Hach TL2360 Basic User Manual page 15

StablCal calibration procedure
1. Push Login and
select the applicable
Operator ID. If login is
not necessary, go to
step 3.
5. Apply a small drop
of silicone oil from the
top to the bottom of the
vial.
9. Push Read. Wait
1 minute for the
instrument to complete
the measurement.
2. Push Login and
enter the password.
Push OK.
6. Use the oiling cloth
to apply the oil equally
to the surface of the
vial. Remove most of
the oil. Make sure that
the vial is almost dry.
10. Open the lid and
remove the vial from
the sample cell holder.
3. Push Calibration.
The standard values for
the selected calibration
curve (and verification
standard, if Verify after
Cal is on) show on the
display. To select a
different calibration
curve, refer to
Configure the
calibration settings
on page 13.
7. Carefully and slowly
invert the vial to fully
mix the standard (do
not invert the <0.1 NTU
vial). Be careful not to
add air bubbles.
11. Do steps 4–10 for
the other StablCal vials
(from lowest to highest
NTU standard). When
complete, the
measured values are
shown.
4. Get the StablCal
standard that shows on
the display. Clean the
vial with a soft, lint-free
cloth to remove water
spots and fingerprints.
8. Put the vial in the
sample cell holder with
the triangle on the vial
aligned with the
reference mark on the
sample cell holder.
Push the lid closed until
a click is heard.
12. If Verify after Cal is
set to on, the value of
the verification standard
shows. Push Read to
measure the verification
standard.
English 15