TX9165 User Manual
TX9165-UM-EN-07 17
Checkpoint
All values listed are nominal and slight variations may occur depending upon
operating conditions.
• The natural level of oxygen available in the atmosphere is influenced by
relative humidity and temperature. The oxygen sensor will react to these
changes.
• Sudden changes in atmospheric pressure will also cause temporary
instability in electrochemical sensors which may exceed 60 seconds.
• Long periods of use in extremely high or low humidity may affect the
response of the sensor and shorten the life of electrochemical sensors.
• Nitric oxide sensors (TX6351.259) must be continuously powered to maintain
calibration stability. If power has been absent for more than 10 minutes, it
may take 24-48 hours for the sensor to restore stability. Do not calibrate
until the output signal is steady.
• The presence of high levels of carbon dioxide (over 5%) may have a minor
effect on the accuracy of the oxygen sensor.
Checkpoint
Periodic calibration of the gas sensor should be carried out whilst it is in service.
For oxygen and carbon monoxide gas sensors Trolex recommends that this
is carried out every 3 weeks. For other gas sensors Trolex recommends that
this is carried out in accordance with best practice for the industry where the
gas sensor is being used, and should take into consideration local operating
conditions.
www.trolex.com
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