Measuring Procedure - METRICA 60274 Caractéristiques Techniques, Instructions De Montage Et De Service

3 - Description
3.1 Sensor tips
3.2 Sensor
3.3 Symbols for "search mode"
3.4 Display
3.5 Connector for sensor
3.6 Led Colored
3.7 Plus key / Hold
3.8 Minus key / Zero
3.9 button selection
3.10 Power button
3.11 battery cover
3-4
3-6
3-7
3-9

4 - Measuring procedure

4.1 Depress the power key and release to power the meter
4.2 To check if the material code is right by pressing and releasing the select key.
Such code can be changed by the Plus/Hold key or Minus/Zero key when the "cdxx" is on the display.
Here "cd" is the abbreviation for "code" and "xx" is the material no. If keep depressing the Plus/Hold or
Minus/Zero key, the material code will step into next code about every second and releasing it till the
material code is right.
4.2.1 Code selection for the Pin mode
The material code for the Pin type mode is listed in the table on page xx.
Please select the standardcode"cd00" if the material to be measured is not listed in the table or
to ascertain its material code by the standard oven-drying method.
3-1
3-2
3-5
3-3
3-8
3-10
3-11
4.2.2 Code selection for the search mode
The standard material code for the search mode is "cd10" which is suitable for measuring the
material whose density is like than of pine, fir, oak etc. The user can carry out the accurate measu-
rement by selecting one material code between "cd10" and "cd20". The greater the density of the
material to be measured, the larger the material code to be selected. For measuring moisture in
concrete wall, the user can select the code around "cd18".
4.2.3 Factors affecting the choice of material code
There many factors to effect the material code, for instance, different places, different soil even if
in a same place will lead to different code for a same material. The better way to ascertain the
material code, is based on standards test by oven-drying be measured. The code by which the
measuring results are closed to those of over-drying method is the right code. Write down the code
for such material for later use.
4.3 Moisture Measurement
Check which operational mode the instruments is in by looking at the symbol " (°) in the display . It is in a Search
mode if the symbol "(°)" shows on the display. And it is in a Pin mode if without this symbol on the LCD
4.3.1 Measurement if in a Pin mode
Push pins firmly into the surface of the material about 6 mm deep at the required point.
4.3.2 Measurement if in a Search mode
Place the search probe against the surface of the material such as wall, floor etc. at the point of
measurement.
4.3.3 Read the moisture level value from the display and note the moisture condition of the material from
the color coded LED
4.3.4 To hold the max. value during measurements just depress the HOLD key till the symbol "max"
appears on the display.
To display instant values just depress the HOLD key again till the symbol "max" disappears on the
display
4.4 Zero calibration
The zero feature enable the user to compensate for the effect of changes in both temperature and humidity.
Zero calibration should be carried out independently in different modes.
4.4.1 Zero calibration in a pin mode
Press the Power key to switch the meter on. Be sure it is in a pin mode. If not, change it in the pin
mode (See 4.5). Let the pins of the meter touch nothing except air. And press Minus/Zero key to
make the meter display "0" if other digits on the display. The meter is now zeroed
4.4.2 Zero calibration in a search mode
Be sure the meter is in a pin mode. If not, change it to the search mode (See 4.5). Keep the search
probe of the meter away from the surface of any material at least 15 cm. And them press Minus/Zero
key to make the meter display "o" if other digits on the display. The meter is now zeroed
4.5 How to change the measurement mode?
Press the Select key and not release it until the letters "CH" appear on the display. The mode has changed
to the other mode after releasing the Select key. Which mode is in now, See 4.3
5 - Alarm limits
5.1 There is a coded colored LED indicating the status of moisture.
It is controlled by 2 alarm limits. The factory setting are as follow.
AL1=13 and AL2=18
If the reading <AL1 the green LED is on
If the reading >AL2 the red LED is on
If the reading lies Between AL1 and AL2 the Yellow LED is on.
User can Change the alarm limits when as per their intention.
5.2 How set the alarm limits
5.2.1 Depress Select key and not release it till "AL1" "AL2" appears on the display.
It is about 7 or 9 seconds from starting depressing select key.