#Safe storage and transport protection (10 & 15 kg)

We would be pleased to arrange appointments for the calibration or repair of your Light Weight Deflectometer by phone +49 3931 25273-20, by E-Mail or via Webseite.

Highly precise test technology from in-house production

Users in more than 100 countries of the world trust the technical innovations from ZORN INSTRUMENTS

For more than seven decades, we have time and again developed and produced new highly precise tools for quality testing in industrial applications. Whether quick tests during road construction or classic material tests in the laboratory. With our combination of inventiveness, excellent craftsmanship and proximity to the customer, we offer appropriate solutions for the continuously changing requirements in the area of quality assurance.


Light Weight Deflectometer used to determine the dynamic deformation modulus Evd
Load-bearing capacity testing in earthworks

ZFG - Light Weight Deflectometer

The Light Weight Deflectometer ZFG for the quick testing of the load-bearing capacity of compacted soils is the flagship of the ZORN INSTRUMENTS range.

The current models ZFG 3.1 and ZFG 3000 are setting standards for the implementation of the so-called "dynamic plate load test" on the construction site. In only two minutes, even inexperienced users can test the quality of the compaction of courses of material applied. Existing soils can also be tested effortlessly for their load-bearing capacity using a ZFG. The usage of the devices is covered by recognised technical standards worldwide, such as the German TP BF-StB, Part B 8.3 or the North American ASTM-E 2835-11.

Your upgrade, also for older ZFG models.

ZORN D plus - the Bluetooth controller for your Lightweight Deflectometer

Do you now do absolutely EVERYTHING with your smartphone? Then connect the ZORN D plus to your ZFG. The ZORN FG mobile app automatically connects your Android or iOS smartphone to the Lightweight Deflectometer via Bluetooth. Undertake measurements as usual, prepare complete test records and send them straightaway by e-mail. Everything in one go. Of course, the app also works on tablets.

The ZORN D plus also determines the air temperature at the test point and warns about the risk of frost. The GPS co-ordinates of the measurement are determined directly on the loading plate. Photographs and information about the soil material tested, the weather or other conditions on the construction site can be added to the record easily.

To the Light Weight Deflectometer

Leight Weight Deflectometer | ZORN D plus

Special design

CNC turning and milling
Here at ZORN INSTRUMENTS, you'll find a high level of innovation and engineering spirit. And that is exactly how we work with you on your project. In close cooperation, we design your workpiece exactly to measure. We manufacture individual prototypes up to small series in our modern machinery consisting of CNC turning and milling machines.

We are happy to take over the design of your components (SolidWorks) or manufacture according to supplied design data. Our employees work at the highest level. Convince yourself.