Airpax T77220-1-201 W 70087-3040-020 Tachtrol Tachometer Pickup

Airpax T77220-1-201 W 70087-3040-020 Tachtrol Tachometer Pickup is a magnetic pickup designed for the Airpax TACHTROL 2 tachometer system, providing the rotational-speed signal that the tachometer counts as magnets or gear teeth pass by the sensor. This part is used as a replacement pickup in older TACHTROL 2 installations, with the T77220-1-201 and 70087-3040-020 identifiers for this assembly. The -020 variant belongs to the 70087-3040 pickup family, a common Airpax sensor subset used with tachometer modules in industrial equipment. Airpax’s TACHTROL 2 product line historically supported tachometer inputs from rotating machinery across a frequency range appropriate for industrial speeds, with published references indicating a tach input range from about 0.1 Hz up to around 1 kHz. The TACHTROL 2 system has been documented as discontinued by the manufacturer, but replacement pickups and compatible spare parts remain listed by third-party distributors, including platforms that catalog T77220-1-201 variants. Typical applications include speed monitoring on motors, conveyors, pumps, fans, and other industrial equipment where the TACHTROL 2 tachometer provides process-control feedback. When ordering, verify that the -201/-020 pairing matches your specific TACHTROL 2 installation and that the 70087-3040-020 is compatible with your control wiring and connector configuration.