IM 12B6C2-E-H
1. What is the display routine?
The second line in the display is intended to
be used to:
–
show actual status
–
show messages
–
show errors
When delivered from the factory the EXA
PH200 shows the temperature on the
second line.
You can make the instrument show a diffe-
rent parameter on the second line by selec-
ting it from the list at the right.
2. What can you read?
Temperature
actual value
Output signal
actual value
Potential
actual value
Asymmetry
measured value
Slope
measured value
Impedance
actual value
Reference impedance is an actual value.
The choice of temperature units is done
from the Service level.
Reference impendance is shown to indicate
the status of the diaphragm of the reference
electrode. Glass electrode impedance is also
checked but not shown.
The release version is an indication for the
servicing of the instrument and cannot be
fixed in the display.
3. Example
To check the value of the output signal
(4...20 mA) it is displayed on the second
line.
Measuring range
2 - 12 pH
Ouptut signal
4 - 20 mA
Process value
8.5 pH
Output value
4.4 mA
When the second line is changed to display
output the current signal is visible all the
time.
Whenever HOLD is activated the value on
the display is frozen to the programmed
value (using the FIXED setting).
Pressing MODE will take you back to
measuring and the temperature will show
again.
4. Further possibilities
0.01 pH/0.1 pH display resolution.
(See §7-6).
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5-3. Selecting a value to display
