Barber Colman Co. PC-132-0-1 Air Flow Switches

Barber Colman PC-132-0-1 is a pneumatic-to-electric air flow switch with SPDT contacts that converts air-pressure changes into an electrical signal for HVAC and building-automation control. It monitors duct or ambient air pressure and provides an adjustable setpoint to trigger alarms, interlocks, or system feedback based on airflow conditions. The model specifies a 0–30 psi input pressure range and employs 1/8 in. NPT connections, aligning with the PC-132 family’s standard fittings. This switch offers a straightforward interface between pneumatic pressure signals and electrical control circuits, suitable for damper control, safety interlocks, and monitoring applications in commercial systems.