Dryfast DM100 Manuale di istruzioni - Pagina 3
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ENGLISH USER MANUAL
EN
Operating Manual
This operating manual may not be reproduced, duplicated or
distributed without written permission from the manufacturer .
Important: Read the manual carefully before use . Keep the
manual for future reference
General information
Product: Moisture meter
Type: DM100
The moisture meter mainly measures the moisture content
through non-destructive humidity sensor . The maximum pene-
tration depth is about 20-40 mm, which is suitable for measuring
concrete, wood,floor, wall and other building materials .
The water for solidification in the production process of concrete,
mortar and plaster can only spread after 1 to 2 months . Even if
doors and windows are well insulated, water and moisture can
still penetrate Even after a high-water level or flood, the water
trapped in the masonry is released very slowly, so is the water
contained in the stored materials .
The water (water vapor) released from some parts of buildings
or materials is absorbed by the surrounding air, and the water
content increases, eventually leading to corrosion, mildew, decay,
paint peeling and other unnecessary damages .
•
The humidity level shown is the average value determined
by the humidity on the outer surface and inside the material .
If there is any visible surface moisture or water, please wipe
it off and allow the surface to dry for a few minutes before
starting the measurement .
•
The measuring depth of the devise is 20 - 40 mm . If the
thickness of the material is less than 20 mm, the measured
value of humidity level may be inaccurate due to the adjacent
materials .
•
Other factors can also affect the measurement . Before
measurement, any paint, residue, dust, etc . on the corres-
ponding surface must be removed .
•
If the ball head is fixed at a corner (such as a tile joint), the
measured value is usually higher .
•
The measuring head does not measure a single surface, so
the head must be 80 - 100 mm away from the corner . When
measuring, keep your hands away from the measuring head,
in case the humidity of your hands may affect the results .
•
If the measured material contains metal (such as nails,
screws, leads, metal pipes, etc .) and is located in the
measuring area of the sensor, the measured value suddenly
increases due to strong reflection .
•
Place the humidity sensor on smooth surfaces . Rough
surfaces lead to inaccurate measurement results .
•
The density of the measured material plays an important role
in the measurement results .
•
The measured values increase with their respective densities .
•
The humidity sensor must be held at right angles directly to
the surface to be measured .
Safety warnings
•
This product is not a toy . Keep children and animals away .
•
Keep the product far away from high temperature, direct
sunlight, strong vibration, humidity, corrosive gases or
objects .
•
If the product is obviously damaged or abnormal, please stop
using it to avoid the error of measurement data, which will
lead to accidents .
•
If the operating environment of the product changes
suddenly, the measurement results may be inaccurate, so
put the product down for a time before use to balance the
temperature . Please ensure the correct polarity when loading
the battery and take it out for long-term storage to prevent
from leaking .
•
Do not disassemble the product to avoid malfunction .
Callibration
•
After starting the unit for the first time, put it in the air for
calibration, so that the non-destructive humidity sensor does
not touch any object .
•
The minimum distance from any surface or your hand to the
ball head of the sensor should be 80-100 mm .
•
Press MEAS to start the calibration procedure . During
the calibration, the LCD screen displays ''CAL'', and the
calibration is completed after the product makes two beeps
in about 3 seconds . After calibration, the LCD-shows the
current humidity level, and the calibration value should be
''0'' . If not, please shut down and restart the unit and repeat
the calibration procedure .
Note:
If the product has not been calibrated, do not change the position
of your hand in the subsequent measurement . The measurement
calibration and measurement must use the same hand position,
because the change of your hand position relative to the ball head
of the humidity sensor can lead to measurement errors .
The calibration must always be carried out again after each new
switch-on as well as each change of the measuring point or the
measured object .
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