Metrohm 850 Professional IC Cation Manual - Manual (Page 92)

6.10 Column thermostat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
84 ￭￭￭￭￭￭￭￭
850 Professional IC– Cation
6.10 Column thermostat
Type Peltier technique thermostat for two intelligent separation columns
Adjustable tem-
perature range 0…+ 80 °C, in increments of 0.1 °C
Heating Ambient temperature +50 °C
Cooling Ambient temperature –20 °C
Temperature
reproducibility ± 0.2 °C
Stability < 0.05 °C
Heating up time < 30 minutes from 20 to 50 °C
Cooling time < 40 minutes from 50 to 20 °C
6.11 Conductivity measuring system
Type ￭ Microprocessor-controlled Digital Signal Processing (DSP technol-
ogy)
￭ Intelligent detector with 6 reference chromatograms
Measuring range 0…15000 µS/cm single range
Noise < 0.1 nS at 1 µS/cm
Drift < 0.2 nS/cm per hour
Measuring rate 10 measurements per second for optimum results without filtering
Resolution 0.0047 nS/cm
Baseline Noise < 3 nS/cm typical without suppression
Conductivity
detector
Cell volume 0.8 µL
Cell constant ￭ Individual calibration data saved in the detector
￭ adjustable range: 13.0…21.0 /cm
Electrodes Ring-shaped electrodes made from stainless steel
Materials in
contact with
eluent Chemically inert PCTFE
Maximum oper-
ating pressure 5.0 MPa (50 bar)
Cell tempera-
ture 20…50 °C in increments of 5 °C