Xylem EXO Series - Conductivity;Temperature

pg | 13
2.9
Conductivity Cell
Conductivity/Temperature
Sensor Overview
e EXO combination conductivity and temperature sensor should be installed in a sonde in nearly all sonde
applications. Not only will this sensor provide the most accurate and fastest response temperature data, but
it will also provide the best data for the use in temperature compensation for the other EXO probes. e
conductivity data is used to calculate salinity, specic conductance, and total dissolved solids, and compensate
for changes in density of water (as a function of temperature and salinity) in depth calculations if a depth
sensor is installed.
Temperature Thermistor
e temperature sensor uses a highly stable and aged
thermistor with extremely low-dri characteristics. e
1.5
Specifications
Conductivity
Default Units
microSiemens/centimeter
Temperature
Operating
Storage
-5 to
+
50°C
-20 to
+
80°C
Range
0 to 200 mS/cm
Accuracy
0-100 mS/cm: ±0.5% of
reading or 0.001 mS/cm,
whichever is greater;
100-200 mS/cm: ±1% of
reading
Response
T63<2 sec
(see pg 12)
Resolution
0.0001 to 0.01 mS/cm
range-dependent
Sensor Type
4-electrode nickel cell
Temperature
Default Units
°Celsius
Temperature
Operating
Storage
-5 to
+
50°C
-20 to
+
80°C
Accuracy
-5 to 35°C: ±0.01°C
35 to 50°C: ±0.05°C
Response
T63<1 sec
Resolution
0.001°C
Sensor Type
Thermistor
(continued)
599870