User guide

4.5 Measurement parameters
732 IC Detector / 733 IC Separation Center
99
>PARAM/detector
temp.coeff.: 2.5 %/°C
1.5, 2.5 %/°C
Temperature coefficient
The temperature coefficient is used to take into account
the temperature dependence of the conductivity meas-
urement. Two values can be selected:
1.5 %/°C Temperature coefficient for cations
2.5 %/°C Temperature coefficient for anions
When the thermostatting of the measuring cell is
switched on (thermostat display 77 lit up), the conductiv-
ity κκ
T
measured at the set operating temperature
(25...45 °C) is automatically converted to the conductiv-
ity κκ
20
at the reference temperature 20 °C.
>PARAM
>PARAM/analog output
Settings for the analog output
The output signal at the two analog outputs 1111 (0…1 V) and
1212 (0…10 mV) is determined by the parameter "full scale"
(see above).
>PARAM/analog output
polarity: +
+,–
Polarity of the output signal
Selection of whether a positive or negative full-scale
range should be outputted
+ Positive polarity (0…+FS)
– Negative polarity (0…– FS)
>PARAM/analog output
offset: 0 %fs
0, 10, 50 %fs
Zero point offset
Offset of the zero point of the conductivity.
0 %fs No zero point offset.
10 %fs Offset by 10% of the full-scale range;
at the analog output the signal
–0.1 FS…+0.9 FS (+) or
0.1 FS…–0.9 FS (–) is outputted.
50 %fs Offset by 50% of the full-scale range;
at the analog output the signal
–0.5 FS…+0.5 FS (+) or
0.5 FS…–0.5 FS (–) is outputted.
>PARAM/analog output
damping: off
on, off
Damping
on Damping to reduce disturbing pulsations
or a high noise level. Standard solutions
and samples must both be recorded with
damping as this can influence the peak
heights.
off Damping switched off (normal condition
with pulsation-free and constant flow
pumps).