TDX MT1902 User manual

WOOD/BUILDING MATERIAL
MOISTURE METER (MT1902)
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: LCD 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.
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.
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” displays).
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) or Fahrenheit temperature
measurement mode ( “°F” displays).
Press “ ” button 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, there will a Beep sound when
the measured value greater than a certain value.
Wood: ≥16%.
Building material: ≥20%.
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.
CORRECT
WRONG
1. Protective cap
2. Pins
3. Moisture value of
building material
4. Moisture value of wood
5. Temperature value
6. Moisture value
7. Low battery indication
8. HOLD icon
9. WOOD icon
10. BLDG icon
11. 8 calibration scales(A-H)
12. Hold button
13. °C/°F conversion button
14. Right arrow button
(A-H option button)
15. Mode & ON/OFF button
16. Battery case (Back of Unit)
1
2
3
4
7
8
9
10
12
15
16
14
5
6
11
13
Measurement holes
Test Aid

Calibration
Tables for Wood
NOTES
The calibration data in this table are
based on standard tests by oven-drying
of commercial samples of the various
wood species, between 7% and fibre
saturation. Above fibre saturation point
(25%-30%) readings are approximate
only and generally apply to wood that has
dried and been re-wetted.
The instrument is calibrated for wood at
20°C (68°F). If the temperature of the wood
varies by more than 5°C, the meter
reading can be corrected approximately
by adding ½% for every 5°C below 20°C or
subtracting ½% for every 5°C above 20°C.
Readings higher by 1%-2% may be
obtained where wood has been
impregnated with a water-borne
preservative.
High readings obtained with some
ply-woods of peculiar composition
must be treated with caution.
Botanical Names of Timbers
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