Global Sources MT1901 User manual
WOOD/BUILDING MATERIAL
MOISTURE METER (MT1901)
PLEASE READ ALL OF THE INSTRUCTIONS BEFORE
USING THE MOISTURE METER.
This instrument can be used to measure the amount of water in the wood,
building material, and measure the environment temperature.
FEATURES:
Display: VA screen, with black background & white digital display.
Measurement range:
Wood: 6 to 60%
Building material: 1.5 to 33%
Temperature: 0 to 50°C ( 32 to 122°F )
Resolution:
Wood and Building material: 0.1%
Temperature: 0 .1°C ( 0.1°F)
Accuracy:
Wood and Building material: ± 2%
Temperature: ± 2°C ( ± 4°F )
8 calibration scales(A, B, C, D, E, F, G, H), based on different types of wood
materials.
Hold function to freeze the measurement.
Memory function: If you have held the value and then turn off the instrument,
you will see the same value when you turn on the instrument again.
Low battery indication(< 2.2V).
Automatic Power-Off in 3 minutes without operation.
Power: 2xLR03 AAA 1.5V batteries.
Operating Environment:
Temperature: 0 - 40°C
Relative Humidity < 85%
INSTALLING BATTERY:
1. Remove the battery compartment cover.
2. Insert the batteries with the correct polarity.
3. Reattach the battery compartment cover.
REMOVING PROTECTIVE CAP:
To remove the protective cap, press the “ ” position and push the cap as
the illustration below to open the cap.
CORRECT
WRONG
OPERATION INSTRUCTION:
1.Press the “ ” button to turn on the instrument, press and hold the “ ”
button for about 3 seconds to turn off the instrument.
2.Selecting desired Measurement Mode:
a. After turn on the instrument, press the “ ” button to select desired
measurement mode.
The two measurement modes are as follows:
Wood moisture measurement mode (“WOOD” displays), building material
moisture measurement mode (“BLDG”display).
Wood moisture measurement mode has 8 calibration scales(A, B, C, D, E, F,
G, H), based on different types of wood materials.
Check the Calibration Tables first, and then press the “ ” button to switch
to the matched calibration scale.
b. After the desired measurement mode is selected, you can start
measurement.
c.Temperature measurement mode displays in Celsius temperature
measurement mode ( “°C”displays) and Fahrenheit temperature
measurement mode ( “°F”displays).
Press and hold the “ ” button 3 seconds to switch between °C and °F.
3.Performing Measurement
a. For temperature measurement, the display shows the present environment
temperature directly.
b. Before taking the first measurement check that the instrument is
functioning correctly.
For this you will need to use the test aid.
On the test aid there are two measurement holes as picture.
Switch to Wood moisture measurement mode (“WOOD” displays) and
choose A scale.
Insert the measuring pins into the measurement holes, the measuring
value on the display will show between 16.6% to 20.6%.
The instrument is workable when measured value was in the error range.
c.To perform moisture measurement, press both pins into the wood or
material to be measured, read the value on the display.
d. Measured value will appear on the LCD, and Red, Yellow and Green
LED color light indicate the moisture condition level at the same time.
There will a Beep sound when Red LED color light on.
Wood: GREEN: Low moisture (< 12%);
YELLOW: Mid moisture (12% - 15.9%);
RED: High moisture (16%-60%).
Building material: GREEN: Low moisture (< 17%);
YELLOW: Mid moisture (17% - 19.9%);
RED: High moisture (20%-33%).
4. Freeze the measurement
Press the “ ” button to saved measured value, the “HOLD” will show
on the screen. By pressing the “ ” or “ ” or “ ” button, the
measuring mode will get reactivated.
5. Automatic Power-Off feature
If you don’t operate the instrument (or the reading does not change) about
3 minutes, the instrument will be turned off automatically.
6.When the symbol “ ” appears, it indicates the batteries are low and
should be replaced.
MAINTENANCE:
The moisture meter has been designed to be a low maintenance instrument.
However, in order to maintain its performance, you must always follow these
simple directions:
• AVOID exposing the instrument to shock, continuous vibration, or extreme
hot or cold temperatures.
• ALWAYS attach the protective cap when not in use.
• ALWAYS keep the instrument free of dust and liquids.
• Check the battery regularly to avoid deterioration.
• ALWAYS remove the battery when storing the instrument.
• DO NOT attempt to change any part of the unit.
• DO NOT disassemble the instrument. This will void the warranty.
• Store the instrument in a dry location.
• After measurement, clean the probes and the case using a clean cloth.
1. Protective cap
2. Pins
3. Low Battery Indication
4. HOLD icon
5. WOOD icon
6. BLDG icon
7. 8 calibration scales(A-H)
8. Temperature value
9. Moisture value
10. Low moisture light
11. Mid moisture light
12. High moisture light
13. Hold button & °C/°F
conversion button
14. A-H option button
15. Mode & ON/OFF Button
16. Battery Case (Back of Unit)
Test aid
Measurement holes
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2
3
4
5
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