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Sash position / air flow detection system
Sash position / air flow detection system
The sash postition detection system is designed to proportionately adjust the enclosure’s blower speed to the height of the sash opening and the needs of the filtration system.
 
 
The sash position detection system within GFH® is designed to proportionately adjust the enclosure’s blower speed to the height of the sash opening and the needs of the filtration system to constantly ensure a face velocity of 100 fpm*. Permanently in operation, the detector can be remotely managed and monitored using the gGuard software for optimum security.
*On ERLAB GFH Models. Check partner specifications for actual face velocity of your desired model. 
 
   
 Example of detection reading
when the sash is low
   Example of detection reading
when the sash is mid-level
   Example of detection reading
when the sash is fully open
Sash too high : OFF   Sash too high : OFF   Sash too high : ON
 
 
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