Optical rebound hammer — Silver Schmidt OS8200

Concrete strength and uniformity evaluation using patented optical rebound hammer technology

Schmidt hammers by Proceq, the inventor of rebound hammer technology, have long been the global benchmark for non-destructive compressive strength estimation. Silver Schmidt OS8200 is as accurate, reliable, and versatile as ever — and now, connected, thanks to its optical measurement technology paired with digital productivity features and user-friendly mobile apps.

Our patented optical technology delivers compressive strength measurements with a higher range and far lower dispersion than any classical rebound hammer; and our versatile connectivity increases operator productivity and makes instantaneous reporting possible, from anywhere, anytime.


Digital versatility

Silver Schmidt OS8200 live works as:

  • Connected digital hammer with instantaneous reporting and data sharing thanks to a user-friendly mobile app (Apple® iOS or Android™)
  • Stand-alone digital hammer with automatic calculation of the rebound value.
  • Digital hammer wirelessly connected to a Bluetooth printer for direct print-out of test results

Silver Schmidt accuracy

The Q-value brings greater accuracy at higher strengths.

Independent testing by the German Committee for Structural Concrete and the Bundesanstalt für Materialforschung und Prüfung (BAM) has consistently demonstrated that the Q-value featured in Silver Schmidt OS8200 is much better suited for working with high strength concrete. Furthermore, similar studies carried out in Germany, China and Japan have proven that the Q-value delivers tighter, more accurate correlations for custom material curves.


Original Schmidt Live mobile app

Flexibility for all applications
Correlation to custom materials in accordance with major standards
Apply user defined corrections for carbonation, form factors, etc.

Compliance to standards
Select standard units and form factors
Hammer verification management according to requirements of major standards
Automated EN13791 test region screening test report

Collaboration and reporting
Visual report generation using lists, bar charts and statistics
Single and multiple series export in PDF or CSV format
Logbook annotations for full traceability (geolocation, text, images, voice)

Your Benefits

-Strength estimation at a fraction of the cost and lead time, and without the mess of coring

-Best-in-class strength correlation

-Applicable from fresh to high strength concrete

-Instant report generation on the go

-Long service intervals

Combination With Other Methods Ultrasonic pulse velocity (SONREB) with Pundit 200
Impact Energy 2.207 Nm (N), 0.735 Nm (L)
10 to >100 N/mm2 (1’450 to >14’500 psi)
L-hammer with optional mushroom plunger: 5 to 10 MPa (725 to 1’450 psi)
  • Fresh concrete strength estimation
  • Normal concrete strength estimation
  • High strength concrete strength estimation
  • Concrete uniformity testing
  • Custom correlation to compressive strength
  • Low strength (<5 Mpa) concrete testing
  • In-situ rock testing on massive rock (Type N)
  • Concrete testing on thin (less than 100 mm thick) samples (Type L)
  • Rock testing on cores according to ASTM D5873 (Type L)
  • Hardness testing of paper rolls (Type L)
  • Compressive strength estimation; concrete: 10 to 70 N/mm2/ 1450 to 10152 psi (Type N)
  • Screening of concrete to identify coring locations (Type N)
  • Uniformity testing of concrete (Type N)
  • Paper: Type L

Instrument Firmware

Automatic calculation of rebound value according to international standards


Any compatible Apple® iOS device (please see App Store for details)


Instrument memory > 20’000 impacts, Display memory – Memory of iOS or Android device


Low energy bluetooth, USB for charging and updates


Impact angle independent
Displays the series on-screen as you work
Series validity checked automatically
Review an entire series
Delete impacts
Test region reporting
Select units, form factor and correlation curves
Create your own custom curves
Create custom curves databases for your own mixes

Report Generation

Single, multiple series, test region (uniformity, EN13791)


English, German, Japanese, Chinese, Korean, Spanish, Portuguese, Italian, French, Russian


Standard AAA, alkaline or rechargeable

Battery Lifetime

> 20’000 impacts between charges

Operating Temperature

0° to 50°C



Measurement Accessories Mushroom plunger (341 90 005)
Verification Tools SilverSchmidt Live Premium Calibration Certificate (xxx xx xxx)
Verification tracking with the Schmidt Live app
SilverSchmidt testing anvil (341 10 400)
Portable testing anvil OS8200 N/L complete 34101401
Popular Accessories Bluetooth printer set (340 01 067)
More Accessories Registration paper for Bluetooth printer (Set of 5 rolls) (340 01 054S)

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