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6.1 Technical data
792 Basic IC
159
6 Appendix
6.1 Technical
data
6.1.1 Conductivity
measurement
Measurement range
0
}
1000
P
S/cm (resolution: 0.56 nS/cm)
Maximum error
r
10
P
S/cm and
r
1 % of measurement value (k = 16.7/cm)
Linearity
Deviations <
r
5
P
S/cm
Noise
typ. 3 nS/cm
Drift (electronic)
typ. < 10 nS/cm / h
Temperature dependence
typ. < 40 nS/cm / °C
Reserve range
> 33 % (k = 16.7/cm)
Sampling rate
10 measurements/s (fixed)
6.1.2 Conductivity
detector
Construction
Thermostatted conductivity detector with
2 ring-shaped steel electrodes
Measurement principle
Alternating current measurement with 1 kHz
frequency and ca. 1.7 V amplitude (peak to
peak).
Cell volume
1.5
P
L
Cell constant
approx. 17 /cm (the exact value is printed on the
detector)
Maximum back pressure
for measuring cell
5.0 MPa (50 bar)
Thermostatting
Connectable dynamic control to operating
temperature
Operating temperature
40 °C
Max. temperature deviation
r
2.5°C
Heating time
t
30 min
Temperature stability
d
0.01°C at constant ambient temperature
Connection for detector block
Dsub 15 pin (female)
Содержание 2.792.0020 Basic IC
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Страница 197: ...6 Appendix 792 Basic IC 188...