Hach Ultra MET ONE 227, Руководство пользователя

Страница: 26 / 59

25
Operation
A 10-second period is more likely to give a good representation of the actual
concentration because it covers a longer period. Longer periods allows high particulate
levels to contaminate the sensor (refer to
Figure 19 ). Use a shorter period for
unknown environments.
To program the MET ONE 227 particle counter for the Concentration mode:
1. Press
2 (DSP)
on the main screen.
2. Press
2 (NXT)
to display the Count mode screen (refer to Figure 20 ).
3. Press
1 (PROG)
to enter the Program mode.
4. Press
2 (INC)
or
3 (DEC)
to select the Concentration mode.
5. Press
4 (RET)
to display the Period screen in the Program mode (refer to Figure 21
on page 26 ).
Figure 19 Concentration mode (10-second period)
1 10-second period 3 Recalculation and display update
2 Seconds 4
Figure 20 Count mode screen