SINNOWA BS3000S - AD Auto Zero

BS Series Multitest Analyzer
6
3.4.3 AD Auto Zero
Select AD Auto Zero from the main menu, the screen will show as below:
Press Push to aspirate distilled water and click Continue
And then click read
When AD auto zero, put the aspiration pipe into distilled water, press push, then the
instrument begin to zero. The interface will show Gain coverage, AD value and offset
value, if the value is out of range, there will be alarm reminding.
Attention:
 AD auto zero is that the instrument is based on water to measure the initial light
intensity of different wavelength. The gain coverage, AD value and offset value
are calculated together to obtain absorbance. This step is very important; users
should do this step at each starting the instrument.
 AD auto zero for flow cell need more distilled water, it is recommended that the
aspiration pipe should insert into distilled water to ensure no bubble when AD
auto zero.
 It is also available to use cuvette for AD auto zero; the distilled water in the
cuvette should reach more than 10mm away from the bottom of the cuvette.