Teledyne Percent Oxygen Analyzer 用户手册

 

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All Teledyne oxygen probe or sensors are designed and 

manufactured to exacting standards of performance and reliability and are 
the result of extensive research and development. Teledyne Analytical 
Instruments provides worldwide application and after sales support for its 
oxygen probes, sensors and analyzers.  

 
The probe assembly provides a means of exposing the zirconia 

sensor to the atmosphere to be measured with sensor. It also provides for 
means of interfacing the sensor, thermocouple and heater wires with the 
control unit.  Reference air is fed via the top plug for unheated probes or 
by a separate gas thread connection for heated probes. Connections are 
provided on probes for an in-situ gas calibration check.  If required, an 
air purge can be admitted via the calibration gas check entry.  The outer 
sheath of probes is either metal or ceramic, depending on the 
application.  Calibration check can be achieved on 9060LEX sensors 
using a three way solenoid which blocks the sample and at the same 
time admits a calibration gas to the sensor.  As mentioned above, probe 
purging for removing any dust build up can be achieved in the same 
way.  

In-situ zirconia oxygen probes will give a lower oxygen reading 

than a sampled gas measurement on a chromatograph or paramagnetic 
analyzer because the flue gas contains a significant level of water vapor 
and a sampling system removes the water vapor through condensation.  
The oxygen content then appears as a higher percentage of the 
remaining gas.  For example:  If the gas contained five parts oxygen and 
fifteen parts moisture, removing the moisture would leave the oxygen at 
5.88%.  This phenomena will depend on the fuel and the completeness 
of combustion.  They are common to all zirconia oxygen sensors.