ULTRASONIC FLAW DETECTORS

accessories applications Dio570 Dio2000 Probes C-Scan X-Ray


 
Overview of DiO 562 versions

TYPE RS232 External
connector
2nd
INPUT
Input for
B-scan
External
pulser
DiO 562 LC x - - - -
DiO 562 HIGH x x - x -
*DiO 562 2CH x - x x -
*DiO 562 2CH HIGH
x x x - -
DiO 562 LF x x - - x


DiO 562 General Features
  Every flaw detector may be used with a single or dual ultrasonic probe for flaw detection and thickness measurements
  The family has several members, the features of which differ according to properties of the material under test (see the overview above)
  The received signal are digitally processed
  Every instrument is equipped with a memory card and be connected to a PC
  Every flaw detector has three gates with alarm facilities
  AVG and DAC curves for flaw size evaluation
  Easy calibration for FBH, SDH and BWE
  Echo height processing as averaging, peak value freezing
  Freeze peak value
  Adjustable time base with zoom, interface triggering
  Analogue filtering for signal/noise ratio for enhancement
  2-D display / B-scan
  Real time clock
  Voice recording
  Recording of all set-up parameters
  Low power mode
  Mains or battery supply
  Attenuation measurement
  3 gates (gate 3 with setup gain)
  Averaging
  FIR filter
  Burst pulser


ACCESSORIES   
  Replaceable rechargeable battery
  External rechargeable battery (optional)
  Battery charger
  RS 232 cable
  BNC-BNC cables (LEMO cables)
  Instrument cover
  Rugged carrying case
Dimensions:
185x130x50 cm

Weight:
2 kg with batteries



DiO 562 LC

This is the common low cost version, which cannot be upgraded.

Specifications:
  Plug-in memory cards (PCMCIA 1MB)
for up to 780 A-scans
  100 AVG diagrams, 100 DAC diagrams
  100 device settings with 6 min. voice recording
  300 device settings without voice recording
  Gain: 20 - 100 dB in 0.1 dB steps
  Frequency range: 0.5 - 20 MHz
  PRF: 20 - 5000 Hz
  Tone burst: 1.0 - 8 MHz
   
  Analogue filters - Wideband, 2.5, 5.0, 4.0 MHz
  Digital filters (FIR): 1, 2.5, 5.0, 4.0 MHz
  Propagation velocity: 1'000 - 10'000 m/sec
  Max. range in steel: 10,5m
  Communication interface: RS 232, (RS 485)
  Digitisation rate: 36 - 256 MHz
  Display: 128 x 256 pixels
  Operating Range: 0”ĘC to +50”ĘC
  Battery operating time: 7 hours (NiMh), 12 hours (LiIon)



DiO 562 HIGH

This version is the very usable because of its possibility to be linked to peripheries by means of a side connector.

Features:
  PRF output    
  External signalisation switch
  external loudspeaker
  External synchronisation
  B-scan indicating the probe position
  Incremental sensor input for coordinate measuring (there is a possibility to switch on a B-scan instrumentation indicating the probe position and distinguishing the motion direction of the hand-held probe)
  Digital programmable outputs for customer applications

The flaw detector may be provided in two versions containing one or two independent channels.

Two or more instruments may be synchronised in two modes: First mode: the both instruments are transmitting ultrasonic pulses simultaneously. Second mode: the pulses are being transmitted alternately, in order that the ultrasonic pulses from one instrument be not disturbed by the other (only two channel models).

An eight-channel multiplexor may be connected (in HW SET-the hardware set-up may be configured in different transmitter-receiver ways, e.g. channel 1 is transmitting and the channel 3 is receiving).

Digital programmable outputs for customer use analogue outputs (gated echo is being set to the voltage 0 till 5V, position of the gated echo).



DiO 562 two channel version

The model DiO 562 2CH is a two-channel ultrasonic flaw detector for manual field inspection as well as for automated scanning. Its use is suited for testing with two independent channels at the same time. There are two independent receivers and two transmitters. The display is divided into two parts for each channel. The gate display: two gates in the first (second) channel. The pitch of tone is distinguishing the gates.


Inputs and outputs of DiO 562 two independent channels



Rail tester

For simple manual rail inspection the DiO 562 is being used with a combined probe.



    A-scans of the both channels together with the appropriate gates are simultaneously displayed on the screen. One example is the application for rail inspection with a combined probe. The other example is testing of hollow railway vehicle axles with boring diameter from 30 to 80 mm (see Fig. 16 and 17).









DiO 562 LF - low frequency version

This DiO 562 version is suited for testing materials with high attenuation of ultrasonic waves, as concrete, plastic materials with enhanced attenuation, constructions and coarse-grained materials in general. The principal feature of this equipment is its low operation frequency from 20 kHz to 1 MHz.

The above mentioned materials are being inspected in transmission methods with separated transmitter and receiver probes. As other examples see the testing of composites, honeycombs and wood.

      



DiO 562 2CH - tester of hollow rail vehicle axles



Assembly for testing hollow railway axles:
  - Head bar with scale and DiO 562 connector
  - Head with two angle probes
The axle testing assembly (Fig. 16) is equipped with a probe head fastened on bar provided with a scale. At one end of the assembly bar is a handle and the DiO 562 connector. At the other end is positioned the probe head, that may be skewed by means of a cardan joint. The assembly bar is equipped with a scale indicating the probe head position.

The probe head is interchangeable because of the necessity using different probe angles from 450 to 700 (2 MHz) according to diameter of the inside boring. The signals of the both channels are displayed simultaneously on the DiO 562 two channel version.