Cleaning; Troubleshooting - Teledyne TEXIO PTE6-200 Operating Instructions Manual

Percent Oxygen Analyzer

5.6 Cleaning

If instrument is unmounted at time of cleaning, disconnect the
instrument from the power source. Close and latch the front-panel access
door. Clean outside surfaces with a soft cloth dampened slightly with
plain clean water. DO NOT use any harsh solvents such as paint thinner
or benzene.
For panel-mounted instruments, clean the front panel as prescribed
in the above paragraph. DO NOT wipe front panel while the instrument
is controlling your process.

5.7 Troubleshooting

Problem: Erratic readings of the Oxygen concentration as reported by
the analyzer.
Possible Cause:
The analyzer may have been calibrated in an inaccurate fashion.
Solution:
Turn the analyzer off, then back on again. At the startup screen press
Factory Reset. when prompted by the analyzer. See Sections 4.2 and
4.2.2. This will return the analyzer to its default settings in calibration
and zero values. If erratic behavior continues replace the sensor.
Possible Cause:
Atmospheric oxygen may be diffusing in through the vent and affecting
the oxygen level which the sensor sees.
Solution:
Increase flow rate and/or length or vent tubing in order to dilute or mini-
mize the diffusion of oxygen from the vent back to the sensor.
Problem: Inaccurate zero operation (i.e., the user has zeroed the
analyzer accidentally on gas much higher than one would normally use
for a zero gas).
Solution:
Turn the analyzer off, then back on again. At the startup screen press
Factory Reset. when prompted by the analyzer. See Sections 4.2 and
4.2.2. This will return the analyzer to its default settings in calibration
and zero values. Now proceed to carefully calibrate and zero the
analyzer.
Teledyne Analytical Instruments
Maintenance
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