Campbell Scientific CS215 Temperature and Relative Humidity Probe - Manual (Page 24)

CS215 Temperature and Relative Humidity Probe
• There are eight holes in the socket, while the element only has four
pins.
• The element will work when fitted into either side of socket but must
be installed in one of the two possible orientations to work.
• The correct orientation is with the black molded tip of the element
(that contains the sensing components) mounted directly above the
center of the socket.
• FIGURE 9-1 shows the correct orientation, while FIGURE 9-2 shows
the incorrect orientation.
If the sensor is oriented incorrectly, it will not work. The
element will draw excessive power from the supply and may
be damaged if left powered in this state for more than a few
seconds.
5. Grasp the body of the sensor (this also ensures you are at the same
electrical potential as the element) and, holding the black tip of the
element between your fingertips, pull the element out of the socket. Store
the old element in electrostatic protective packaging if you wish to retain
it.
6. With the element removed, check for dirt and/or corrosion around the
socket. Clean any dirt away using a damp cloth to remove any salts that
might be there.
7. Unpack the replacement element, avoiding static discharges to the element
by making sure you touch the packaging before the element.
8. Either hold the element by the black top of the package (the other end to
the gold plated pins) or use a pair of fine nosed pliers or tweezers to grip
the sensor by the pins. Carefully match the pins to the socket in the end of
probe.
9. Confirm the correct orientation and gently push the pins into the socket
until they will not go in any further.
10. Before replacing the filter element and turning on power to the sensor,
double-check that the sensor is inserted in the correct orientation. Refer to
FIGURE 9-1.
11. Screw the filter back onto the end of the probe, making sure it clears the
sensor element. If the element appears too close to the filter, there is a fair
chance that it has been inserted in the incorrect orientation or that the legs
of the element have been bent. Screw the filter onto the thread and tighten
gently with your fingers.
Only tighten the filter approximately an eighth of a turn by
hand when the filter is fully screwed onto the thread. Over-
tightening the filter will damage it and cause problems in
inserting and removing the probe from some shields.
CAUTION
CAUTION
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