Xylem WQL-Cond CONDUCTIVITY DATALOGGERS - Manual (Page 91)

WQL-Cond Technical data
187 ba75822e01 03/2011
14 Technical data
14.1 Measurement characteristics
General features
of the measuring
cell
Measuring principle Four-electrodes measurement
Range of application 1 µS/cm ... 1 S/cm
Cell constant 0.475 cm
-1
±1.5 %
Temperature sensor Integrated NTC 30 (30 k : at 25 °C / 77 °F)
Temperature responding
behavior t
99
(99 % of the final value display after)
< 20 s
Accuracy of the temperature
sensor ± 0.2 K
Measuring ranges,
resolution
(AutoRange
function:
the logger
automatically
selects the suitable
measuring range)
Measured parameter Measuring range Resolution
Conductivity [µS/cm] 0.0 ... 199.9
200 ... 1999 0.1
1
Conductivity [mS/cm] 2.00 ... 19.99
20.0 ... 199.9
200 ... 1000 0.01
0.1
1
Resistivity [Ohm*cm] 1.00 ... 19.99
20.0 ... 199.9
200 ... 1999 0.01
0.1
1
Resistivity [kOhm*cm] 2.00 ... 19.99
20.0 ... 199.9
200 ... 1999 0.01
0.1
1
Resistivity [MOhm*cm] 2.00 ... 19.99 0.01
Salinity 0.0 ... 70.0
according to the IOT
table 0.1
TDS 0 ... 199.9 mg/l
200 ... 1999 mg/l
2.00 ... 19.99 g/l
20.0 ... 199.9 g/l 1
0.01
0.1
Temperature [°C] − 5.0 ... + 60.0 0.1
Temperature [°F] + 23.0 ... + 140.0 0.1
Accuracy of the
measuring tech-
nique in the range
of application
Measured parameter Accuracy (± 1 digit)
Conductance ± 0.5 % of measured value
T [°C] ± 0.1