Stack ST8302, Руководство пользователя

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STACK ST8302 and ST8360 Video-Logger System Chapter 4. Installation
User Guide 51
Wheel Speed Sensor
The Stack ST670 wheel speed sensor generates an electrical pulse
whenever a ferrous target, such as a wheel bolt, passes close to its end.
The sensor should be installed so that it can detect these targets as the
wheel turns. The WS Pulses/Rev configuration menu setting specifies
the number of targets making up a complete revolution of the wheel,
thereby allowing wheel speed to be calculated.
Choosing a location for the wheel speed sensor
Select a suitable location for the sensor with an unobstructed view of
your chosen targets. The sensor must detect at least one ferrous target
(e.g. a driveshaft bolt) per revolution of the wheel. Note that the sensor
will not detect non-ferrous objects such as alloy wheel spokes.
Consider the following points when choosing a location for the wheel
speed sensor:
• Ideally, choose a non-driven wheel.
•
The targets should be equally spaced around the wheel so that,
when the wheel speed is constant, the electrical pulses occur at
regular intervals.
• Do not install the sensor too close to the brake disc or calliper.
• Position the sensor no closer than 75 mm (3 inches) from HT leads
or sources of intense heat.