QuintSonic 7

Ultrasonic coating thickness gauge QuintSonic 7

Precision coating thickness gauge based on the ultrasonic pulse run-time method.

The QuintSonic 7 enables measurement of up to 5 coatings in a single operation.

It is possible also to measure polymer coatings like paints, varnishes and synthetic materials as well as glass, ceramic or metallic coatings on virtually any substrate. Varnish on synthetic materials, copper on ceramic, synthetic materials on wood, or glass on metal form the typical coating systems that can be measured by the QuintSonic 7.

As the first equipment of its sort, the QuintSonic 7 makes it possible to measure coatings on fibre-reinforced plastics, e.g. GFRP, CFRP, WPC.

The intelligent evaluation of the ultrasonic signal reading allows rapid recording of measured values of over 40 measurements per minute.

Simple calibration and graphic display of the test results on the A screen of QuintSonic 7 enables quick operability and versatile use.


Non-destructive measurement of:

  • Varnish, synthetic materials, glass, enamel and other coatings on wood, synthetic materials, glass, metal and ceramic
  • Metal coatings on synthetic materials, ceramic and wood
  • Up to 5 coatings in a single operation.

Also suited for wall thickness measurement.

Performance features

  • Quick evaluation of the measuring signal, high accuracy and repeatability owing to the sensor-integrated digital 32-bit signal processing  (SIDSP®)
  • Over 40 measuring values per minute: start, wait for 1 second, done.
  • Mere 5 mm measuring area enables gathering measurement on tiny and curved parts
  • Graphic display showing individual coatings, zoom-enabled A screen and menu-driven user guidance

Scope of delivery

  • QuintSonic 7 basic unit
  • Ultrasonic sensor with 1 m / 40" sensor cable
  • USB-Adapter cable
  • Software QSoft 7 Basic Edition on CD
  • Operating manual German / English on CD
  • 1 bottle glycerine couplant, 100 ml
  • 1 bottle coupling gel by ElektroPhysik, 100 ml
  • 4 batteries AA / LR06
  • Plastic carrying case
Property Value
Measuring principle Ultrasonic pulse run-time method
Measuring range /
Resolution /
No. Measuring range Resolution Accuracy
1: 356 µm
0,25 µm 0,25 µm
2: 890 µm
0,5 µm 0,5 µm
3: 1.900 µm
1 µm 1 µm
4: 3.900 µm
2 µm 2 µm
5: 7.500 µm
4 µm 4 µm
(at 2375 m/s ultrasonic velocity in all layers)
Minimum layer thickness
approx. 10 µm (depending on the ultrasonic
velocity in the layer)
Number of layers
up to 5 layers in one operation
Measurement cycle time
approx. 1 s
Measuring area
5 mm Ø / 0.2" Ø
Contact area
10 mm Ø / 0.4" Ø
Minimum curvature radius
convex: 50 mm / 2"
concave: -
No. of test series
Measurement storage
Measurement units
µm, mm, mils
Calibration Sound velocity calibration for up to 5 layers
Statistics N (number of measurment values)
Standard deviation
Coefficient of variation
Block statistics (user adjustable)
Trend diagram
Infrared (IrDA® 1.0)
optional RS-232 via additional adapter cable
International Standards DIN EN ISO 2808
Signal processing Sensor integrated digital 32-bit signal processing (SIDSP®)
Operating temperature
5 °C - 50 °C / 40 ° F - 122 °F
Storage temperature
-10 °C - 50 °C / 14 °F - 122 °F
Power Supply
4 x Mignon battery AA / LR06
Power supply (90 - 240V AC / 48 - 62 Hz)
Gauge: 153 mm x 89 mm x 32 mm / 6" x 3.5" x 1.3"
Sensor: Ø 25 mm x 60 mm / Ø 1" x 2.4"
Gauge: 310 g / 10.8 oz
Sensor: 80 g / 2.8 oz
Cable: 30 g / 1 oz

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Need technical advice?

You are working with a manufacturing process requiring special measuring methods and tools? It will be our pleasure to advise you on possible solutions!
Please feel free to contact us on:

Phone: +49 221 75204-0
Fax: +49 221 75204-67
Mail: info(at)elektrophysik.com

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