Cr/Ci Analysis Inputs (Conductive/Inductive Conductivity) - JUMO AQUIS touch S Assembly Instructions Manual

10.6.6

CR/Ci analysis inputs (conductive/inductive conductivity)

Configuration point Selection/
Description
Compensation tem-
perature
Reference temp.
Filter Time Constant
nominal
cell constant
Cell type
Pollution
detection
Wire break
detection
Open: Device Menu > Configuration > Analog Inputs >
Analysis Input 1 to 4 > Configuration
setting option
up to 15 text characters
Selection from
analog selection
15 to 30 °C
0.0 to 25.0 s
for CR: 0.01 to 10 cm
for Ci: 4.00 to 8.00 cm
2 electrodes
4 electrodes
OFF
ON
OFF
ON
Explanation
Designation for the input
Analog input of the compensation thermometer
for temperature-compensated conductivity mea-
surement
required only for conductivity measurement
with "TDS", "TC linear" or "TC curve" tem-
perature compensation:
The temperature at which the conductivity value
displayed was set
Optimization of measured value updating
The higher the value of the filter time const., the
slower the measured value is updated.
-1
nominal cell constant of the conductivity sensor
-1
(can be read from the sensor nameplate)
If an ASTM test certificate showing precisely-
measured cell constants is available, in addition
to entering the nominal cell constants the relative
cell constants of all measuring ranges in the cal-
ibration values must be manually entered (cf.
Chapter "Manual entry of calibration values",
page 50). The relative cell constants must be cal-
culated from nominal cell constants (nameplate
for the sensor) and measured cell constants
(ASTM test certificate):
(measured cell constant × 100 %) ÷ nominal cell
constant = relative cell constant.
Calculation example:
nominal cell constant = 0.1 cm-1
measured cell constant = 0.1014 cm
rel. cell constant =
-1
(0.1014 cm × 100 %) ÷ 0.1 cm
For conductivity sensors with 4 electrodes, pollu-
tion detection is made available.
possible only for conductive conductivity
measurement in a 4-wire circuit:
When this function is activated, a sensor alarm is
triggered in case of soiling.
possible only for conductive conductivity
measurement:
When this function is activated, a sensor alarm is
triggered in case of a sensor wire break.
10 Configuration
-1
-1
= 101.4 %
23