The Istec tachometer series delivers accurate speed monitoring and switching for rotating equipment. With a compact design and a small technical footprint, these systems enable low‑impact installations on any rotating machine. The tachometer series is available in four versions, offering flexible solutions for a wide range of applications.
SpeedSys T10 / SpeedSys T11
The SpeedSys T10 and T11 are 1-channel monitoring and switching systems for rotational speed measurement. They convert speed into highly accurate analog signals for further processing and provide relay functions for alarm and trip or shutdown. The T10 features two configurable relays, 
while the T11 includes an integrated display and one configurable relay.
SpeedSys T20
The SpeedSys T20 is a 2-channel monitoring and switching system with 4 configurable relays. The T20 offers more speed monitoring functions than the T10, including: speed acceleration, creep, zero speed, reverse rotation, dynamic sensors monitoring, and multi-channel integrated trip functions. The system also features a redundant power supply and redundant sensor inputs.
SpeedSys T30
The SpeedSys T30 is a 3-channel monitoring and switching system with 6 configurable relays. The T30 offers similar functions as the T20 but adds an additional channel and relays. It has triple redundant sensors inputs and a redundant power supply.
SIL or ATEX requirement? Check SpeedSys 200 (SIL2) or SpeedSys 300 (SIL3)
Jaquet tachometers
The Jaquet tachometer range have been discontinued by its manufacturer and are no longer available. The Istec SpeedSys Tachometer series offers functional replacements for each Jaquet tachometer.
