Digital UCI (Ultrasonic Contact Impedance) is a portable tester for measuring the hardness of metals. 

The probe is used for measuring the hardness value of small items, objects with a thin wall, complex form, and to measure the hardness of surface hardened layers. Built-in camera allows user to picture of testing object and mark tested area with corresponding hardness value.

The UCI hardness measuring method complies to ASTM A1038. The ultrasonic contact impedance (UCI) probe is to be used for hardness measurement in the case of sample piece with minimal thickness (from 1 mm). Also objects of complex surface shape, and for measuring surface hardening layer hardness.

This method is very fast and easy: place the probe on the tested object surface, press the probe with the required test force (50N or 10N) to the surface and save the hardness value, shown on the display of the device. Small size diamond indenter allows measuring hardness value of all items, which are thicker than 1 mm.

The UCI method of hardness testing is the least destructive because the hardness tester with UCI probe leaves a smaller imprint than the majority of bench hardness tester would (similar to Vickers indentation size).



  • Contact impedance probe
  • Low test force (10N, 50N or 98N)
  • Small indentation
  • Wide measurement range 
  • User calibration in all hardness scales
  • Large, full colour display
  • Internal memory and PC output
  • Graphical or statistical data 



Hardness Scales   HRC, HB, HV, HRB, HS, HL, MPa
Measuring Range




Tensile strength, MPa: 370~1740





Indenter Diamond
Data Storage  Micro SD memory card slot (card not included)
Display Load applied/contact (UCI), Single test result, Max, Min, Average of tests, Number of tests, Deviation, Var. coeff, Histogram, Signal and
Smart Mode (Filter of incorrect measurements).



Brand yushi

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