Support Reference Profiler

Z-250 Reference Profiler

Developed to measure high accuracy reference profiles

The ROMDAS Z-250 Reference Profiler measures high accuracy reference profiles of the road surface. The linear elevation profiles are then analysed using industry standard algorithms to determine the road roughness in terms of IRI (m/km).

This Class 1 surface profiler is highly portable, easy to carry and use. It is an excellent tool for measuring roughness profiles for post-construction compliance or for setting up calibration/validation sites for vehicle mounted roughness profilers.

The Z-250 is ‘walked’ along the road surface recording the elevation at 250 mm intervals along the road. A Bluetooth connection from the Z-250 to an Android mobile device makes it easy for use and shows real-time display of all readings and IRI values.

Data is easily transferred to office computers via USB for any additional analysis using free industry standard software such as ProVal or other software.

Key Benefits & Features

  • Automatically calculates IRI for calibration/validation sites
  • Outputs in PPF and CSV files
  • Data is compatible with industry recognised software such as ProVal for analysing road profiles
  • Very compact and portable unit
  • Bluetooth compatible
  • Use the plotting function to instantly graph the profile’s change in elevation

Data Outputs

  • Raw longitudinal profile (.csv and .ppf formats)
  • Roughness (IRI)

What are reference profiles commonly used for?

  • Calibrating or validating vehicle mounted roughness measurement system e.g. the ROMDAS Bump Integrator
  • Quality control for construction and infrastructure projects such as highways, car parks, bridges and airports
  • Collecting data for research purposes, such as developing a new roughness deterioration model or calibrating/testing existing HDM roughness models.

Z250 Reference Profiler Software

The Z-250 Android software application is now standard with the ROMDAS Z-250 Profiler, which is an excellent option when collecting accurate roughness data for calibration or validation. The Z-250 measuring unit contains a precision inclinometer which outputs to an Android device that immediately records and processes the data.

The software will store the surveys on the device and can be downloaded to a computer system for further analysis with ProVal or similar software. With it’s user-friendly software, the ROMDAS Z-250 road profiler greatly reduces the risk of human error during collection and processing of high accuracy roughness data.

Learn More About Our Products

We provide customers with innovative and cost effective data collection equipment

Road Roughness Measuring Instrument


This central system is the heart of all ROMDAS survey vehicles. It consists of the core hardware interfaces, acquisition software and power supplies needed for the addition of ROMDAS’ various add-on modules.

Road Roughness Measurement

Add-On Modules

Customise a ROMDAS system by selecting from a range of add-on modules, including modules for Video Logging, Roughness, GPS, 3D Pavement Profiling, Mobile Mapping and more. Find the right configuration for your project.

Road Roughness Measuring Instrument

Post-Processing Software

ROMDAS’ premium post-processing software includes features such as data integration, video & event rating, GIS mapping and synchronised data play. A useful tool for extracting the most out of your ROMDAS data.