VD-ОKО-01 universal eddy-current flaw detector

VD-ОKО-01 Purpose

VD-ОKО-01 universal multi-channel eddy current flaw detector is intended for solving a wide range of eddy current flaw detection tasks in such branches of industry as:

• AIRCRAFT
  testing of aeronautical engineering parts (wheel disks, skin, turbine blades, multilayered constructions etc.);
• RAIL TRANSPORT
  testing of rail components and car units (parts of wheel pair and axlebox unit, load trolleys, refrigerated carriages and coaches, automatic coupler etc.);
• OIL-AND-GAS
  testing of pipelines, pressure vessels etc.;
• CHEMICAL
  testing of pipelines, industrial vessels etc.;
• POWER
  testing of steam generator pipes by I/D ECP, collectors etc.;
• ENGINEERING
  testing of rods, wire, metalwares, forming rolls, sheet metals, metal parts of bearing structures etc.

FLAW DETECTOR ADVANTAGES

• high efficiency due to flaw detector multi-channeling;
• possibility of flaw detector application during mechanized and automated testing execution;
• exclusion of human factor influence (if it is used as a part of mechanized testing system);
• possibility of the evaluation of defect depth and length, and also LED and sound flaw alarm;
• operation simplicity due to the intuitive interface;
• registration of all testing results and extended capacities of data analysis.

DISTINCTIVE FEATURES OF THE FLAW DETECTOR

• large color high-contrast TFT display;
• ALARM system: 4 three-color LEDs, sound alarm;
• various scanning units manipulation;
• USB slave;
• possibility of up to two encoders connection;
• possibility of software application for different testing tasks: testing of pipe bodies, rolled metals, wheel pairs, rods and wires etc.

TECHNICAL SPECIFICATION AND SERVICE FUNCTIONS OF THE INSTRUMENT

• flaw detector sensitivity threshold on artificial defects, such as "slit" on the calibration block: length – 2 mm; depth – 0,05 mm; opening –  from 0,02 mm;
• operating frequency setup range – from 50 Hz to 2 МHz;
• generator output voltage (double amplitude) – from 0,5 V to 16 V;
• adjusted gain range – 52 dB;
• digital filtering, 3 filter types: Bandpass, Differential, Averaging;
• electronic instrument duct consists of 1 physical channel with possible multiplexing using outer commutators;
•  possibility of 4 multiplex units connection;
•  connection of up to 32 channels to one multiplex unit;
• external synchronization;
• LED (4 LEDs) and sound flaw alarm;
• automatic (phase) tuning out from the influence of operating gap and inhomogeneity of electromagnetic properties of the testing object;
• possibility of connection and operation of ECP of the following types:
• differential ECP;
• differential ECP connected according to the bridge scheme;
• differential transformer ECP with grounded centerpoint;
• differential transformer ECP;
• absolute (parametric) ECP;
• absolute transformer ECP.
• eddy current signal display in various views:
• display of 4 areas on one page;
• MULTY mode – band charts each of which corresponds to a specific channel are displayed in one area;
• complex plane (XY) – allow to detect defects among interferences by analyzing the signal form;
• 2D- mode of two-dimensional defect display;
• bar diagram (BAR).

• time of flaw detector operation mode setup – up to 1 minute;
• storing of instruments setups and testing results on compact-flash memory card;
• mode of two-way connection with PC via USB port (for inputting the information from the flaw detector memory into PC and possibility of this data printing as well as setups loading from PC into the flaw detector memory);
• encoder connection option;
• four independent frames of automatic flaw alarm (ALARM) for each display area;
• evaluation of defect depth and length;
• channels mixing option;
• possibility of signal display color selection for each channel and channels mix separately;
• autozap function;
• built-in clock and calendar;
• screen backlight;
• screen brightness control;
• reception path overload check;
• check of flaw detector memory fill;
• storage battery discharge level indication;
• friendly multi-language interface;
• time of continuous flaw detector operation with the fully charged storage battery –  at least 8 hours;
• flaw detector is powered from the following sources:
• EPU with rated voltage of 12 V and rated capacity of 9 А×h;
• AC mains with voltage from 187 V to 242 V, with frequency (50 ± 1) Hz.

PERFORMED CONFIGURATIONS

By creating special scanners for VD-ОKО-01 instrument, it is possible to solve effectively the flaw detection tasks of metal units and parts in various branches of industry. As a result, VD-ОKО-01 flaw detector complete with scanners is a universal mechanized complex of non-destructive testing.

Today, VD-ОKО-02 eddy current flaw detector, together with scanners, solves the following tasks of eddy current flaw detection:

Testing of pipelines and sheet products The series of VD-SCANNER multi-channel scanners on the basis of VD-ОKО-01 flaw detector is intended for carrying out mechanized eddy current testing of radial surfaces with different curvature radii in order to detect surface defects, such as longitudinal and transverse cracks, folds, scabs etc.
Production crack of 0,76 mm in depth and up to 60 mm in length detected during straight-line-seam pipe testing	Execution of main pipe body testing using VD-ОKО-01 flaw detector complete with VD-SCANNER 028-mm channel scanner enabled to evaluate the pipe damage rate and its further operability
Testing of fillet transitions and radial surfaces SKV-GP scanners family is intended for performing 100% mechanized testing of fillet transitions with various curvature radii on radial surfaces.
Signal from crack on the fillet transition with radius of 25 mm and depth of 0,54 mm detected during field inspection of forming roll	Carrying out of 100% eddy current testing of forming rolls using VD-ОKО-01 flaw detector and special scanning units allows to evaluate the damage rate of both roll working surface and fillet transitions