Light Weight Deflectometer

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Asphalt Tester

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 been developing and producing new, high-precision tools for quality testing in industrial applications. Whether quick tests in road construction or classic material tests in the laboratory. With our combination of inventiveness, craftsmanship excellence and customer proximity, we offer suitable solutions for the constantly changing requirements in the field of quality assurance.

Light Weight Deflectometer used to determine the dynamic deformation modulus Evd

Dynamic plate load test

The ZFG Light Weight Deflectometer (LWD) is ideal for rapid testing of the bearing capacity of compacted soils.

The current ZFG 3.1 and ZFG 3000 models set standards for carrying out the so-called "dynamic plate load test" on the construction site. In just two minutes, even inexperienced users can reliably test the compaction quality of installed material layers. The load-bearing capacity of existing soils can also be tested effortlessly with a ZORN Light Weight Deflectometer. The use of the devices is backed up worldwide by recognized technical standards such as the German TP BF-StB, Part B 8.3 or the North American ASTM-E 2835-11.

ZORN D plus - Upgrade for older ZFG models

The Bluetooth control for your ZFG (LWD)

You really do EVERYTHING with your smartphone by now? Then connect the ZORN D plus to your "old" ZFG. The D plus app automatically connects your Android or iOS smartphone to the Light Weight deflectometer via Bluetooth. Perform measurements as usual, create full-fledged test reports and send them right away via eMail. All in one go. Also works with tablets, of course.

The ZORN D plus additionally determines the air temperature at the test point and warns in case of danger of frost. GPS coordinates of the measurement are determined directly on the load plate. Photos and information on the tested soil material, the weather or other conditions on the construction site can be easily added to the report.


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 according to ISO 9001.

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.