Falling Weight Devices: Inspection, Calibration & Maintenance

Carl Hamm Geotechnik services and calibrates light and medium-weight falling weight devices from ZORN and HMP at our conveniently located facility in North Rhine-Westphalia.

Calibration is required by technical testing regulations and is often a prerequisite for participation in tenders. Calibration is carried out in accordance with TP BF-StB Part B 8.4 as specified by the German Federal Highway Research Institute (BASt). Successful inspection is documented by a certificate and an inspection label.

Calibration at our facility includes a thorough inspection and, where necessary, repair of your equipment to ensure the continued precision and reliability of your falling weight devices. All components, from mechanical parts to electronics, are carefully checked.

For Carl Hamm probing equipment, we have a dedicated test bench for verifying the actual impact energy of the devices. This test enables more accurate calculations of the values you have measured. It also allows you to demonstrate that your equipment accurately reflects the actual soil conditions.

  • Verification of the actual impact energy
  • Determination of the correction factor for recalculating your measured values
  • Provision of a test report for documentation purposes

Regular inspection of your testing and measuring equipment helps ensure accuracy and preserve the value of your investment.

For the duration of the inspection, we can provide our customers with replacement devices from ZORN and HMP, subject to availability.

Carl Hamm Geotechnik Calibration

Röhrenwerk Kupferdreh Carl Hamm GmbH
Katrin Newetzki
Gasstraße 12
45257 Essen
Deutschland

Tel +49 (0) 2 01 / 8 48 17 – 66
Fax +49 (0) 2 01 / 8 48 17 – 80

E-Mail: kalibrierung@carl-hamm.com
Web: www.carlhamm-geotechnik.de

Recognition as a Calibration Laboratory

The recognition of Röhrenwerk Kupferdreh Carl Hamm GmbH as a calibration laboratory for light and medium-weight falling weight devices was renewed by the Federal Highway Research Institute (BASt) on January 15, 2026, for a further five years.

About the certificate >>