Select The Measuring Method - wtw inoLab 740 Operating Manual

inoLab 740
AutoRead
(drift control)
ba75446e05 07/2010
The AutoRead function (drift control) checks the stability of the
measurement signal. The stability has a considerable effect on the
reproducibility of the measured value. The pH/ION measuring module
allows a setting of the AutoRead criterion (see section 7.2.4).
1 Call up the ISE measuring mode with
2 Immerse the electrode in the test sample.
3 Activate the AutoRead function with
The current measured value is frozen.
4 Start AutoRead with
value is reached. The stable measured value is transmitted to
the printer or interface.
5 If necessary, start the next AutoRead measurement with
6 To terminate the AutoRead function: Press the
Note
Before accepting a measured value, make sure that it is stable for a
longer period of time.
In order to accept the current measured value without waiting for the
end of the AutoRead function, press
7.4.1

Select the measuring method

For the inoLab 740 pH/ION measuring module.
The following methods are supported:
Standard Addition (Std Add)
Double Standard Addition (Std Add ++)
Standard Subtraction (Std Sub)
Sample Addition (Smp Add)
Sample Subtraction (Smp Sub)
Blank value Addition (Bw Add)
m
a
.
h
g
. flashes until a stable measured
g
.
Ion concentration
.
g
.
a
key.
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