ProMinent
®
Page 39
8.1.2 Brightness of LC display
You can alter the brightness of the LC display in the permanent display:
왘 Increase brightness using the down arrow key
or reduce using the up
arrow key .
8.2 Calibrating the pH meter
The pH probe condition is a key factor in the quality of the measurement. The
pH probe must therefore be re-calibrated at regular intervals with the aid of
buffer solutions. The DMT incorporates automatic buffer detection.
8.2.1 Automatic buffer detection
The tables for the following two buffer solution sets are contained in the
program memory.
Temp. ProMinent buffer table DIN 19266 buffer table
°CpH pH
0 4.05 7.13 10.26
5 4.04 7.07 10.17 4.00 6.95 10.25
10 4.02 7.05 10.11 4.00 6.92 10.18
15 4.01 7.02 10.05 4.00 6.90 10.12
20 4.00 7.00 10.00 4.00 6.88 10.07
25 4.00 6.98 9.94 4.01 6.86 10.01
30 4.00 6.98 9.90 4.01 6.85 9.97
40 4.00 6.97 9.82 4.04 6.84 9.89
50 4.00 6.96 9.75 4.06 6.83 9.83
60 4.00 6.97 9.68 4.09 6.84
70 4.01 6.98 9.62 4.13 6.85
80 4.02 6.99 9.55 4.16 6.86
We recommend that you use the buffer solutions obtainable from ProMinent
for calibration purposes.
Select a buffer set which is higher than the general setting (see chapter 7.1.7)
If V = automatic adjustment has been selected the corrected values are
saved and used for buffer detection during the subsequent calibration
process.
On delivery the program memory contains the ProMinent buffer table as the
V-table.
Operating the DMT
BA_DM_163_03_08_GB.p65 26.03.2008, 10:20 Uhr39
To Next Page
Loading...
Need help?
General
