Metrological Characteristics

Hardness scale Measurement range; Permissible error Reproducibility
Rockwell "C" scale (20-70) HRC 2 HRC 0,5 HRC
Brinell scale (75-450) 12 1 %
Vickers scale (75-1000) HV 15 HV 1 %
Shore scale (23-102) HSD 3HSD 1 HSD
Leeb scale (200-900) HLD 6HLD 2 HLD
Tensile strength 378-1736 MPa 5% 2 %

Technical Characteristics

Technical parameter Probe type:
ultrasonic dynamic
Measurement principle UCI-method (ultrasonic contact impedance principle) Rebound method (Leeb)
Probe types
D, DSh
Hard-alloy ball diameter - No less than 2,5 mm
Tested surface roughness <Ra 2,5 (for test loads 10 N and 14,7 N)
<Ra 4,5 (for test load 50 N)
<Ra 8,0 (for test load 100 N)
No more than 3,2 Ra
Tested surface radius of curvature >5 mm No less than 10 mm
Sample minimum weight >0,01 kg No less than 3 kg
Sample thickness >1 mm No less than 12 mm
Probe service life No less than 200000 measurements No less than 100000 measurements
Power supply
AC power, V/Hz100-240/50-60
Storage battery1,2V
Consumed power>3,0 VA
Time of full battery charge 8 hours
Battery life
Without light16 h (plastic body)
20 h (aluminum body)
With light5 h (plastic body)
8 h (aluminum body)
From AC networkunlimited
Working temperature -10 +50
Temperature during storage and transportation -35+60
Operating conditions Relative humidity 3080%
Overall dimensions
Electronic module -UD 1808042 mm
Probe U10, U15, U50, U10016025 mm
Probe U15Sh, U50Sh8040 mm
Probe D14025 mm
Probe DSh8025 mm
Hardness tester mass
(module with probe)
Hardness tester -UD: 0,9 kg
Measurement results processing Calculation of mean value, deletion of current measurement, date storage, archive work.
Display light Available
Display peculiarities Hardness scale, measured value, number of measurements, operation mode, number in archive, battery discharge level, automatic switch-off in 150 sec.
Memory (archive) 99 readings stored during power-off
Internal software "-UD" Available. Enables to work with hardness tester without connection to PC.
External software "" Available. Transfers data from hardness tester archive to PC. Enables to process measurement data, create data bases, construct graphs, print results.
Time of one measurement2 s1 s

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