Marmonix MUT-520S Ultrasonic Wall Thickness Meter

The Marmonix MUT-520S is a digital ultrasonic thickness gauge for non-destructive wall-thickness checks on metals and other ultrasonically conductive materials. A rugged metal shell, dual probes (standard and angle), integrated 4 mm calibration block, velocity measurement, and PC connectivity make it a practical tool for corrosion surveys, fabrication QC, and maintenance rounds.

Measuring range is typically 0.75–350 mm (depends on probe), with 0.01 mm resolution and accuracy ±(0.5%H + 0.01). Store up to 2000 groups and review data on a PC. Compare related instruments in the thickness testers category. For coating/film measurement (a different NDT need), see our coating thickness gauges buyer’s guide.

Highlights

• Metal housing for industrial environments
• Standard + angle probes for access flexibility
• Built-in 4 mm calibration block
• Sound velocity 1000–9999 m/s; velocity measurement mode
• mm / in units · coupling-state indication
• 2000-group memory · PC software for transfer/analysis
• Operating temperature –10 °C to 60 °C · 2 × AA power

MARMONIX MUT-520S Ultrasonic Thickness Gauge Specification

Materials & use cases

Works with ultrasonically conductive materials such as steel, cast iron, aluminium, copper, many plastics, ceramics, composites, epoxies, and glass (verify probe and velocity settings per material).

• Corrosion / remaining wall — pipes, tanks, pressure vessels
• Fabrication QC — plate and casting thickness verification
• Maintenance — wear checks on machinery housings and liners
• Incoming inspection — confirm supplied stock against drawing thickness

What’s typically included

• MUT-520S main unit
• Ultrasonic probe(s) as supplied for the kit
• Couplant
• 2 × AA batteries
• Carrying case and documentation (confirm packing list on order)