7.3
Current output range selection
This function group is used to determine the range for the current output(s).
Field
Selection / range
Display
Info
Toggles the lower current
output limit between 0 and
4 mA
(out = current output)
0 – 20 mA
4 – 20 mA
Default:
4 – 20 mA
Current output 1:
Entry of turbidity or solids
concentration value for 0 or
4 mA (depending on lower
range setting)
(r. 0 = value for 0 mA with
0–20 mA)
(r. 4 = value for 4 mA with
4–20 mA)
0 ... 9999 FNU
0 ... 9999 ppm
0 ... 300 g/l
0 ... 200%
depending on meas.
range selected
Default:
0.00 FNU; 0.00 ppm
0.0 g/l; 0.0%
Difference
between 0/4
and 20 mA
values must
be at least
∆
0.1 FNU,
∆
10 ppm,
∆
1 g/l or
∆
0.1%.
Current output 1:
Entry of turbidity or solids
concentration value for
20 mA
(r.20 = value for 20 mA)
0 ... 9999 FNU
0 ... 9999 ppm
0 ... 300 g/l
0 ... 200%
depending on meas.
range selected
Default:
9999 FNU; 9999 ppm;
300.0 g/l; 200.0%
Current output 2 (option):
Entry of temperature
value for 0 or 4 mA
(depending on lower range
setting)
Temp. measurement:
–5.0 ... +70 °C
Default:
0 °C
°C symbol
appears on
display.
Difference
between 0/4
and 20 mA
values must
be at least
10% of MR,
i.e. 7.5 °C.
Current output 2 (option):
Entry of temperature
value for 20 mA.
Temp. measurement:
–5.0 ... +70 °C
Default:
40 °C
Note:
Falling assignments are possible (e.g. 4 mA
→
100 FNU, 20 mA
→
50 FNU).
The difference must not be less than the values specified in the table.
If outside the display range, the message “Ur” (underrange) or “Or” (overrange)
appears on the display.
liquisys CUM 252
Instrument configuration
Hauser
29
