Xylem pHotoFlex/pHotoFlex Turb - Manual (Page 64)

Operation pHotoFlex / pHotoFlex Turb
64 ba75491d04 07/2006
Note
To keep the drift as low as possible, the time for aligning the cell while
pressing and holding the key is limited to 30 sec-
onds. After this time, the meter automatically starts measuring or cali-
brating.
Display if the
measuring range is
exceeded
If the measured value is outside the measuring range of the
pHotoFlex Turb, it is indicated on the display:
7 Align the cell:
! Marked cell
– Align the marking on the cell cap with the marking on the
cell shaft.
– Press and for a short time hold the
key until the measured value is displayed.
! Unmarked cell (see page 62)
– Press and hold the key.
– Slowly and in small steps turn the cell by one complete
rotation (by 360 °). After each step wait for a short time
until the displayed measured value is stable.
– Turn the cell back to the position with the lowest mea-
sured value.
8 Release the key.
Measurement starts. The measured value is displayed.
9 Repeat the steps 2 to 8 for further samples.
Turbidity
157.0 FNU
NTU
01.02.05 15:12
Turbidity
> 1100 FNU
NTU
01.02.05 15:12