Endress+Hauser Liquisys M CCM223 - Current Outputs

Liquisys M CCM223/253 Commissioning
Endress+Hauser 51
7.4.4 Current outputs
Use the "Current output" function group to configure the individual outputs. You can enter
either a linear characteristic (O3 (1)) or a user-defined current output characteristic in
conjunction with the Plus Package (O3 (3)). Exception: if you have chosen a "continuous
controller" for current output 2, you cannot enter a user-defined current output
characteristic for this current output.
In addition, you can also simulate a current output value (O3 (2)) to check the current
outputs.
1
0 4 8 12 16 20
2
Cl
[mg/l]
[mA]
Δ
S
i
g
n
a
l
Δ[mA]
A0002021
 35 User-defined current output characteristic (example)
The current output characteristic must increase or decrease very monotonically.
The distance per mA between two table value pairs must be greater than:
Sensor/measurement parameter Minimum distance per mA
CCS120 0.005 mg/l
CCS140/240 0.01 mg/l
CCS141/241 and 963 0.003 mg/l
pH pH 0.03
ORP 5 mV
Temperature 0.25 °C
The values for the sample characteristic →  35 are entered in the following table. The
distance per mA is calculated from Δ signal / Δ mA.
Current output 1 Current output 2
Value pair Cl[mg/l] Current
[mA]
Distance
per mA
.....[] Current
[mA]
Distance
per mA
1 0 4
2 0.5 14 0.05
3 2 20 0.25