wtw AmmoLyt 700 IQ, Руководство по эксплуатации

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AmmoLyt
®
700 IQ
3 - 7 ba75353e05 03/2006
Cal. procedure
(only in the NH4 and
NH4-N measuring
mode)
!
1 point standard (1)
!
1 point ref. (2)
!
2 point stand. (3)
!
Simple std. add. (4)
!
Double std. add. (5)
!
1-point calibration with a standard solu-
tion. The concentration of the standard
solution must be entered.
!
1-point calibration in the test sample
with independent determination of the
NH
4
+
concentration by a reference
measurement. The concentration of the
test sample determined in a reference
procedure must be entered.
!
2-point calibration using any two WTW
standard solutions. The concentration
of the standard solutions must be ente-
red.
!
A known concentration of standard
solution is added to the sample. The
NH
4
+
concentration in the test sample
is determined from the change in
potential.
!
A known quantity of a standard solution
is added to the test sample in two steps.
The NH
4
+
concentration in the test
sample is determined from the change
in potential during the first and second
standard addition.
Note: The calibration procedures are
described in detail in section
4.1 C
ALIBRATION
.
ORP offset
(only in mV measu-
ring mode)
-100 mV ... +100 mV You can set the voltage zero point here.
Initial calibration On
Off An Initial calibration is required when the
sensor is calibrated for the first time or
when an electrode or the entire combina-
tion electrode has been replaced. During
initial calibration, the basis for the evalua-
tion of the drift potential is determined.
Here you can select whether the next cali-
bration should be an
Initial calibration .
After the initial calibration has been carried
out, the setting for
Initial calibration auto-
matically switches to Off.
Menu item Possible settings Explanations