PTRam Raman Analyzer Design Note

Designed in association with B&W Tek Metrohm

The PTRam is a portable, self-calibrating Raman analyzer developed for in-line and process development testing in labs and pilot plants. It enables real-time monitoring and analysis and was built with industrial users in mind—prioritizing durability and seamless integration into industrial environments. Below are several design aspects that I paid close attention to throughout the development.

Picture showing the PTRam testing samples in vials

Regulatory Compliance Since the PTRam is typically used alongside other rack-mounted industrial equipment, such as data processing units and laser emitters, it was designed as a 4U, 19-inch rack-mountable system. The design follows CE standards, with special attention paid to electromagnetic shielding, grounding, and shock protection. Key features—like EMF shielding strips and meshes, grounding size, and component layout—were carefully planned in close collaboration with the electrical engineer to ensure compliance and safety.

Mechanical Design One standout feature is the integration of an automatic calibration tool—marking a first for the company’s product line. The internal component placement was optimized to minimize fiber optic cable length, saving cost and improving signal quality while also reducing electromagnetic interference and maintaining balanced weight distribution within the system.

Thermal Management With both a spectrometer and other heat-generating components housed inside, forced ventilation was chosen for thermal management. Vent sizes and fan models were carefully calculated and selected to ensure reliable heat dissipation while conforming to EMF requirements.

Aesthetics The PTRam features a sleek, industrial black finish with a minimalist design. Silkscreening and electroplating were used for appearance and to meet CE requirements.

One of the world’s leading materials manufacturers was the earliest adopter of PTRam and used it for glucose and elastase monitoring. You can find more details of this application here.

Until next time—stay curious and keep building!