both on cement and concrete elements both on masonry structures. According to different kind of performed tests, just connect to instrument necessary accessories as different kind of ultrasonic probes or impulsive trigger hammer for impact tests. SONIC15 instrument together with the new Controls digital sclerometer can be used for Sonreb tests.

Methodologies

ULTRASONIC PULSE VELOCITY

The method is based on the propagation speed of longitudinal ultra-sonic waves inside a reinforced concrete structure. The propagation speeds depends on the characteristics of the material such as elasticity, density, presence of gaps, micro-holes, etc… From the determination of the following parameters: reflection, refraction, transit time (T.O.F.) and mitigation of the vibration energy, it is possible to obtain information on:

•  Homogeneity of the mix
•  Elasto-mechanical characteristics
•  Entity, geometry and location of particular faults or internal defects, variations in time of the quality parameters of the concrete

Ultra-sonic tests through which it is possible to evaluate the transit speed of the pulses (with known thickness and time) are particularly important.

The primary goal of the Ultra-sound survey is to record the time of fly (TOF, Time of Fly) and the following calculation of the speed. In order to calculate the propagation speed of longitudinal waves (P waves), the arrival of the first wave-train must be found out with accuracy. In order to perform this operation correctly, the instrument must be equipped with oscilloscope that allows to visualize the transit wave on the device display.

The ultra-sound tests can be carried out with:

•  Direct method

When the transmitting and receiving probes are positioned on the opposite sides of the element to test.

• Semi-direct method

When the E/R probes are positioned on adjacent surfaces, usually orthogonal, of the element to test

• Indirect method

When E/R probes are positioned in the same side of the structural element to test.

SONIC TEST

The principle of the sonic tests on masonry is the same as principle of Ultrasonic Pulse Velocity on concrete.

The only difference is the method to produce the longitudinal elastic wave used for the measurement: a hammer is used instead of an ultra-sonic pulse.

The frequencies thus produced (a few hundreds of Hz), lower than those of the ultra-sounds (a few tens of KHz) are able to also cross scarcely compact masonry walls, such as brick-faced or brick walls, thus allowing to evaluate the conservation state, through the speed and/or mitigation values of the wave produced.

This type of test can also be applied on concrete structures, which sizes do not allow to use ultra-sounds, because these can no longer be measured at a few metres from the source. The sonic tests give less accurate values compared to the tests with ultra-sounds, but they can be performed also on scarcely compact materials and/or at a distance of a few metres.

Technical Specifications

Description

WCH4 is an innovative modular wireless instrument for cross-hole tests on foundation poles. System core are motorized reels electronically controlled on which are mounted hig-power borehole probes for cross-hole investigations on foundation poles, diaphrams, and all those infrastructural cement or concrete works that could be verified by cross-hole tests, that is through discent in tubes prepared at casting and subsequently filled by water. Each reel of WCH4 system integrates a motorized probe with cable 60 mt, and all control electronics which supervises automatic management of the probes during descent/ascent of probes (cross-hole) and saving data. Due to Rugged tablet and the almost complete absence of physical cabling, settings, measurement management, besides display and interpretation of acquired data, are easy and immediate. In direct analysis mode each wave emitted by the internal generator is fully displayed and moreover it’s possible to modify parameters of display to make even easier reading velocity through crossing and the possible presence of tested defective material. Through the use of 2-3-4 motorized reel with automatic and simultaneous movement, it’s possible to exponentially reduce survey time, because with one only descent/ascent of probes inside investigated pole (which has to be instrumented with 2-3-4 tubes) it’s possibe to obtain corresponding sections. Acquired data at every single pulse are displayed in real time on large monitor of the tablet, allowing immediate viewing of possible imperfection in the investigated structure. Executive procedure of cross-hole with 2-3-4 channels is managed with fully automated modes. Only operations required by user is the placement of encoder to read the position of the motorized probes on prepared tubes and the early alignment of the probes on pole head. Once concluded this operation, just push the key to start data acquisition which is automatically managed by the system. It’s possible to verify data as they are acquired in order to check in real time performance test. It’s also possible to immediately print test report with its data of the just run investigation directly on site. Cross-hole method of analysis on foundation poles of buildings and infrastructural works allows to perform an high resolution accurate and qualitative verification of investigated material, usually a foundation pole. An ultrasonic wave is sent from a transmitting to a receiver device, which are automatically guided from the instrument along total lenght of the pole entirely “drowned” during casting. Velocity of the sonic wave and its energy are strongly influenced by the quality of the cement. So, it’s possible to verify its features and provide a tomographic representation called diagraphy. In CROSS-HOLE tests on concrete pole (CLS), in order to obtain a right measurement of delay of the crossing wave and an optimal reception of the signal, it’s necessary to manage constant advancing of the probes, which is feasibile due to medium velocity indicators and measurement of depth displayed with a graphic on manual encoder which, in case of overcoming of medium parameteres, indicates what to do to return back in limits.

