PICOTURN – 1st Generation

The Original System
for Turbocharger Speed Measurement

Accurate Technologies Inc. (ATI) offers the PICOTURN 1G rotational speed sensor for turbochargers. Compared to optical or magnetic sensing systems, the PICOTURN system is proven as a rugged, reliable, simple, accurate and cost effective solution. The system’s functional principle is a 1MHz pulse induction with eddy current discrimination, using a compressor mounted solenoid sensor that detects and counts compressor vanes individually, generating a standard TTL/CMOS output signal. Maximum wheel speed measurement is 400,000 rpm, with a minimum operating speed of 390 rpm. The preferred turbo compressor wheel material is aluminum; titanium wheels require individual testing to verify compatibility with the PICOTURN sensor.

Standard PICOTURN-1G Sensors are passive sensors, exchangeable with an individual controller module. Use any 1G sensor with the PICOTURN-BM controller.

The PICOTURN system benefits from high sensitivity, allowing a large distance between sensor and the rotating vanes in the range of 1 at 0.6mm vane thickness. Various sensors are available to accommodate numerous user cases differentiated by the length and thread the sensor head. The PTSM-H series benefits from enhanced sensitivity, enabling use with titanium wheel and other critical applications where higher temperatures are a priority.