Hach TL2350 Manuel D'utilisation De Base page 19

6.3.2 Turbidity measurement procedure
To include an operator ID and sample ID with the measurement data, refer to
on page 13 and Add operator IDs
1. Push Login and
select the applicable
Operator ID. If login
is not necessary, go
to step 3.
5. Clean the sample
cells with a soft, lint-
free cloth to remove
water spots and
fingerprints.
on page 12.
2. Push Login and
enter the password.
Push OK.
6. Apply a small
bead of silicone oil
from the top to the
bottom of the sample
cells.
3. Push Sample ID.
Select the applicable
sample ID, then
push Select. The
selected sample ID
shows on the
display.
7. Use the oiling
cloth provided to
apply the oil equally
to the surface of the
sample cells.
Remove the excess
oil. Make sure that
the sample cells are
almost dry.
Add sample IDs
4. Rinse a clean,
empty sample cell
two times with the
solution to be
measured and drain
to waste. Fill to the
line (about 30 mL)
with sample and
immediately put the
cap on the sample
cell.
8. Gently and slowly
invert the sample
cell to fully mix the
sample. Be careful
not to add air
bubbles.
English 19