Reference standards: ASTM D6760-08

Methodologies

The cross-hole is a method to analyze the foundation poles of buildings that, with the use of ultra-sounds, crosshole, allow to carry out an accurate high resolution test. An ultra-sonic wave is sent from a transmitter to a receiver, which are convoyed automatically by the device along the entire length of the pole inside the pipes embedded inside of it, during casting. The speed of the sonic wave and its energy are strongly influenced by the quality of the cement. Therefore, it is possible to assess the characteristics and give a tomographic representation in 2D and 3D called diagraphy.

Technical Specifications

Description

Cronosonic is an instrument for ultrasonic pulse velocity through transparency which can be used to investigate poles, truss, diaphrams, laboratory samples and many other structures made of concrete or stone. It performs measurements with direct, indirect and semi direct method. Very compact instrument is provided with display for realtime visualization of the time of fly (T.O.F.) and velocity of investigated material. Measurements can be transferred to a PC through USB connection. For the visualization of wave form it is possible to interface instrument with external oscilloscope. Ultrasonic pulse velocity survey is a standardized system in diagnostics of concrete. From analysis of compression P waves into material, it is possible to get Time of Fly (T.O.F.) of ultrasonic waves and propagation speed of the same into investigated material. This high frequency method is particularly indicated for compact materials such as dried concrete and on structural elements of reduced dimensions as trusses, poles, etc. This instrument series allows to estimate mechanical characteristics of materials, evaluate homogeneity rate and any eventual fractures, cavities, defects or anomalies of the element.

Instrument complies to regulation C597 – 09 Standard Test Method for Pulse Velocity Through Concrete.

Methodologies

ULTRASONIC PULSE VELOCITY

The method is based on the propagation speed of longitudinal ultra-sonic waves inside a reinforced concrete structure. The propagation speeds depends on the characteristics of the material such as elasticity, density, presence of gaps, micro-holes, etc… From the determination of the following parameters: reflection, refraction, transit time (T.O.F.) and mitigation of the vibration energy, it is possible to obtain information on:

•  Homogeneity of the mix
•  Elasto-mechanical characteristics
•  Entity, geometry and location of particular faults or internal defects, variations in time of the quality parameters of the concrete

Ultra-sonic tests through which it is possible to evaluate the transit speed of the pulses (with known thickness and time) are particularly important.

The primary goal of the Ultra-sound survey is to record the time of fly (TOF, Time of Fly) and the following calculation of the speed. In order to calculate the propagation speed of longitudinal waves (P waves), the arrival of the first wave-train must be found out with accuracy. In order to perform this operation correctly, the instrument must be equipped with oscilloscope that allows to visualize the transit wave on the device display.

The ultra-sound tests can be carried out with:

•  Direct method

When the transmitting and receiving probes are positioned on the opposite sides of the element to test.

• Semi-direct method

When the E/R probes are positioned on adjacent surfaces, usually orthogonal, of the element to test

• Indirect method

When E/R probes are positioned in the same side of the structural element to test.

Technical Specifications

Description

24 bit seismograph for seismic prospecting with refraction, reflection, active and passive MASW (Re.Mi.), SASW, Down-hole, Cross-hole, seismic tomography, HVSR investigation methodology. The unit is equipped with a capture card with 24 bit resolution. It is possible to serialize two units to reach 48 channels. Through the management software, to be installed on any PC or notebook connected to the acquisition unit, it is possible to set all the parameters relating to the type of seismic survey that you intend to carry out with maximum simplicity and speed.

Methodologies

• REFRACTION SEISMIC
• REFLECTION SEISMIC
• M.A.S.W
• SEISMIC DOWN-HOLE/CROSS-HOLE
• Re.M.i / ESAC
• SEISMIC TOMOGRAPHY
• M.A.A.M

Technical Specifications

Description

Top-range seismograph equipped with 24-48-72-96 embedded channels for active and passive seismic surveys. X824S basic configuration integrates 24 channels and can be expanded with 24 channels modules, without external boxes, up to maximum 96 integrated channels. Instrument has a PC with 10” monitor and operative system Windows 10. Management of all settings, acquisition parameters, recording and visualization of recorded data, are performed sequentially and in an intuitive manner by means of the operative system installed on the instrument, which includes also a guide with step by step instructions for the realization of the most common surveys. High flexibility together with high dynamic range make X824S the ideal solution for every kind of active and passive seismic survey: surface seismic investigations such as Refraction, Reflection (P and S waves), M.A.S.W. , Re.Mi. , E.S.A.C., bore-hole surveys such as Down Hole and Cross Hole, stand-alone passive station H.V.S.R. and vibrational monitoring. With particular regards to seismic methodologies, 24 channels module allows the use of a single cable with 24 takeouts that, together with integrated battery pack, reduces the number of accessories to bring on site.

Methodologies

• REFRACTION SEISMIC
• REFLECTION SEISMIC
• M.A.S.W
• SEISMIC DOWN-HOLE/CROSS-HOLE
• SEISMIC VIBRATION MONITORING
• NAKAMURA METHOD, HVSR, H/V
• Re.M.i / ESAC
• SEISMIC TOMOGRAPHY
• M.A.A.M

Technical Specifications