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WCX Series XYR 6000 Position Sensor
50040850
Issue 3
3. Process Insertion
3.3. Non-Valve Applications
Figure 15. Changing CW into CCW
If an angle greater than 270 degrees is to be measured, the length of the valve arm may be reduced. If a small
angle is to be measured with greater precision, the length of the valve arm may be increased. Note that these two
options will make actual angle measurements non-linear.
3.3 Non-Valve Applications
Door position sensing
By positioning the WCX Series sensor above a door with the shaft axis vertical, above the hinges, a short linkage
could sense the amount of door opening. The low cal. position could be full closed and the high cal. position could
be full open. Note that this would not be suitable for intrusion detection as a very fast open/close cycle could be
shorter than the maximum update rate from the sensor (1 second intervals).
Air handler plenum door position sensing
Similar to door position sensing, the sensing of air handler status could be monitored. The sensor could be mounted
with the sensor shaft directly coupled to the plenum valve shaft.
Linear displacement
Adding a lightweight pulley with thin wire rope to the sensor input shaft would allow conversion of linear
displacement to a measured angle. The diameter of the pulley would determine the sensitivity and range of the
measurement.
Note that stops would be advised to prevent the sensor input shaft angle from exceeding the 270 degree limit.
16
Honeywell • Sensing and Control
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