OI Catalog - Olson Instruments, Inc.

nondestructive testing platforms
Concrete NDE 360 Thickness » One Platform Gauges -(CTG) Multiple » Standard NDE Tests Models
The CTG line of instruments are handheld, battery powered, nondestructive systems for measuring
the thickness and integrity of concrete slabs, pavements, tunnel linings, walls and other
plate-like structures using the Impact Echo (IE) principle.
Concrete Thickness/Flaw Gauges are
dedicated platforms designed to test concrete
thickness in straightforward situations that involve
simple structures like slabs, pipes, or walls. All models
include a telescoping pole for overhead or flatwork.
Perform over 60 CTG tests in an hour on-site, without the
need to core, drill, or excavate! Save time and money using
Olson’s CTG Thickness/Flaw Gauges — see our Impact
Echo section (see page 24) for more information about the
methodology. To receive a brochure on the CTG product
line, email info@OlsonInstruments.com, or call 303.423.1212.
Standard Model
Impact Echo Test Head
CTG-1TF (Thickness/Flaw Model)
Specifications
»» Standard Thickness Range: 3.2" to 6 ft (81 mm to 1.8 m -
Normal solenoid mode to thick hammer mode
CTG Test Gauge
Features:
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Ruggedized, handheld test head with integrated displacement
transducer and solenoid impactor
No coupling agents required for use of test head on concrete
Works on cured, hardened concrete in air or on grade
Works through thin, bonded paint and most types of bonded
tile – checks tile bonding too
Easy to read transflective LCD display for outdoors and
switchable backlight for indoors
Switch between English (inches) or Metric
(centimeters) units with the click of a button
Easy velocity calibration at known thickness location,
or use Olson’s default parameters
Download test time/date and results into your PC through
serial port (serial cable and serial/USB cable)
Thickness data table can be imported into popular
spreadsheet programs
Outputs thickness summary tables and data for postprocessing
on a Windows PC using WinIE software
»»Accuracy:
± 2% at high resolution when IE velocity is
calibrated on a known thickness
»»Report Capability:
Numerical thickness summary table
downloadable to spreadsheet
Raw data downloadable to PC/Notebook for flaw
analyses using Olson’s Windows based WinIE software
and thickness summary table
»»Power:
Internal rechargeable NiMH battery pack
(~ 6-7 hrs of operation per charge), external battery
charger (AC power unit, overnight charging), can use
10 - AA size alkaline batteries or run on the AC power unit
»» Learning Curve: Less than 10 minutes for thickness
measurements!
»»Frequency Resolution: 44.5 Hz (high) or 89 Hz (low)
»»Number of Samples Acquired Per Test:
256 (normal) or 512 (high resolution with zero padding)
»»Processing Time for 1 Test: ~ 3 seconds
»»Sampling Rates: 45,600 samples/s (normal), 14,400
samples/s (thick), and 116,000 samples/s (super thin)
»»Maximum Signal Frequency: 22,800 Hz (normal),
7,200 Hz (thick), and 58,000 Hz (super thin)
»» Weight: 4.4 lbs (2.0 kg) combined for test head and gauge
»»Cable Length for Test Head: 6 ft (1.8 m)
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