Metrohm 820 IC Separation Center - Manual (Page 96)

6 Appendix
819 IC Detector / 820 IC Separation Center
88
Conductivity detector
Construction Thermostatted conductivity detector with 2 ring-
shaped steel electrodes
Measurement principle Alternating current measurement with following
cell supply:
Meas. Range Amplitude Frequency
100 µ S/cm 1 V peak 714 Hz
200 µ S/cm 1 V peak 5000 Hz
500 µ S/cm 1 V peak 5000 Hz
1 mS/cm 1 V peak 5000 Hz
2 mS/cm 0.5 V peak 5000 Hz
5 mS/cm 0.2 V peak 5000 Hz
10 mS/cm 0.1 V peak 5000 Hz
Effective cell volume 0.8 µ L
Cell constant 16.7 /cm; adjustable 13.0 … 21.0 /cm
Maximum back pressure
for measuring cell
5.0 MPa (50 bar)
Thermostatting Connectable dynamic control to adjustable oper-
ating temperature
Operating temperature Adjustable in steps of 5°C from 25 … 45°C
Max. temperature deviation ± 1.5°C
Temperature stability ≤ 0.01°C at constant ambient temperature
Parts and controls
Indicator Power LED 1
ON/Off switch At rear of instrument
Mains connection
Voltage 115 V: 100...120 V ± 10 %
230 V: 220...240 V ± 10 %
Switching with mains voltage selector in fuse
holder (see Section 2.4.1)
Frequency 50...60 Hz
Power consumption 70 VA
Fuse 5 mm Ø, 20 mm length
100 … 120 V: 0.63 A (slow-blow)
220 … 240 V: 0.315 A (slow-blow)
Interfaces
RS 232 interface Specifications, see Section 5.1
Remote interfaces Specifications, see Section 5.2
Analog output Specifications, see Section 5.3