Campbell Scientific CS725 Snow Water Equivalency Sensor - Manual (Page 33)

CS725 Snow Water Equivalency Sensor
FIGURE 9-3. Horizontal pipe mounting shown with the 27412 Mount Kit
A fully mounted CS725 with the 27412 mounting brackets is shown in
FIGURE 9-3, Horizontal pipe mounting shown with the 27412 Mount Kit.
10. Final Parameter Setup
Once the CS725 is installed, the following items are required for the final setup
of the CS725.
• Obtain the soil moisture values for the ground under the CS725. The
recommended depth of the measurements for most soil types is 20 cm (8 in).
However, when well-drained soils are present, the measurements should
be made at a depth of 30 cm. The value should be in percent by weight
[100 *(mass of water/mass of dry soil)].
• Measure the final installed height of the CS725 in centimeters from the
bottom of the sensor to the ground.
It is best to have the CS725 installed prior to having any snow on the ground.
If the CS725 is being installed with snow already on the ground, then the
average existing SWE value in mm will need to be obtained. The existing
SWE is needed to calculate the background radiation count with no snow
present (i.e., n0Ke and n0Tl parameters). Campbell Scientific technical
support will need to be contacted so that calculations can be performed to
determine the n0K and n0Tl values.
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