Extech TKG250 Specifications

Ultrasonic
Thickness Gauges

Extech offers Thickness Gauges designed in compact,
handheld, rugged housing ideal for field use. The
ultrasonic technology allows for non-destructive
thickness measurements for primarily steel structures.
Select models with digital thickness readout or live
color waveform and datalogging function.

Applications:

- Boiler Tubes

- Pressure Vessels

- Storage Tanks

- Ship Hulls

Common Features

• Wide measurement range:

5MHz probe: 0.040" to 20" of steel

10MHz probe: 0.020” to 20" of steel (optional)

• Sunlight readable dot-matrix display with backlight

• Multiple transducer options for high temperature

and difficult to measure materials

• Fast minimum feature to capture minimum thicknesses

• On screen display of 8 languages

• Splash-proof (IP54), high impact, compact housing

Model TKG100 & TK150 Additional Feature

• Sun light readable

Model TKG150 Additional Features

• Echo to Echo option to reduce coating errors

• 100K internal datalogger with export to Excel

• B-scan (visual cross section of test piece)

• Vibrate on alarm

- Containers

- Home Oil Tanks

- Pipes

- Steam Lines

- Compressors

- Shafts

- Bridge Pins

- Bond Inspection

Transducer

TKG100

TKG250

TKG150

Model TKG250 Additional Features

• Color LCD display shows red, yellow and

green visual alarm indication

• Live Waveform (A-scan for thickness verification)

• File compare feature as a real time corrosion monitor

• Dynamic change of waveform color on alarm

• Grid review of saved readings

• Echo to Echo option to ignore coatings

• 100K internal datalogger with export to Excel

• B-scan (visual cross section of test piece)

• Vibrating alarm indication

Specifications on back page

Ordering

PRODUCT DATASHEETPRODUCT DATASHEET

TKG100 ............. Digital Ultrasonic Thickness Gauge

TKG150 ............. Digital Ultrasonic Thickness Gauge/Datalogger

TKG250 ............. Color Waveform Ultrasonic Thickness Gauge/Datalogger

For replacement accessories and 10MHz transducer, please contact us.

Specifications subject to change without notice. Copyright © 2013-2014 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form.
Rev. 6/17/14

www.extech.com

TKG250 Color Screen displays

Alarm Warning Screen

Normal Screen - No Alarm

B-Scan Screen

Change color on Alarm

All models include 2oz bottle of couplant, 2 AA batteries,
Transducer (5MHz, 0.375" diameter ) with potted cable, and
hard case, plus a certificate of calibration to NIST. TKG150 and
TKG250 also include protective holster, USB cable, and Extech
XPorter software.

Differential Screen

Common Functions Description

Thickness Range (in Steel) 5MHz probe: 0.040 to 20" (1.0 to 508mm); 10MHz probe: 0.020 to 20" (0.50 to 508mm)

Material velocity
calibration range

Languages English, French, Spanish, Italian, Czech, German, Portuguese, Slovak, Finnish, and Hungarian

Hold Mode Holds display to retain last thickness reading with reverse video display

Freeze Mode Freezes display (ideal for high temperature readings)

Fast Min/Max Mode Displays Min or Max and actual thickness value at 20 measurements/sec

Units Inches/Millimeters/Microseconds

Alarms Audible beeping; illuminae flashing display and keypad; and vibration feedback (only on the TKG150/TKG250 models)

Illuminating Keypad F1 = Red, F2 = Yellow, F3 = Green for easy, go/no-go testing

Additional Functions

Gain - Variable adjustment — Low, Standard, High In 1dB steps from 20-90dB or Automatic Gain Control (AGC) for waveform

B-Scan - Displays a cross
section of the test piece

Echo to Echo — Measure the metal thickness only (paint & coatings do not affect base material thickness value)

Differential Mode — Displays the difference from the actual thickness measurement and a user entered reference value

Velocity Mode — Displays acoustic sound speed to measure thickness of unknown materials

Datalogger —

Range — —

Rectification Modes — — RF, Half Wave Positive, Half Wave Negative and Full Wave Rectification

Live Waveform (A-Scan) — —

Battery Life

RF Waveform Screen

0.200 to 0.7362 in/μS (0.508 to 18.699mm/μS)

Model TKG100 Model TKG150 Model TKG250

—

Up to 50 hrs

(20hrs w/backlighting)

Displays a visual cross section of inspection area with no correlation to distance. B-Scan alarm
colors consist of: Red = below minimum/above maximum; Yellow = Caution; and Green = Good.

Stores 50k readings (expandable to 100k) and 5,000 waveforms; file names up to 20 characters
long; and the included Extech XPorter software extracts .csv data files that can be opened for
viewing in MS Excel, Notepad, or Wordpad. TKG250 also has file compare & grid review features.

Adjustment of manual range control or auto zoom tracking to center
echoes independent of selected range

Full adjustments for gain in 1dB step or AGC, main bang blank, blank after
first received echo, range including zoom auto tracking to center echoes
independent of material and rectification

Up to 50 hrs

(20hrs w/backlighting)

8 to 14hrs (depends on operating conditions)

Specifications subject to change without notice. Copyright © 2013-2014 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form.

www.extech.com