Whether in research institutions or in the operation of modern biogas plants – those who truly understand the process can optimize it. A key factor in this: pressure. Because where microorganisms are actively working and producing gas, the pressure in the system changes. These changes provide crucial information about biological activity.
Understanding the Biogas Process
The focus of an experiment at the Institute for Agricultural Technology and Animal Husbandry was the question: How do microorganisms respond to various additives – promoting or inhibiting? For this, several reaction vessels were operated in a heated water bath. Each variant contained a different substance. The gases produced during decomposition lead to a pressure increase – which was measured precisely.
For this purpose, compact pressure sensors of the ATM/N type from STS were used. They continuously recorded the pressure in each vessel, enabling seamless observation of gas production. The result: reliable data on microbial activity – quick, precise, and without extensive analytics.
One Sensor, Two Values
Another advantage: the sensors measure not only pressure but also temperature simultaneously. The temperature sensor is directly positioned in the medium. This allows for holistic monitoring of the process – without additional installation effort. Ideal for compact systems or laboratory setups with many measurement points.
Thanks to their welded construction and protection class IP68, the sensors can be used under demanding conditions – from environmental technology to the food industry to industrial processing technology.
Technical Data of the ATM/N:
- Measurement ranges: 0–50 mbar to 0–25 bar
- Accuracy: better than 0.1% FS
- Temperature range: –25 °C to +50 °C
- Material: Stainless steel, welded, IP68
- Design: optionally intrinsically safe (ATEX)
Thanks to the modular sensor design, mechanical and electrical interfaces can be easily adapted – ideal for individual requirements in research and industry.
Conclusion
The right measurement technology makes the difference: those who measure accurately can better understand biological processes, control them more precisely, and operate more efficiently. The pressure and temperature sensors from STS offer a reliable solution for this purpose – developed for practical application, proven in research.
