The document describes the features and characteristics of the Solid State Sensors GT1 series Hall Effect gear tooth sensors. These sensors can be used in automotive, heavy duty vehicles, and industrial applications such as camshaft and crankshaft speed/position detection, transmission speed, tachometers, anti-skid/traction control, etc. They feature digital current sinking output, better signal-to-noise ratio, fast operating speed, and EMI resistance.
The GT1 series gear tooth sensor uses a magnetically biased Hall‑effect IC to detect ferrous metal targets. It provides a digital open‑collector output, self‑adjusts to temperature and run‑out variations, and includes reverse‑polarity and transient protection. The sensor operates from a 4.5 V to 24 VDC supply and is suitable for applications such as camshaft/crankshaft speed detection, transmission monitoring, tachometers, anti‑skid control, sprocket and chain speed measurement, and high‑speed proximity detection.
Key specifications include a supply voltage range of 4.5‑24 VDC, typical supply current of 10 mA, switching times of 15 µs rise and 1 µs fall, and an operating temperature range of –40 °C to 150 °C. The sensor can sense targets with a gap up to 0.080 in. and is rated for storage temperatures up to 150 °C (short‑term 160 °C).
| Supply Voltage | 4.5 to 24 VDC |
|---|---|
| Supply Current | 10 mA typ., 20 mA max. |
| Output Type | Digital current sinking (open collector) |
| Switching Time Rise | 15 µsec max. |
| Switching Time Fall | 1.0 µsec max. |
| Operating Temperature Range | -40 °C to 150 °C |
It operates from 4.5 to 24 VDC.
It provides a digital current sinking (open collector) output.
The rise time is up to 15 µsec.
The sensor works from –40 °C to 150 °C.