Dwyer UXF2 - Manual (Page 44)

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3.8. How to remove the sensor unit (SX3-A0, SX3-B0)
If the sensor unit has to be detached from the frame such as for changing the spacing between the sensor units, proceed as
follows:
(1) Loosen the wing nut located at the middle of the
frame with 3 to 4 turns (Fig. 3-39).
Note 1: Do not loosen the wing nut completely.
Fig. 3-39
(2) By hand, hold the frame close to the pressing fixture
for a sensor unit to release.
Press the plastic section which extends from the
frame of the sensor unit just enough to open the
frame a little (about 1 mm). At this time, the claws
of the sensor unit fixture are disengaged from the
frame (Fig. 3-40).
Note 2: Do not open the frame excessively. Otherwise,
it may bend, so reinstalling the sensor may be
difficult or the frame may become deformed.
Fig. 3-40
(3) Disengage the opposite claws of the sensor unit
pressing fixture from the frame (Fig. 3-41).
Fig. 3-41
(4) Ensure the claws are disengaged from both sides, and
remove the sensor unit from the frame (Fig. 3-42).
Fig. 3-42
(5) Repeat this procedure for the other sensor.
Note 3: After removing both sensor units, retighten the
loosened wing nut.
BULLETIN F-70