Description
The EGE Elektronik LC 521/3 GA-Ex22 is the authoritative solution for monitoring airflow in massive industrial infrastructures where combustible dust hazards are present. Certified to ATEX Category 3D, this sensor is designed for Zone 22 installations, providing safety and reliability in grain silos, large-scale extraction manifolds, and chemical processing plants without requiring external intrinsically safe barriers. The defining characteristic of the LC 521/3 is its triple-length probe. In heavy-duty ventilation shafts or heavily cladded piping, standard length probes cannot reach the laminar flow zone, leading to inaccurate readings. The /3 variant overcomes these physical barriers, positioning the calorimetric sensing tip precisely in the air stream. Since it utilizes the thermal (calorimetric) principle, the sensor is completely solid-state—making it immune to the clogging and mechanical jamming that plague mechanical switches in dusty environments.
