Hach TL2350 Manuel D'utilisation De Base page 17

13. Open the lid and
remove the vial from
the sample cell
holder.
6.2.5 Verification procedure
Use the verification procedure to measure the same Gelex or StablCal vial at regular intervals to
determine if the reading stays within the acceptance range. Use the Verification Setup menu to set a
reminder for the verification.
1. Push Login and
select the applicable
Operator ID. If login
is not necessary, go
to step 3.
14. Do steps 7–13
for the other
StablCal vials (from
lowest to highest
NTU standard).
When complete, the
measured values are
shown.
2. Push Login and
enter the password.
Push OK.
15. If Verify after
Cal is set to on, the
value of the
verification standard
shows. Push Read
to measure the
verification standard.
3. Push Verification.
The verification
standard value is
shown. Push
Options>Verification
Setup to change the
value of the
verification standard.
16. Push Store to
save the new
calibration data.
4. Clean the Gelex
vials with a soft, lint-
free cloth to remove
water spots and
fingerprints.
English 17