Metrohm 732 IC Detector - Manual (Page 196)

7.1 Technical data
732 IC Detector / 733 IC Separation Center
189
7 Appendix
7.1 Technical data
7.1.1 732 IC Detector
Conductivity measurement
Measurement ranges 100, 200, 500, 1000, 2000, 5000, 10 000 µ S/cm
Full scale 0.05 … 10 000 µ S/cm
Temperature correction Automatic correction of the measured conductiv-
ity to reference temperature 20°C with the
adjustable temperature coefficients
(1.5 %/°C or 2.5 %/°C)
Accuracy, absolute value < 4 % of full-scale value for all ranges under the
following reference conditions:
Adjustment with reference resistance to 1.000 V
(range 1 mS/cm, cell constant 16.7 /cm, temp.
coeff. 2.5 %/°C, frequency 5 kHz, room tempera-
ture) to accuracy < ± 2 mV, measurement
accuracy < 0.5 % after 30 min warm-up time
Linearity Up to ± 150 % of each full-scale range
Deviations < 0.5 % of full-scale range
Temperature dependence Typically 25 ppm/°C
Dependence of cell const.. < ± 1 % over entire adjustment range
Drift (electronic) < 0.0013 % of selected measurement range
/h/°C
Noise (electronic) Typically < 0.0003 % of selected meas. range
Damping 2-stage damping (Bessel 4 th order)
" damping = off " 0.25 s (10 … 90 %)
" damping = on " 2.00 s (10 … 90 %)
Auto-zero
Function Automatic zero setting (electronic background
compensation) over entire selectable measure-
ment range
Initiation Manually or externally (RS232, remote)
Maximum error ± 0.6 % of full-scale range
Linear range ± 150 % of full-scale range
Marker
Signal Ca. 10 % of full-scale range
Initiation Manual or externally (RS232, remote)