8.1.6 Fluoride Measured Variable
Fluoride Measured Variable
When measuring fluoride as the meas‐
ured variable, the sensor signal is con‐
verted into a 4 - 20 mA signal by a FPV1
or FP100V1 measuring transducer,
depending on the measuring range. The
measuring transducer is connected to the
controller's mA input. The REFP-SE refer‐
ence sensor is connected to the meas‐
uring transducer using a coaxial cable
with an SN 6 plug.
FPV1 measuring transducer: Measuring
range 0.05 ...10 mg/l.
FP100V1 measuring transducer: Meas‐
uring range 0.5 ... 100 mg/l.
Measuring range of the measuring trans‐
ducer
Select the measuring range. The meas‐
uring range is printed on the nameplate of
the measuring transducer. An incorrect
measuring range will lead to an incorrect
measurement.
Temperature compensation
This function is used for compensation of
the temperature influence of the process
on measurement.
Temperature: [Off] / [Manual] / [Automatic]
n
[Off]
switches the process tempera‐
ture setting off
n
[Manual]
makes possible a manual
specification of the process tempera‐
ture
n
[Automatic]
uses a measured process
temperature. Automatic measurement
of the temperature using the tempera‐
ture sensor, e.g. Pt1000. For pH,
CDP and fluoride, temperature com‐
pensation can be switched
[ON]
or
[OFF]
in the menu.
8.1.7 Peracetic Acid
Peracetic acid measured variable
Peracetic acid as a measured variable is
measured via one of the two mA sensor
inputs. Temperature compensation is per‐
formed in the sensor. An additionally con‐
nected temperature sensor is only used
for display and data recording with a data
logger and can be issued on a mA-output
via field bus or web server.
Measuring range of the sensors
Select the measuring range. The meas‐
uring range is given on the sensor name‐
plate. An incorrect measuring range leads
to an incorrect measurement.
Setting measured variables
58
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