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the oxygen content in surface water, sewage and for application in wastewater treatment. AM 40 features simul-
taneous measurement of oxygen and temperature, high measuring accuracy, multi function display, easy air cali-
bration, integrated data logging system and a rugged watertight IP 65 enclosure.
8.2 Composition AM 40
AM 40/Set comes completely with the accompanying dissolved oxygen sensor MF41N/AM40 and accessories in
a protective case. This combination operates in accordance with the standardized requirements for determination
of dissolved oxygen; electrochemical probe method acc. ISO 5814:1990 resp. German version DIN EN ISO
5814:2013. The instrument in connection with the sensor indicates the mass concentration of dissolved oxygen in
aqueous solutions in mg/l and the oxygen saturation index in percent saturation as well as the relevant tempera-
ture simultaneously.
The description of the used dissolved oxygen sensor is listed in the separate instructions for use for the sensor.
8.3 Configuration AM 40
The entire structure of the menu is displayed graphically in chapter 3.2.
Open with
+ password the configuration menu.
Select the menu item you would like to configuration.
data logger
temperature
main value
general
back
8.3.1 Configuration of the fix temperature
For calculating the analysis parameter O
ature of the measuring and of the calibration fluid must be measured or a fix temperature must be configured. If
the fix temperature is activated this will be used for the temperature compensation. In this case the message Fix
appears in the right upper display corner.
For configuration the fix temperature do the following steps:
1. open the menu „temperature"
2. activate / deactivate the fix temperature in the menu item „fixed temp."
3. enter the fix temperature value in the menu item „temp.-value"
Select the position you would like to change by using the buttons
Press the
-button to accept and save the entry.
To cancel the input dialogue without saving the value press
8.3.2 Configuration of the main value
It is possible to replace the main measuring value and the second measuring. If not different ordered in the fac-
tory-provided version the main measuring value is the oxygen saturation in % and the second measuring value is
the oxygen concentration in mg/l.
For configuration of the main measuring value do the following steps:
1. open the menu „main value"
2. select the main measuring value
%
mg/l
oxygen concentration in mg/l
a temperature compensation is always necessary. For that the temper-
2
main measuring value
oxygen saturation in %
or
+
.
second measuring value
oxygen concentration in mg/l
oxygen saturation in %
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and change with
or
.
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