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or insufficient pressure differential to slide the internal "canoe
you recognize the importance of precise gap alignment
it often indicates the high limit has tripped due to restricted airflow or a failing bimetal snap disc
As the direct replacement for SC11S
Belimo 22PF-5UG Flow Sensor 320788-703 or insufficient pressure differential toThe Belimo 22PF 5UG Ultrasonic Flow Sensor is a high precision, non intrusive solution designed for accurate flow measurement in HVAC hydronic systems. Featuring a 1 1 2" NPT connection, this sensor utilizes ultrasonic transit time technology to provide reliable readings without the pressure drop or fouling risks associated with mechanical turbine meters. With a rated max flow rate of 47. 5 GPM and a measurement accuracy of + 2%, it ensures optimal
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