6 107/108 soil temperature probe, 7 hmp60 vaisala temperature and rh probe, 107/108 soil temperature probe – Campbell Scientific UT10 10 foot Tower w/ Grounding Kit and Hinged Base User Manual

Page 46: Hmp60 vaisala temperature and rh probe

Advertising
background image

UT10 Weather Station

8.5.6 107/108 Soil Temperature Probe

1. Select an undisturbed area of ground on the side of the tower that will

receive the least amount of traffic. Route the sensor lead from the

datalogger to the selected area.

2. Dig a narrow trench next to the sensor lead, ending the trench at least 6 in

short of the probe tip. Lay the sensor lead into the trench.

3. Use a screwdriver to poke a horizontal hole into the undisturbed soil at the

end of the trench at the appropriate measurement depth. Insert the probe

tip into the hole and carefully backfill the trench.

4. If bare soil is required, a soil sterilant such as Paramitol can be applied to

the area where the probe is buried. Soil erosion can be a problem when

the probe is under bare soil. To prevent erosion from occurring, bury a 36

in square frame constructed from 2 in x 4 in lumber around the probe, with

the top of the frame even with the soil surface.

8.5.7 HMP60 Vaisala Temperature and RH Probe

Mount the HMP60 probe inside the 41303-5A 6-plate radiation shield as

shown in FIGURE 8-18.

1. Loosen the two mounting clamp screws on the base of the radiation shield.

Insert the HMP60 sensor through the clamp until the base of the sensor is

even with the bottom of the clamp.

Tighten the two screws evenly until the clamp is snug against the sensor base.

36

Advertising