Parameter Measuring range/Measured value
Specific conductivity: 0.001 µS/cm ... 200 mS/cm
Specific electrical resistance: 5 Ωcm ... 1000 MΩcm
TOS (total dissolved solids): 0 ... 9999 ppm (mg/l)
SAL (salinity): 0.0 ... 70.0 ‰ (g/kg)
19.2 Technical data
Tab. 26: Technical data
Description Technical data
pH resolution: 0.01
ORP voltage: 1 mV
Temperature: 0.1 °C
Amperometric analysis (chlorine etc.): 0.001/0.01 ppm, 0.01% vol., 0.1% vol.
Precision: 0.3% based on the full-scale reading
pH/ORP measurement input: Input resistance > 0.5 x 1012 Ω
Correction variable: Temperature via Pt 100/Pt 1000
Temperature correction range: 0 … 100 °C
pH correction range for chlorine: 6.5 … 8.5
Interference variable: Flow via mA or frequency
Control action: P/PID control
Control: 2 bidirectional controllers or 1 bidirectional controller and
1 monodirectional controller
mA output signal: 2 x 0/4 ... 20 mA galvanically isolated, max. load 450 Ω,
range and assignment (measured, correction, control
variable) can be set
Control output: 2 x 2 pulse frequency outputs for control of metering
pumps
2 relays (limit value, 3-point step or pulse length control)
Measuring range and technical data
177
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