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4.5.2 Free Cal
1. Press and Hold
MENU
key for 3 seconds.
You will see ID
– Identification; Use the ▲ or ▼ keys to
select calibrate then press
READ
, use the same ▲ or ▼
keys to select Free Cal, then press
READ
to enter it.
2.Place 0.10 NTU Standard vial into the instrument *.
Press
READ
and wait for the result;
3. If necessary use ▲ or ▼ to change the displayed value
for this standard, press and hold
SAVE
for 3 seconds.
"Saving
" will be displayed
.
4.After the value is saved, the display returns to the
"Calibrate"
menu
.
5.
*
After calibrating the 0.1 NTU standard, perform the calibration of the other standards: 20 NTU, 100
NTU and 800 NTU.Recalibrate the 0.1 NTU for better accuracy.
If you have chosen the 0.00 to 40.0 NTU function, follow the previous step for the desired
standard.
6.
Recalibrate the 0.1 NTU for better accuracy.
NOTE 1: Ailing the vial mark with the instrument arrow.
NOTE 2: If an error message displays, check the standards and repeat the previous steps.
NOTE 3: After the calibration, perform standard readings for verification, and if needed repeat
the calibration procedure.
NOTE 4: After calibrating 4 points: 0,1 NTU, 20 NTU, 100 e 800 NTU. Its recommended to
recalibrate the 0,1NTU point.
