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10.6.4
pH/Redox/NH
Configuration point Selection/
Description
Electrode type
Redox unit
Filter Time Constant
Start of
display range
Display range end
Compensation tem-
perature
Glass electrode
monitoring
Reference
electrode monitoring
max.
reference impedance
Alarm/Event list
Sensor alarm
delay
analysis inputs
3
Open: Device Menu > Configuration > Analog Inputs >
Analysis Input 1 to 4 > Configuration
setting option
up to 15 text characters
pH standard
pH antimony
pH ISFET
redox
ammonia
mV
percent
0.0 to 25.0 s
-99999 to +99999
-99999 to +99999
Selection from
analog selection
off
minimum impedance
maximum impedance
min./max. impedance
On
Off
0 to 100 kΩ
off
event
alarm
0 to 999 s
Explanation
Designation for the input
Type of electrode connected
mV: unit for the redox potential
percent: concentration percentage that can be
derived from the redox measurement
This requires a two-point calibration.
⇨
Chapter 13.2.1 "Calibration methods for Re-
dox sensors", page 63
Optimization of measured value updating
The higher the value of the filter time const., the
slower the measured value is updated.
a
Upper/lower limit for labeling the scale when dis-
playing measured values, e.g. in recorder dia-
grams and bar graphs
a
Analog input of the temperature sensor for com-
pensation of the effect of temperature on the pH-
value measurement
configurable monitoring of pH glass electrodes
without impedance converter
minimum impedance: monitoring for soft short/
sensor failure
maximum impedance: monitoring for aging/pol-
lution/wire break
Activation of reference electrode impedance
monitoring
A high-impedance symmetrical connection is re-
quired.
upper impedance limit for monitoring a reference
electrode
Assignment of sensor failure notification to alarm
list or event list
The sensor alarm is suppressed for the set dura-
tion of the alarm delay.
10 Configuration
21
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