Checkline BM - Manual (Page 4)

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2.3 Determination of reference moisture content
Collect sample materialnot used in Samples 1 and 2. This will be used to
determinate the reference moisture content according to the dry method
“CEN/TS 14961:2005.”
1. Weigh the sample accurately.
2. Put the sample in an special oven at 105 °C until it no longer loses
weight.
Now the reference moisture content can be calculated as follows:
Mn: Mass with average moisture
content
Mt : Mass of the dried sample
%F: Calculated moisture content
%Fneu
Actural moisture content of the sample
Gewmom Actural weight of the sample
Gref Sample weight before sample preparation (dry method)
%F With dry method certain reference moisture content
%F =
Mn – Mt
x 100
Mn
NOTE: The dried sample material may no longer be used for measuring
purposes
2.4. Determination of the material moisture
Now that you have determined the reference moisture content of your
sample, you can calculate the actual moisture content of the sample,
using the formula below:
%Fneu =
Gewmom – Gref *
Gewmom
100
100 – %F
100
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2.5 Unlock the BM2
From this menu,, you can access the
Calibrate, Password and Reset functions
of theBM2 and temporarily unlock them.
NOTE: Functions remin unlocked until
the power is turned off, then re-lock at
the next start up.
IMPORTANT: To access and modify
these features, you must enter the four digit super-user password. This
password is the serial number located near the factory settings. The four
digit serial number also appears under the menu item “Status” or when
the device is booting.
Unlocking Procedure
1. To access the “unlock” feature, press
the ( ) button repeatedly until you
reach the main menu.
2 . Press the ( ) or ( ) buttons to scroll
to “Options.” Press the ( ) button to confirn.
3. Press the 0…9 button until you have reached the correct number
Press the ( ) button to confirn.
4 . The character will be confirmed and the cursor will jump to the next
position.Repeat Step 3 until you have entered the four numbers of
your password , then press the (
) button again to confirn.
NOTE: Press the ( ) and ( ) successively to abort the
password check. The 0…9 button also contains a fast forward
function, starting when yourpress the 0…9 button several times.
The character is comfirmed automatically after a few seconds
2.6. Change the calibration curve name
Once the device is unlocked, the menu item “Material Calibration”
becomes available.
A list with all calibration curves is shown on
the display. Choose an “empty” calibration
curve, or a curve you don´t need.