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Pundit Ultrasonic Pulse Velocity Proceq PL 200PE (Pulse Echo)

Deskripsi

Pundit PL-200 / PL-200PE – Ultrasonic Testing

pundit-PL-grid-scanThe
Pundit PL-200 and PL200PE continue the illustrious Pundit tradition
that began in the 1970s. The first to use a new generation touchscreen
display unit. The Touchscreen unit can control conventional Ultrasonic
Pulse Velocity Transducers as the PL-200 and the Pulse Echo Transducer
as the PL200 PE.

The world known Pundit range offers users a reliable and accurate method for determining the sonic properties of materials.

The pulse velocity in a material depends
on its density and its elastic properties. These in turn are related to
the quality and the strength of the material.

Applications

Ultrasonic testing can be used for:

  • The homogeneity of a material
  • The presence of voids, cracks or other internal imperfections or defects
  • Changes in the concrete which may occur with time (i.e. due to the
    cement hydration) or damage from fire, frost or chemical attack
  • The strength or modulus of a material
  • The quality of the concrete in relation to specified standard requirements
  • Single sided thickness measurement
  • Poisson’s ratio and E modulus calculation

Materials

An essential tool for investigating a
wide range of materials. Including Concrete, Ceramics and Refractories,
Timber and many others/

Features

  • Housing specially designed to be used on-site in harsh environments
  • Screen with highest resolution and sharpest image available in the
    market allowing best possible analysis of the measured waveforms
  • Settings directly accessible on measuring screen
  • On board storage and review of waveforms
  • Automatic and manual triggering and user adjustable trigger threshold
  • Gate function on UPE results to focus on critical testing regions.
  • Modular concept: Expandable with all Proceq Pulse Velocity and Pulse
    Echo transducers, upcoming Pundit ultrasonic products will be directly
    compatible.
  • Time based data logging for short term monitoring

Stress Waves

P-S-WavesUltrasonic
testing is sub section of stress wave testing. The main characteristics
of stress waves in a material are their frequency and the type of wave
measured. The correct choice of frequency is based upon the material
being tested. Coarse grained concrete responds better to a lower
frequency. Fine grained mortars or rock works better with higher
frequencies.

The two test methods offered by the
Pundit use of either compression waves [P waves] or shear waves. The
particle motion associated with compression waves can be described as
vibration parallel to the direction of wave travel, much as a sound
wave. The particle motion associated with shear waves can be described
as vibration perpendicular to the direction of wave travel.

Ultrasonic Pulse Echo Method

Pundit-PL-200pe-out-webThe
Pulse Echo technology widely extends the application range of the
Pundit Touchscreen Unit and offers a variety of special features.

  • Single side determination of slab thickness
  • Detection and localization of voids, pipes, cracks (parallel to surface) and honeycombing
  • Advanced echo tracking technology helps identifying the main echo
  • Control buttons and optical feedback directly on the probe increase measurement efficiency
  • Automatic estimation of the Pulse Velocity
  • Easy B-Scan measuring through centre marker and rulers directly on the probe
  • Dry-contact transducer: no couplant required, suited for measuring on rough surfaces
  • Lightweight and ergonomic handling

Pulse Echo Transducer

The Pulse Echo transducer is a shear
wave transducer designed for single-handed and two-handed operation. It
is particularly suited to testing where access is limited to a single
side.

Pundit-PL-200PE-tranducer-detail-web

Scan Modes

PL-200PE-testingB-Scan

A cross-sectional view perpendicular to
the scanning surface is provided. It facilitates the search for pipes,
cracks, voids, etc.
State-of-the-art image processing for improved image quality.
Cursor placement allows a direct readout of the slab thickness and the location of hidden objects or defects.

In this example a B-Scan of a concrete object containing steel pipes.

A-Scan

UPE GateA-Scan allows direct analysis of the raw signal.
Digital filters for better echo visibility and noise suppression.
Automatic readout of slab thickness (Echo tracker).

Area Scan

Contour map of results over a concrete surface, either Velocity or thickness values can be mapped.

A gate function can focus the results in the region of most concern such as reflections from the back of a tunnel grout layer.

Transducer Specifications

Bandwidth 50 kHz
Aperture Size 2 x 25 cm2

Test Subject Limitations

Wavelength 50 mm
Maximum Grain Size 50 mm
Minimum Lateral Depth 2 x Thickness
Penetration Depth 500 mm (up to 1 m ideal)
Minimum object detectable 30 mm cylindrical air pocket

Ultrasonic Pulse Velocity Testing

The Pundit PL-200 system is also fully compatible will all Proceq
Ultrasonic Pulse Velocity Transducers, please view the dedicated Ultrasonic Pulse Velocity testing page for more details. 

Form Supplied

Pundit-PL-200-200PE-unit-webPundit PL200 comes standard with:

  • Pundit Touchscreen
  • 2 Transducers 54 kHz
  • 2 BNC cables 1.5m, BNC Adapter Cable
  • Couplant
  • Calibration Rod
  • Battery Charger, USB cable
  • DVD w. Software, Documentation, Carrying Strap, Case

Pundit PL200PE comes standard with:

  • Pundit Touchscreen
  • Pundit Pulse Echo Transducer incl. cable
  • Contact tester
  • Battery charger, USB cable
  • DVD w. software, Documentation, Carrying Straps, Case

Feature

Specifications

Range0.1-7930 µsResolution0.1 µs (< 793 µs), 1 µs (>793 µs)Display7” Colour, 800 x 480Pulse Voltage100 – 450 VppBandwidth20 – 500 kHzReceiver Gain1X – 10,000X (0-80dB) 11 stepsMemory8 GB Flash memory, storage of up to 100,000 A-ScansBatteryLithium Polymer, 3.6 V. 14.0 AhBattery Lifetime>8h (in standard mode)

Operating Temperature

0o > 30o (Charging, operating)
0o > 40o (Charging, Off)
-10o > 40o (Not Charging)Humidity< 95% RH, non-condensing IP ClassificationIP 54

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