Ultrasonic Thickness Gauge

The light and compact ultrasonic wall thickness gauge SONOWALL 50 enables the precise measurement of the wall thickness of components made of metal, glass, ceramics, and plastics. This efficient ultrasonic device allows the measurement of materials with both flat and curved surfaces. The wall thickness gauge enables the quick and simple detection of the first signs of wear and corrosion, for example, on ships, storage tanks, pipelines and cranes etc.

Advantages at Glance

  • Stable measurement output
  • Integrated data logger
  • Integrated calibration block


  • Ultrasonic thickness measurements on flat surfaces

  • Easy ultrasonic thickness measurements on curved surfaces due to dual function probe

  • Easy calibration with integrated calibration block


Highly accurate wall thickness measurement on flat and curved surfaces

The SONOWALL 50 features a highly accurate data read out and a large measurement range. An integrated data logger and its user-friendly operation make the device ready for a wide variety of applications. The included software is a convenient tool to store and evaluate the measurements.

The SONOSCAN Probe SW 5-22  for the SONOWALL 50 has been specifically designed for the measurement of wall thicknesses of pipes with small diameters. The integrated guidance system guarantees the stable coupling at curved pipe surfaces.



Quickly change between curved and flat top surface


More Ultrasonic Probes

  • SW5-21 (0.8 mm ... 250 mm in steel)
  • SW5-22 (0.8 mm ... 250 mm in steel)
  • SW2-21 (6 mm ... 400 mm in steel)
  • SW2-23 for thick plastics and composites (Measuring range depending on material)

General Data

Measurement Range0.8 mm ... 400 mm in steel (depending on type of ultrasonic probe)
Sound Velocity1 000 m/s to 10 000 m/s
Resolution0.01 mm (0.001 ")
Ambient Temperature-10 °C ... +50 °C
Storage Temperature-20 °C ... +50 °C
DisplayIlluminated display (128 px x 64 px)
Test BlockStainless steel (9 mm), integrated Connections
Power Supply2 x LR6 I AA - primary cell
Operating Time40 hours (without light)
Data LoggerMax. 10 000 readings
Dimensions (L x W x H)128 mm x 80 mm x 28 mm (manufacturer independent)
Weight260 g
Protection ClassGauge: IP65 Probe: IP67
Protection Classs2 independant gates (including automatic positioning) Gate 3+4 only available in multilayer mode
SoftwareFor convenient evaluation of the measurement results