wtw AmmoLyt 700 IQ, Operating Manual

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Calibration and measuring AmmoLyt
®
700 IQ
4 - 10 ba75353e05 03/2006
Sampling and
determining the
reference concentration
You have to be in the measured value display to continue the calibra-
tion. Continue with sampling and determining the reference concentra-
tion as follows.
Note
The ammonium content has to be determined immediately after taking
the sample as the ammonium content changes very quickly due to the
micro organisms that are present. It is best to take the sample using a
syringe filter for transport to the laboratory or to stabilize it otherwise.
When adding stabilizing solutions, the dilution factor has to be taken
into account.
Operating steps during
step 2
1 Take a sample.
2 Determine the concentration of ammonium and potassium in
the laboratory. With this procedure, the potassium content of
the sample affects calibration as well as measurement.
3 In the Settings of sensors and diff. sensors menu (see section
3.4)
– Switch on the
Potassium compens. function and
– enter the potassium content.
4 Continue the calibration as follows with
c
.
Display Explanation
Cal.: 1 POINT REFERENCE (2)
Step 2: Enter reference concen-
tration
Reference voltage already deter-
mined Confirm with
g
.
Continue with ...
...Input ref. conc.
...New calibration
Here you can select whether you
want to repeat step 1 of the calib-
ration (
...New calibration ), or
enter the reference concentration
(
...Input ref. conc. ).
If necessary select the step with
d
.
Confirm with
g
.
Input reference concentration
Citation form/Value range Confirm with
g
.