• Ultrasonic Coating Thickness Gauge

Ultrasonic Coating Thickness Gauge

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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
Measuring principleUltrasonic pulse run-time method
Measuring range / 
Resolution /
No.Measuring rangeResolutionAccuracy
1:356 µm0,25 µm0,25 µm
2:890 µm0,5 µm0,5 µm
3:1.900 µm1 µm1 µm
4:3.900 µm2 µm2 µm
5:7.500 µm4 µm4 µm
(at 2375 m/s ultrasonic velocity in all layers)
Minimum layer thicknessapprox. 10 µm (depending on the ultrasonic
velocity in the layer)
Number of layersup to 5 layers in one operation
Measurement cycle timeapprox. 1 s
Measuring area5 mm Ø / 0.2" Ø
Contact area10 mm Ø / 0.4" Ø
Minimum curvature radius
convex:50 mm / 2"
No. of test series300
Measurement storage250,000
Measurement unitsµm, mm, mils
CalibrationSound velocity calibration for up to 5 layers
StatisticsN (number of measurment values)
Standard deviation
Coefficient of variation
Block statistics (user adjustable)
Trend diagram
InterfaceInfrared (IrDA® 1.0)
optional RS-232 via additional adapter cable
International StandardsDIN EN ISO 2808
Signal processingSensor integrated digital 32-bit signal processing (SIDSP®)
Operating temperature5 °C - 50 °C / 40 ° F - 122 °F
Storage temperature-10 °C - 50 °C / 14 °F - 122 °F
Power Supply4 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