Metrohm 732 IC Detector - Manual (Page 197)

7 Appendix
732 IC Detector / 733 IC Separation Center
190
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
Cell volume 1.5 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
operating temperature, indicated by LED
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
Display LCD, 2 lines, each of 24 characters
(character height 5 mm)
Indicators LED for auto-zero display
LED for display of program status
LED for overload display
LED for display of block heating
Keypad Chemically resistant membrane keypad made of
polyester with function and numeric keys
Mains 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)