wtw Turb 550, Руководство по эксплуатации

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Operation
29
Note
It is only possible to switch the instrument off after the cali-
bration has been finished.
Notes
l The measuring instrument has an automatic 1 to 3 point
calibration. This means that you can also perform calibra-
tion using one or two standards instead of all three.
l
1 point and 2 point calibrations are makeshift solutions.
They do not reset the calibration timer. After performing a
calibration using one or two standards, press the
key
and the measuring instrument returns to its normal mea-
suring mode.
l
After a 1 point calibration, measuring is only possible in
7 Press the key.
The Store display flashes for approximately 3 sec-
onds. The number 10.0 (NTU) appears in the upper
display line. The number 0.02 (NTU).appears in the
lower display line
8 Insert the 0.02 NTU calibration standard in the cell
shaft
9 Align the cell and wait for a stable measured value
10 Press the key.
The calibration is complete and the instrument re-
turns automatically to the normal measuring mode.