SPEED measuring devices from Rowe Hankins use magnetic pulses to produce a signal which is proportional to speed and does not suffer from electromagnetic or radio-frequency interference. The Hall-effect probes can be retrofitted directly to a gearbox, using the cogs as a target.
Where the gearbox is unsuitable, Rowe Hankins offers a separate pulse generator. This uses a precision-engineered target which can be fitted on a powered axle or motor shaft, and provides an accurate signal that can be detected by a Hall-effect sensor located up to 10mm away. It is unaffected by contamination or vibration, and has a high tolerance to misalignment.
Data can be fed to a variety of on-train monitoring and recording systems.
Rowe Hankins Components Ltd, UK
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