A customer from the chemical industry required a precise and reliable flue gas measurement system to determine the volumetric flow in a masonry chimney. The particular challenge lay in the extreme temperature conditions: While the flue gas temperature typically ranges between 150 and 200 °C, it can occasionally rise to up to 1,000 °C. Additionally, the measurement installation was to be set up outdoors, which could lead to zero point drift in the transmitter and consequently a long-term impairment of measurement accuracy. Furthermore, a rapid implementation was necessary, as the delivery had to be completed within eight weeks.
S.K.I. developed a customized solution within the required eight weeks: A 2-meter-long Pitot tube made of a high-temperature-resistant nickel-based alloy. To ensure long-term measurement stability, the system was equipped with an automatic zero point adjustment. Additionally, a heated protective enclosure was integrated to minimize temperature influences on the transmitter, enabling an almost maintenance-free measurement process.
Thanks to the swift and targeted implementation, the measurement solution was installed and commissioned on time. The design, specifically tailored for high temperatures, ensures reliable detection of the flue gas volumetric flow even under extreme conditions. The automatic zero point adjustment maintains measurement accuracy over time. Compliance with regulatory requirements according to QAL1 (EN 15267) was ensured, allowing uninterrupted plant operation.
With this solution, S.K.I. has once again demonstrated that demanding measurement tasks can be efficiently and promptly realized even under challenging conditions. The combination of high-quality materials, innovative technology, and a well-thought-out system integration provides the customer with a reliable and long-term stable flue gas measurement system.
