BERTHOLD TECHNOLOGIES LB 444 - Replacing the Evaluation Unit LB 444

04/03 347 LB 444
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10.6 Replacing the Evaluation Unit LB 444
To replace the entire LB 444 evaluation unit, please proceed as follows:
1. Connect new evaluation computer.
2. Enter data using the set-up protocol and date of the original
set-up.
3. In submenu Calculate (menu Calibrate), select the calibration mode.
4. For one-point calibration
, enter the absorption coefficients and start calibration proc-
ess with <enter> and <more>.
5. For two
or multi-point calibration, select the calibration mode and then push <more>
to start calibration.
6. Start measurement with <run>.
7. Enter current date.
If the count rates in the individual code numbers were not entered in one day but over a
longer period, please proceed as follows to ensure adequate source decay correction:
1. Perform steps 2. to 7. for the count rates read-in at calibration date 1.
2. Enter the value recorded at a later time (count rate, density, temperature).
3. Enter current date.
4. Stop measurement process by pushing <run> again.
5. Start calibration process: select calibration more with <enter> and then push
<more>.
6. Start measurement again with <run>.
Example:
Calibration point Count rates Density values Temperatures
in °C
Date
1 23 205 1.1 50 01.02.96
2 20 319 1.2 55 01.02.96
3 21 631 1.15 45 01.04.96
4 17 724 1.3 52 01.04.96
5 22 253 1.12 58 01.10.96
Date of replacement: 01.04.97
1. Enter date 01.02.96
2. Enter values 1 and 2
3. Select calibration mode with <enter> and then push <more>
4. Push <run>
5. Enter date 01.04.96
6. Enter values 3 and 4
7. Enter date 01.10.96
8. Enter value 5
9. Enter date 01.04.97
10. Stop measurement with <run>
11. Select calibration mode with <enter> and then push <more>
12. Start measurement with <run>.