ASCO TF10A21 SAD12D SP02 Pressure Transducer

ASCO TF10A21 SAD12D SP02 Pressure Transducer is an ASCO S Series Tri-Point Pressure Transducer Switch assembly that pairs a TF10A21 transducer with a SA12D pressure switch and the SP02 temperature transducer accessory. This compact package is designed for 3 to 100 psi sensing ranges and uses a 1/4-inch pipe port, widely used in ASCO S Series installations for panel-mounted or in-line mounting in pneumatic lines. The TF10A21 designation identifies the tri-point pressure sensing function, delivering a transducer-equipped switch output that can trigger downstream controls at setpoints. The SA12D elements provide the switch action, while SP02 adds temperature sensing capability through a 1/2-inch brass S-union connection, expanding diagnostic data available to control systems. This specific TF10A21/SAD12D/SP02 configuration is listed in ASCO catalogs and distributor listings as a complete transducer-switch assembly; some references note it as an older or obsolete option, reflecting its status in legacy automation inventories. Typical applications include industrial automation loops, compressed air systems, and process lines where monitoring pressure and temperature within a compact module reduces wiring complexity and panel footprint. Always verify current availability and compatibility with your controller and field devices when sourcing a replacement, as exact electrical ratings and porting can vary by lot.