Metrohm 732 IC Detector - Manual (Page 106)

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 11
11 (0 … 1 V) and
12 12 (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).