From biogas to clean fuel: NISSEN energy streamlines signal control with PR electronics

Gas cleaning and cooling made simpler with PR electronics’ plug and play measurement and control devices.

About NISSEN energy

NISSEN energy a/s is a Danish specialist in sustainable energy solutions. The company delivers complete systems for biogas, gas engines (combined heat and power, CHP), gas treatment and cooling, gas upgrading and flares.

Their work centers on converting raw biogas into higher-value energy, including upgrading it to natural gas quality for customers in Denmark and abroad.

The application: biogas cleaning

In a recent gas cleaning and cooling project, NISSEN energy supplied their treatment plant design to purify biogas before it continues into the upgrading system. Biogas often contains water, siloxanes and hydrogen sulfide, which must be removed to protect gas engines, compressors and the membrane technology used to upgrade the gas to natural gas quality.

For this application, PR electronics provided ATEX-certified transmitters, signal conversion devices, repeaters and a Bluetooth-enabled display for integration in the electrical cabinet. This setup allows the devices to be configured through a single 4512 display, with live data and parameter adjustments available directly from a mobile device or iPad.

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NISSEN energy’s challenges

The gas cleaning system contains a broad selection of different types of instrumentation such as temperature sensors, pressure transmitters, switches which make setup, monitoring and service complex.
Technicians needed quicker access to live data and easier ways to adjust settings because manual configuration of each module slowed down commissioning and maintenance work.
The system operates in a hazardous area, so reliable equipment and the correct ATEX-certified components were needed to ensure safe and compliant operation.

The solution

PR electronics helped simplify the setup by supplying:

ATEX-certified transmitters for safe and reliable measurements in the gas cleaning area.
The multifunctional devices in the 9000 series cover a wide range of field signal applications in a few item numbers, reducing spare parts requirements and simplifying system design.
A Bluetooth-enabled PR 4512 display installed in the electrical cabinet, giving technicians direct access to settings, log data and live process values from a mobile or tablet device.
A unified interface where the devices can be configured from one display, providing one screen and one app for the entire system.
The PR 4512 display enables easy storage of configuration files for installed devices, for example in a centralized cloud-based repository. This allows configuration files to be accessed at any time and from any location, simplifying module replacement and ensuring that replacement units are configured identically.

The outcome

Easier system control, as all functions can be accessed through one display and a mobile interface, reducing training needs and operator complexity.
Faster commissioning and troubleshooting, with technicians able to view live data, adjust parameters and diagnose issues on site using a mobile device.
Better service efficiency through plug and play configuration, leading to fewer errors, less downtime and easier maintenance.
Improved process insight, with real-time data logging and Bluetooth access providing a clear view of system performance.
A strong and reliable partnership, as NISSEN energy values PR electronics’ proven quality, Danish production, certified devices and solid support, all important for delivering dependable systems to their own customers.

Why did NISSEN energy choose PR electronics?

“PR electronics has a strong reputation, and we already knew their modules for signal conversion and barrier applications.

The quality is reliable, the documentation is easy to work with, and having Danish production and local support made the choice straightforward. It gave us confidence that we were selecting the right solution for our gas upgrade projects.”

Allan Dahl, Project Manager, NISSEN energy a/s

Customer experience and support

In the early phase of the project, NISSEN energy used PR electronics’ technical support to select the right devices and secure the required certification documents, including ATEX and North American approvals.

Allan noted that in this stage the guidance from the support team was especially helpful. After start-up, the configuration tools and online documentation proved easy to use. As Allan explained:

“I found the documentation on your website just by typing in the product number, and it was very easy to get to.”

The support team responded quickly throughout the process and helped ensure that all necessary documents for international approvals were available, reducing regulatory challenges for NISSEN Energy.

Future outlook

NISSEN energy sees continued growth in the biogas upgrade market as biogas plants expand and demand for upgraded biomethane increases internationally.

With installations already delivered and more projects underway, they expect further opportunities across new sites and regions. PR electronics looks forward to supporting NISSEN energy in future projects and helping scale their simplified measurement and monitoring setup into additional plants and markets.