Crandall Stats & Sensors AK-42309-500-CSS Positioning Relay13# Span Adjustment

The Crandall Stats & Sensors AK-42309-500-CSS Positioning Relay is a pressure-sensitive control part utilized in the HVAC systems to change a signal into a proportional electrical response. It detects air or gas pressure within a maximum range of 13 PSI and modulates its output in order to move dampers, as well as valves or other control elements in the system. It is installed in hybrid control networks, and it is connected to pressure lines and control circuitry. It plays the role of allowing the mechanical component to be modulated accurately with changes.