1
Graph: Relation between displayed
moisture value and resistance value
Resistance
Moisture
Instruction manual for
Moisture Meter for Compost Model SK-950A
Thank you for purchasing Sato’s Moisture Meter for Compost Model SK-960A.
Read this manual thoroughly before use and keep it in a safe place for future reference whenever necessary.
Before Use
SK-950A is designed to measure the electric resistance in electrode in the probe and display a value that represents
the moisture content. As it has temperature compensation function, you do not need to compensate temperature
against the measured value within 0 to 80°C.
The displayed reading is not an absolute value but is relative to electric resistance. If compost has a high
concentration of highly conductive substances such as salt or metals, the reading will be higher than the actual
moisture content. However, as long as these substances are in small quantities and are evenly distributed throughout
the compost, and so have little effect on the moisture content value, this device is useful for comparative examinations
after proper setting.
SK-950A has six editable conversion formulae including one standard
formula (Formula A) and five customized formulae (Formulae 1 to 5).
By default, the setting values in all formulae are tentatively set as shown
in the right graph. To modify the formulae, refer to “Setting of Customized
Formulae.”
Note: The Formula A, based on compost made of equal amount of cattle
feces and sawdust, can also be edited but it is recommended to not to
change it for future convenience.
Names of Parts
Main body
Sensor
How to Use
1. Check that the electrode is clean. When it is dirty, rinse and wipe it with a dried cloth. Do not rinse the part other
than the electrode.
2. Press [
測定
] (“Measure”, rightmost key) and confirm that “L” (which means below the range) is displayed.
3. Press [
選択
] (“Select”, key above − sign) to move the cursor (▲) to choose either formula A, 1, 2, 3, 4, or 5.
4. Penetrate the point of the electrode to the position to be measured in the compost.
Electrode
Battery indicator
appears here
Cursor to select
Formula A, 1, 2, 3, 4, or
5 appears here
[
選択
] (“Select”)
and − (minus) key
[
変更
/
決定
] (“Set”) key
Count of measurements
after last display of
average appears here
Display
[
測定
] (“Measure”) key
[
平均
] (“Average”)
and + (plus) key
Grip