5. Grasp the sensor body to ensure you are at the same electrical potential as the element.
Hold the edge of the circuit board between your fingertips and pull the element out of the
socket. Store the old element in electrostatic protective packaging if you wish to retain it.
CAUTION:
Avoid
pink-colo
u
red
electrostatic
bags
as
they
can
emit
chemicals
which
change
the
calibration
of
the
sensor.
6. With the element removed, check for dirt and corrosion around the socket. Use a damp
cloth to remove dirt or salts that might be there.
7. Hold the replacement element by the sides of the circuit board. The element has four gold
pins. Carefully match the gold pins to a row of holes in the socket with the sensing module
facing the socket center towards the empty row of holes (see
[p. 20]). Gently
push the pins down into the socket until they will not go in any further.
8. Before replacing the filter cap and connecting the sensor to a data logger, double-check
that the element is seated correctly with the sensing module facing the socket center,
towards the empty row of holes (see
[p. 20]).
CAUTION:
Conditions that will cause the sensor to not work include an improperly oriented
element, contamination, or water bridging the connections. The element may draw
excessive power, possibly damaging the element, when powered under these
conditions for more than a few seconds.
9. Screw the filter cap onto the sensor, ensuring it clears the sensor element. If the element
appears too close to the filter cap, the element likely has been inserted in the incorrect
orientation or the element gold pins are bent. Screw the filter onto the thread and gently
finger tighten.
CAUTION:
Only finger tighten the filter approximately 1/8th of a turn after the filter is fully screwed
onto the thread. Over-tightening the filter will damage it and cause problems in
inserting and removing the sensor from some shields.
10. Reconnect theWintersense SDI-12 to the data logger.
8.3 Updating the operating system (OS)
The SDI-12 extended command
XLOADOS!
sends the new operating system (OS) to the sensor.
Only the CR6, CR1000X, CR350-series, and CR300-series data loggers are compatible with the
Wintersense SDI-12
21
