1
Graph No. 1
Relation between displayed
moisture value and resistance value
resistance
moisture
Instruction manual for
Instant Moisture Checker Model SK-940A
Thank you for purchasing the Instant Moisture Checker Model SK-940A.
- Read this manual thoroughly before using. Keep this manual in a safe place for future references whenever
necessary.
Before use
. This SK-940A is designed to measure the electric resistance between two electrodes on the probe and display
a value that represents the moisture content.
. The displayed reading is not an absolute value; it is relative to electric conductance. If the sample has a high
concentration of highly conductive substances such as salts 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 sample, and so have little effect on the moisture content value, the device settings
are useful for
comparative examinations.
. In the SK-940A, six ranges are provided such as one standard range (S)
and five Users-ranges (1/2/3/4/5).
At factory shipment, the setting value in all ranges (S/1/2/3/4/5) is
tentatively set that the angle is 100 and the equilibrium is 0.0 as the graph
No.1. The setting values can be individually changed in all ranges
(S/1/2/3/4/5).
This default range is available in most cases, however in order to have
more accurate readings, “Users-ranges” (1/2/3/4/5) is usable. Refer to
“Set up Users-ranges”
NB. In the standard range, the default setting is also changeable;
however it would be better not to change the value.
. If the unit is not used for a long period of time, remove the battery.
Otherwise, the battery may leak resulting in malfunctions.
Names of section
TYPE 5
electrodes
Main body
Probes
TYPE 2
TYPE 3
TYPE 4
TYPE 1
Measurement
button
electrodes
MEASURE
AVERAGE
SELECT
CAL
DISPLAY
Summary of Contents for SK-940A
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