Remote detection of vibrations from distant structures
VibroFlex Range is the outdoor-proof long-range vibration measurement solution designed for remote analysis of vibrating structures, model validation and health monitoring on large and distant structures from more than 500 m. The laser sensor conveniently monitors structural dynamics and stability of buildings, operating machinery and critical production facilities, providing a fast and efficient on-site testing solution. The determined Eigen frequencies and deflections can be used for example for health monitoring or model validation of simulations.
5 key facts for reliable long range vibration measurement
Experience the next level of condition monitoring with long‑range vibration measurement beyond 500 meters. This video showcases
- how to identify measurement points even over long distances
- how to achieve reliable measurements in bright daylight conditions
- how the patented coaxial design and QTec® technology enable sub-micrometer resolution
Learn how advanced long‑range vibration measurement is redefining condition monitoring, and use the form to request more information or ask any open questions. Our experts are happy to support you - so you can measure what matters.
Highlights
//- Remote vibration analysis > 500 m with laser precision
- SWIR laser and QTec® for best SNR
- Measures on all surfaces, even corroded and dirty structures
- Remote access to distant and hazardous areas
- True zero Hz performance for precise determination of natural frequencies
- Easy setup in minutes avoids sample cabling and surface preparation
- Patented coaxial HD camera for precise targeting
- Robust and outdoor-proof sensor (IP63)
Just point and measure
Simply mount the sensor head on the rigid tripod, use the geared head and fine adjustment to precisely position the laser beam on the exact feature of the object being examined by using the scope and the parallax-free high resolution camera image with reticle. Then start your measurement. With the VibSoft data acquisition software, you can immediately evaluate your test data anywhere – in the field or on-site.
Vibration measurement and condition monitoring
VibroFlex Range is the dedicated tool for high-resolution remote condition testing of displacement, velocity and acceleration avoiding tedious contact sensor installation and cabling.

Typical applications range from infrastructure over buildings to industrial and heavy machinery:
- Bridges, buildings and support structures
- In-service tubes and pipes for leaks
- Mining machinery even with dirty surfaces
- Furnace structures, piping or other hot objects
- Machinery and industrial installations in danger zones (explosive risk, high voltage, high temperature)
- Power poles, power lines, electrical equipment
- Historic buildings under monument protection





Patented QTec® powerful on all surfaces
Always stable signal, 20 dB better SNR for faster and clearer results without post-processing: QTec® laser vibrometers use multi-path interferometry and reception diversity for recombining the best readings from different perspectives for faster and more consistent results while avoiding the need for averaging. This safe laser technology is perfect for challenging applications such as NDT, biomedical, long distance displacement measurements, quasi-static displacement measurement and shaker feedback control. The patented and highly innovative technology QTec® makes vibration measurements faster, easier and more reliable than ever - for the most robust, unambiguous results.



Get in touch with our experts
Get in touch with our experts
Let’s talk! We will find the right solution for your needs.
Technical data
| Property | Value |
|---|---|
| Max. frequency bandwidth | DC – 32 MHz (Connect+) |
| Measurands | Velocity, Displacement, Acceleration |
| Max. vibration velocity | ±30 m/s |
| Velocity ranges | ±1 mm/s – ±30 m/s |
| Best velocity resolution | 4 nm/s/√Hz |
| Best displacement resolution | < 230 fm/√Hz |
| Max. acceleration | 100.000 km/s² |
| Signal processing | FPGA-based |
| Property | Value |
|---|---|
| Optical design | QTec® Multi-Path interferometer |
| Measuring laser | 1550 nm (SWIR, invisible IR) |
| Measuring laser power | < 1 0 mW |
| Pilot laser (target beam) | 520nm, green |
| Laser safety class | Class 2 |
| Working distance | 5m .. > 500 m |
| Focusing | Manual |
| Integrated camera | Full HD 1920×1080 px (coaxial) |
All outputs via Frontend Connect+
| Property | Value |
|---|---|
| Operating temperature | 0 ... +40 °C |
| Relative humidity | max. 80 %, non-condensing |
| Protection class | IP63 |
| Power consumption | approx. < 20 W |
| Weight | 8.7 kg |
| Dimensions (L x W x H) | 435 x 171 x 175 mm |
Click here to view the technical features of the Connect+ frontend
Downloads
Related products
VibroFlex
- Modular system for optical vibration measurement up to 32 MHz
- Flexible setup: microscope objectives for tiny structures or measurement of large objects from a safe distance
- Ideal for R&D (faster time-to-market) and reliable in-line inspection
- QTec® multi-path interferometry: stable signal level, 20 dB better SNR, faster and clearer results without post-processing


VibroFlex Connect+
The Brain behind the measurement. Experience latest-generation FPGA signal processing. The Connect+ front-end decodes raw data into precise displacement, velocity, and acceleration with touch-free WiFi control.

VibroFlex QTec
The VibroFlex QTec sensor head delivers the highest optical sensitivity, enabling high-fidelity measurements where conventional sensors fail. Whether on dark, biological, rotating, or moving objects: This safe laser technology ensures faster, easier, and more reliable vibration analysis—for the most robust, unambiguous results in NDT, biomedical, and shaker feedback control.

VibSoft
VibSoft is a comprehensive and easy-to-use software package for vibration data acquisition and analysis. VibSoft closes the gap between raw signal acquisition and profound analysis of vibration measurement data, offering optimum performance with laser vibrometers.

VibroGo
VibroGo® is the truly portable, battery powered digital laser vibrometer for field studies and quick and easy condition monitoring of machines and facilities on the go. It allows the non-contact measurement of vibrational displacement, velocity and acceleration up to 320 kHz and from safe distances up to 30 m. Integrated on-board data recording, live monitoring and quick analysis of measurement data make VibroGo® more autonomous than ever before.

No budget? Just measure.
Whether you need contract measurements, equipment rental, or leasing, our scalable services deliver precise data—without the overhead of major investments. Ideal for short-term projects, occasional use, or limited budgets.
With PolyFlex you get results without compromising timelines or budgets.




