CS511 Dissolved Oxygen Sensor
4
6.
Select the measurement and its associated output options.
7.
Click
Finish
and save the program. Send the program to the datalogger if
the datalogger is connected to the computer.
8.
If the sensor is connected to the datalogger, check the output of the sensor
in the data display in
LoggerNet
,
PC400
,
RTDAQ
, or
PC200W
to make
sure it is making reasonable measurements.
5. Overview
The CS511 is a galvanic sensor, which produces a millivolt signal proportional
to the amount of oxygen present in the measured medium. Oxygen diffuses
through the membrane onto the cathode, reacts chemically, and combines with
the anode. An electrical current is produced by this chemical reaction which is
converted from microamps to millivolts by an in-line resistor. An in-line
thermistor also conditions the signal providing automatic temperature
compensation. With these features, the sensor produces a linear, millivolt
output proportional to the oxygen present in the medium in which it is placed.
The sensor consists of two parts, an upper part with cathode, anode, and cable,
and a lower part comprising of a screw-on membrane cap. The CS511 is
shipped dry, but has a membrane installed in the cap. With the membrane in
place, the cap must be filled with electrolyte solution before the cap is screwed
onto the top component.
The CS511 is self-polarizing and requires no external power source.
