1. Wash your hands to avoid getting dirt or grease on the element. If possible, use cotton
gloves and handle the element by the edges of the small circuit board. Avoid touching the
square white filter on the surface of the small, black component on top of the circuit board.
CAUTION:
If dirt, salt, or grease are left on the face of the sensor element during the process of
handling the element, it may influence the measurements made.
2. Ensure the Wintersense SDI-12 has been disconnected from the data logger.
3. Remove the filter cap by unscrewing it counter clockwise when looking towards the tip of
the sensor.
CAUTION:
Only unscrew the filter cap. Attempting to pull the filter cap off the sensor may damage
the filter cap.
4. Identify the sensor element. The element plugs into the black plastic socket that protrudes
by about 2 mm from the end of the body of the sensor.
Figure 8-4. Correct fit of the 4-pin sensor element (side view)
Wintersense SDI-12
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