SulfiLogger: Highly Reliable Temperature Sensors
DkCCC has completed a feasibility study on precise temperature measurements for the company SulfiLogger.
When Challenges Become Opportunities
SulfiLogger is a Danish company specialising in advanced sensors for critical infrastructure installations like wastewater treatment, biogas fabrication and various industrial applications.
SulfiLogger was looking to develop a faster, more accurate sensor for monitoring in wastewater, since measurement accuracy in these environments can affect economic benefit for the customers. Inaccurate readings can result in higher cost, e.g. if the sensor signal is used to control dosing of an expensive chemical.
However, accurate temperature measurements can be challenging in harsh conditions like a sewer, where temperatures can be highly fluctuating. Faced with this challenge, SulfiLogger approached DkCCC to evaluate whether a temperature sensor could be fabricated that met the desired performance in real-world applications before committing further development and fabrication investments.
Using a Feasibility Study to Validate and Reduce Technical Risk
DkCCC’s feasibility studies provide a structured framework for testing technically demanding ideas, giving companies access to highly qualified technical resources while minimising the impact on their own operations. In SulfiLogger’s case, the study offered the opportunity to explore advanced sensor integration concepts without committing to equipment or fabrication investments prematurely.
The goal of the project was to validate if a resistance temperature detector (RTD) could be made with cleanroom processes in a design that would be feasible for high-volume production. The agreed solution was a thin metal ‘meander’ structure designed to match the temperature characteristics of commercially available Pt-100 sensors.
Claus Friis Pedersen, Head of the Danish Chips Competence Centre, highlights the value of this collaborative approach:
“The real impact of a feasibility study comes from combining a company’s application knowledge with advanced technical capabilities offered by the Competence Centre partners. By helping companies to test next-level chip technology, we can evaluate technical possibilities and define a realistic path towards commercialisation of new chip-related opportunities.”
From Feasibility Study to Next Steps
The temperature sensor was designed, fabricated, and tested at DTU Nanolab.
The feasibility study provided:
Together, these outputs demonstrated that a Pt100 temperature sensor can be fabricated using this approach and provided a foundation for potential future product development. The new Pt100 design has the potential to address industry needs where fast and accurate temperature readings are required to obtain critical process information, for example in wastewater applications.
Jesper Lebæk, Head of Technical Development at SulfiLogger, reflects on the process:
“We have been very pleased by the Feasibility study w. DkCCC. The simple decision processes and the rapid implementation of next fabrication steps allowed us to push forward at a pace we would not have been able otherwise. We expect that the results from the feasibility study will be integrated into our products in the future.”
Interested in exploring how a feasibility study could advance your technology? Contact DkCCC to start your own journey – and subscribe to our newsletter to stay updated on future case stories from DkCCC’s work.