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The universal NDT instrument outlined below, named «UNISCOPE», is the company’s state-of-the-art design, intended to satisfy the highest requirements of NDT experts. At present, on the basis of a single hardware platform the instrument incorporates the two-channel AE system with advanced features, the acoustic leak detector, the tensometer and the vibrometer. Furthermore, additional functions of «UNISCOPE» are under development, which in the long view will allow for using this device as an ultrasonic thickness meter, a generator of test electric and elastic impulses, an integrated thickness meter, a measuring instrument of electrochemical potentials and terrestrial currents, an eddy-current scanner and a magnetometer. Such universality is reached through using various external measuring units to be connected to the common computing device, provided with generic software with the modern friendly interface. For information visualization, the device is equipped with a display protected with a transparent plate from mechanical and climatic impacts. Battery charging (p. 3, fig. 2) and electric supply state (p.4, fig. 2) LED indicators are located on the face side of the device. The electric supply switch (p. 3, fig. 1), two connectors for sources of analog systems (p.4a, 4b fig. 1), two connectors for external digital blocks (p. 6a, 6b fig. 1), as well as the section of interface connectors protected with a plug (p. 5, fig.1) are located on the side of the device containing, in particular, a connector for storage batteries charging. |
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Fig. 1. Face panel (1 – panel of control push buttons; 2 –panel of adjustment push buttons; 3 – battery charging indicator; 4 – electric supply state indicator). |
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Fig. 2 General view of the device (1 – keyboard; 2 – display; 3 – ON/OFF push button; 4а – Channel No. 1 connector for registration of analog signals; 4b – Channel No. 2 connector for registration of analogue signals; 5 – plug of interface connectors section; 6а – digital channel No. 1 connector; 6b –digital channel No. 2 connector). |
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Distinctive peculiarities of «UNISCOPE»:
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Description of main operation modes In the mode of AE measurements «UNISCOPE» is intended for nondestructive control without decommission of industrial and technological pipelines, adapters and jumpers, gate valves and pressure regulators, vessels and cylinders, hoisting mechanisms and other industrial equipment along with possible linear localization and operative assessment of danger degree of AE sources. Besides, in order to improve quality of useful signal separation at the background of various noises charge digital frequency filters and preliminary hardware filtration of input data by parameters of AE impulses are used. In parallel with AE registration by two analog channels parametric information can be recorded and by two digital channels in the single time scale for higher quality of the diagnostic information analysis. |
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In the leakage detection mode the «UNISCOPE» makes it possible to detect and quantitatively assess the values of gate valves leakages of various types and intention, working pressure and diameter for liquid and gaseous working environment. The leakage detection function is implemented on the basis of registration channels of AE impulses. The typical shape of leakage signals is identified by the system software. The value of medium consumption is evaluated on the basis of parameters of these signals. Depending on the type of the working medium, passage diameter and operating pressure of gate valves the average error of leakage may be equal from 0.1 to 20 l/min. In the strain measurement mode the «UNISCOPE» is used for measuring the object nominal diameter in the real time scale. An important operation peculiarity in this mode is its possible use along with AE measurements for parametric control accompaniment by means of observation of the changed value and loading character. |
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Unit «UNISCOPE» in Ex version and external matching unit «UNE-P» in Ex version have design implementing type of protection «n» (IEC 60079-15) and intrinsic safety «i» type for external circuits with level of protection «ia» (IEC 60079-11). Unit «UNISCOPE» in Ex version meets the requirements of IEC 60079-0. AE preamplifier «UNP» in Ex version is intrinsically safe (IEC 60079-11). Unit «UNISCOPE» in Ex version and connected devices can be located in hazardous areas according to their marking. Charger and interfaces connectors usage is forbidden in hazardous areas. Explosion protection of AE preamplifier «UNP» in Ex version is provided by matching its intrinsically safe parameters with output intrinsically safe parameters of unit «UNISCOPE» in Ex version. |
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Accessories |
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Charger |
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AE preamplifier «UNP» |
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AE sensor |
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AE sensor magnetic holder |
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Measuring amplifier for strain gage transducers «MC3» |
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External matching unit «UNE-P» |
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Digital channel cable |
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Preamplifier cable |
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Parametric cable «MC3» |
Basic technical specifcations
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General parameters of the mainfame |
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Display |
TFT LED, 5,7’’, 640х480 pixels, 262 144 colors |
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Battery enduranc |
8 hours |
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Supported interface |
SD/SDHC, Ethernet, USB2.0 |
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Processor |
ARM9 |
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Software operating system |
Linux |
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Operating temperature range |
- 20 ÷ + 40 ˚С |
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Environmental protection |
IP 65 |
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Overall dimensions |
300х170х60 мм |
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Weight |
2,6 kg |
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Analog channel to register AE and vibration |
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Number of independence analog channels |
2 |
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Preamplifer supply voltage |
6 В |
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Versions of switchable lengths of cable lines |
10м / 50м |
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Operating frequency range |
0,5 Гц ÷ 1 МГц |
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Versions of switchable frequency bands |
0,5 Гц ÷ 30 кГц, 1 кГц ÷ 100 кГц, 30 кГц ÷ 1 Мгц |
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Possibility to load diferent digital flters |
есть |
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ADC resolution |
16 bit |
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Maximum ADC sampling rate |
20 MHz |
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Size of oscilloscope record bufer of each channel |
8 Mb |
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Operation synchronism of analog channels |
± 1 µs |
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Digital channel to connect external measurement blocks |
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Number of independence digital channels |
2 |
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Transmitting interface |
RS 485 |
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Maximum baudrate |
500 kBauds |
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External measurement block supply voltage |
5 V |
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Operation synchronism of digital channels |
± 1 ms |
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Operation synchronism of digital and analog channels |
± 1 ms |
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External block for parametric measurements |
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Number of universal measurement channels |
2 |
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Switchable operating modes for universal measurement channels: - current loop - voltage measurement |
active / passive ± 1 V / ± 10 V |
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Measurement accuracy for universal channel |
0,2 % from measurement range |
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Output voltage to suppoly external sensors and devices |
12 V/ 24 V |
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Variants of external connecting devices |
- pressure, displacement, inclination sensor; - tensometric amplifer. |
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Number of temperature measurement channels |
1 |
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Measurement accuracy for temperature channel |
± 0,5 ˚С |
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Supply voltage of the block |
5 V |
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Maximum power consumption |
0,5 W |
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Tensometric amplifer* |
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Operating modes. |
«sensor» / «bridge» |
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Resistance range for strain-gauges usage |
300 Ohm ÷ 1400 Ohm |
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Input signal range |
± 0,4 mV / ± 4 V |
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Output signal range |
± 5 V / 4 ÷ 20 mA |
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* - MC3 tensometric amplifer characteristics are given |
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Leak detection mode |
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Minimum detectable leak rate |
1 l/min |
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Minimum diferential pressure |
3 bar |
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Applicable valve inlet diameter |
2 - 40 inch |
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Leak rate estimation error |
approx. 20 % |
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Inspection time |
ess than 15 min | ||