System Sensor WFD30N SF 05/11 The Edwards SD-T78 78-inch Sampling

The Edwards SD-T78 78-inch Sampling Tube provides effective airflow sampling for duct smoke detection in HVAC systems with ducts up to 78 inches wide

The pull of the lever sounds an alarm on all pre-signal indicating devices

The circuit can be wired for Style Y (Class B) or Style Z (Class A) operation

It is available with normally open (NO)

System Sensor WFD30N SF 05/11 The Edwards SD-T78 78-inch SamplingThe new WFDN Series waterflow detectors from System Sensor consists of a rugged, NEMA 4 rated enclosure that is more damage resistant than previous metal designs. The waterflow detector is designed for both indoor and outdoor use, with the widest available temperature range, from 32F to 150F. They are also approved for installation on the widest range of pipe schedules, sizes 2 in. through 4 in. are approved for installation on pipe schedules 7