When Accuracy is greater than Speed

In harsh environments where non contact speed sensing and control are required, for example to control the slip of AC induction motors, the measurement resolution is usually derived from the number of gear teeth of the target. In many cases the desired resolution is higher than the diameter of the pole wheel and the minimum size of the module / gear teeth would allow. The new DSI family of speed sensor alleviates this problem by providing speed signals with frequencies up to 16 times higher than the number of teeth of the original pole wheel.

The DSI features and advantages

• Higher resolution on smaller size targets
• True power on behaviour
• 1.5 module pole wheel 6 kHz tooth frequency
• Sealed, waterproof stainless steel housing - can be used in filthy environments
• Can replace resolver systems by more robust approach