General DSMM500 Manual de usuario
SOIL
MOISTURE METE
R
Model : DSMM500
Your purchase of this
SOIL MOISTURE METE
R
marks a step forward for
you into the field of
precision measurement.
Althou
g
h this METER is
a complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operatin
g
techniques are
developed. Please read
the followin
g
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1.FEATURES................................................................
.
1
2.SPECIFICATIONS......................................................
.
1
3.FRONT PANEL DESCRIPTION.....................................3
3-1 Soil moisture Probe.............................................
.
3
3-2 Moisture Sensin
g
Head........................................
.
3
3-3 Power Button...................................................... 3
3-4 Hold Button........................................................
.
3
3-5 REC Button.........................................................
.
3
3-6 LCD Display........................................................
.
3
3-7 Battery Compartment/Cover.................................3
4. MEASURING PROCEDURE..........................................4
4-1 Measurement by selecting the different
material............................................................4
4-2 Data Hold...........................................................
.
5
4-3 Data Record........................................................5
5. BATTERY REPLACEMENT...........................................6
1. FEATURES
* Designed to check the moisture level of soil or other
similar material.
* Measurement range : 0 % to 50 % moisture content
of soil sample with 0.1 % resolution.
* All in one digital soil meter, easy to make operation.
* Data hold function to freeze the desired value on display.
* Microprocessor circuit ensures high accuracy and
provides special functions and features.
* Operates from DC 1.5V ( UM4/AAA ) x 4 PCs batteries.
* Built-in low battery indicator.
* Durable, long-lasting components, enclosed in strong,
compact ABS-plastic housing.
2. SPECIFICATIONS
Applications Designed to check the moisture level of
soil or other similar material.
Measurin
g
Used the 2 pins electrode to measure the
Principal conductive ability of the species, then
converter to the reading of % " Moisture
content " of soil sample.
Display LCD size : 28 mm x 19 mm.
1
Measurement 0 % to 50 % moisture content on soil.
Range
Resolution 0.1 %.
Accuracy ± ( 5 % + 5 d ) F.S.
@ 23 ± 5 , F.S. : full scale.℃℃
Circuit Custom one-chip of microprocessor LSI
circuit.
Probe 2 pins moisture electrode.
Data Hold Freeze the display reading.
Sampling Time Approx. 0.8 second.
Operating 0 to 50 .℃
Temperature
Operating Less than 80% R.H.
Humidity
Power Supply DC 1.5 V battery ( UM4/AAA ) x 4 PCs,
Power Current Approx. DC 5 mA
Weight 267 g/ 0.58 LB.
@ Battery is included.
Dimension
Meter body :
172 x 40 x 40 mm ( 6.8" x 1.6" x 1.6" ).
Probe body :
202 mm x Dia. 10 mm
8" x Dia. 0.4" .
Total length ( meter + probe ) :
374 mm ( 14.7 " ).
Accessories Instruction manual..................1 PC.
Included
2
3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Soil moisture Probe
3-2 Moisture Sensing Head
3-3 Power Button
3-4 Hold Button
3-5 REC Button
3-6 LCD Display
3-7 Battery Compartment/Cover
3
4. MEASURING PROCEDURE
4-1 Soil measurement
1)Turn on the meter by pressing the " Power Button "
( 3-3, Fig. 1 ) momentarily.
* Press the " Power Button " ( 3-3, Fig. 1 )
momentarily again will turn off the meter.
2)Insert the " Moisture sensing head " ( 3-2, Fig. 1 ) into
the measured soil.
It is recommended that probe head should be
inserted into the soil at least 10 cm when make
the measurement..
Soil moisture
Probe
Fig. 2
Moisture
Sensing Head
Consideration :
If the sample soil under testing has a high
moisture content it may take a few minutes t
o
obtain a stable reading.
4
4-2 Data Hold
* During the measurement, press the " Hold Button "
( 3-4, Fig. 1 ) momentarily to hold the measured
value. The LCD will show a " HOLD " symbol.
* Press the" Hold Button " once again to release the
data hold function.
4-3 Data Record ( Max., Min. reading )
1)The data record function records the maximum and
minimum readings. Press the " REC Button " ( 3-5, Fig.
1 ) momentarily to start the Data Record function,
shows " REC " on the display.
2)With the " REC " symbol on the display.
a)Press the " REC Button " ( 3-5, Fig. 1 ) momentarily,
the " REC MAX " symbol along with the maximum
value will appear on the display.
b)Press the " REC Button " ( 3-5, Fig. 1 ) momentarily
again, the " REC MIN " symbol along with the
minimum value will appear on the display.
* When display shows " REC MAX " or " REC MIN ",
press the " Hold Button " ( 3-4, Fig. 1 )
momentarily will delete the max. ( min. ) value,
the display will show the " REC. " only and
execute the memory function continuously.
c)To exit the memory record function, press the
" REC " button for 2 seconds at least. The display will
revert to the current reading, not show " REC "
5
5. BATTERY REPLACEMENT
*Replace the batteries when the left corner of the LCD
displays the low battery icon " ", using 4 fresh
1.5 V ( UM4, AAA ) batteries.
*To change the batteries, open ( rotate clockwise direction )
the " Battery Cover " ( 3-7, Fig. 1 ).
*Make sure the " Battery cover " (3-7, Fig 1) is secured
after changing the batteries.
60904-PMS714-GENERAL-DSMM500
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