1-4 | Thermox TM2000 Oxygen Analyzer
Common Operator Errors
There are some common errors to avoid. If they are avoided, your ana-
lyzer will operate with a minimum of maintenance and troubleshooting.
• Do not use pipe dope or any other contaminant that gives off com-
bustible vapor that can cause erroneous measurements on any joints
of the sample tubing.
• Do not use calibration gases if they contain a mixture of oxygen and
combustibles.
• Always introduce calibration gases at the recommended flow rate.
• When working on the plumbing inside the sensor cabinet, turn
the power off. The heater has exposed windings and a short to the
plumbing will blow the fuse and could damage the furnace or ther-
mocouple.
• Do not handle the cell excessively. Do not try to clean the cell except
by rinsing.
• Do not remove a cell or type “K” thermocouple that you may want to
use again when the inside of the furnace is still hot. Severe thermal
shock can be destructive to both of them.
• Always replace the viton O-ring when replacing the oxygen cell.
• Allow at least one hour after closing the sensor door for readings to
stabilize. Allow more time after a cold start-up.
• If calibrating in the PPM range, calibration gas should be in cylinders
made of aluminum, not carbon steel.
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