31
16. Press
ENTER
to select
Calibrate
.
A reverse font (light background
with dark characters) will appear
to indicate that the reading can be
adjusted.
Turbidity WB
0.99
NTU
Scan Sample
Calibrate
12:00:00 001/500
17. Press
or
to scroll to
the concentration of the standard,
1.00 in the example.
Use the value
on the turbidity standard bottle label
as the target
. Note: The allowable
adjustment is ±25%. If the allowable
adjustment limit is reached,
“overrange” wil be displayed.
Turbidity WB (N)
1.00
NTU
Scan Sample
Calibrate
12:00:00 001/500
18. Press
ENTER
to select
Calibrate
. Two
menu choices will be off ered,
Set
Calibration
and
Factory Setting
.
Calibrate Menu (N)
1.00
NTU
Set Calibration
Factory Setting
12:00:00 001/500
19. Press
ENTER
to select
Set Calibration
and save the calibration. Press
or
to scroll and select
Factory Setting
to revert to the
factory calibration. The meter will
momentarily display
Storing...
and
return to the
Turbidity-Without Blank
menu. The calibration has now been
saved and the meter can be used for
testing. The standard should never be
poured from the tube back into the
bottle.
Turbidity WB
Scan Blank
Scan Sample
12:00:00 001/500
NOTE: For the greatest accuracy during the calibration procedure, be sure that after the
meter is blanked and the blank is scanned as a sample, the reading is 0.00. If not, reblank
the meter and scan the blank again until it reads 0.00. When scanning the calibration
standards as the sample, scan the calibration standard three times removing the tube
from the chamber after each scan and reinserting the tube in the chamber with the same
orientation. The readings should be consistent. Use the last consistent reading to calibrate
the meter. If the readings are not consistent, avoid using an aberrant reading to calibrate
the meter.
CALIBRA
TION
