Campbell HydroSense II Uživatelská příručka stáhnout pdf (Strana 11)

HydroSense II Soil Moisture Measurement System

By default the HydroSense II does not display the Water Deficit data set on the

main screen. To enable this mode, turn on Deficit Mode from the configuration

menus.

5.3.1 Soil types

The HydroSense II needs three different parameters to calculate relative water

content and deficit - “wet” and “dry” water content values and the probe length

used. Since these parameter groups represent soil specific attributes they are

referred to as “soil profiles”. The HydroSense II can hold up to 10 soil profiles

labelled “soil 1” to “soil 10”.

By default, some of the soil profiles in the HydroSense II are preset to typical

values. These values may be used or overwritten as desired, but it is important to

record what soil types were used for each profile stored in the display. The

default soil values are shown in the table below.

Soil

“Dry”

“Wet”

Probe

Length

Soil Description

15%

20cm

Sand

10%

20%

20cm

Sandy Loam

18%

35%

12cm

Sandy Clay

15%

30%

12cm

Loam

20%

40%

12cm

Silty Clay

17%

35%

12cm

Clay Loam

5.3.2 Selecting a soil type and setting “wet” and “dry” values

Soil profiles can be changed from the main screen of the HydroSense II. To

select the soil profile, press the Right button to highlight the soil number as

shown above. To change soil profile, press the Read/OK button.

The soil profile list should be displayed. Use the Up and Down buttons to move

through the list to the desired soil type and press OK.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 36 37

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