TI286C/07/en/02.07
51506697
Technical Information
Oxymax W COS71
Potentiostatic amperometric three-electrode sensor
Long-term stable sensor for trace measurement
Application
Continuous measurement of the dissolved oxygen
concentration plays an important role in monitoring boiler feed
water:
• Trace quantities
Oxygen may only be present in trace quantities. Excessive
concentrations of oxygen can result incorrosion damage in the
circuit.
• Thermal resp. chemical degassing
Boiler feed water is thermally and chemically degassed to
achieve oxygen-free water. This state must be maintained in
service under process conditions.
• Laboratory measurement vs. continuous process monitoring
Spot laboratory measurements to measure oxygen involve a
risk of error due to sampling errors. Continuous measurement
directly in the process eliminates this risk and provides
reliable information about the state of the medium at any
time.
Your benefits
• Maximum measurement accuracy:
– Longterm-stable measurement thanks to potentiostatic
amperometric three-electrode system
– Long maintenance intervals
– Intelligent sensor self monitoring
• Calibration to any transmitter or location and subsequent
installation at measuring point (in digital mode with Liquisys
M COM 223/253) as calibration data is stored in the sensor
• Membrane covered sensor, i.e.:
– high O
2
selectivity
– Minimum maintenance effort
– Minimum calibration effort thanks to simple calibration in
air
