1-4 | Thermox CG1000 Oxygen Analyzer
Proper Sensor Operations
Follow these general guidelines when using the CG1000 analyzer:
•
Do not use pipe dope on any joints of the sample tubing, or any other
contaminant that gives off combustible vapor which can cause errone-
ous measurements.
•
Do not use calibration gases if they contain a mixture of oxygen and
combustibles.
•
Always introduce calibration gases at the recommended flow rate.
Also, be sure that calibration and sample gases are introduced into the
analyzer at the same flow rate.
•
When working on the plumbing inside the analyzer, 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 thermocouple.
• 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 either of them.
• Calibrate the flow sensor using nitrogen as your carrier gas.
• Do not pressurize the external flow meter when calibrating the inter
-
nal flow sensor.
• Wait one hour between performing a thermal and regular calibration.
• Allow calibration gases to stabilize before proceeding to the next step
of a calibration.
• Do not overtighten compression fittings when servicing the analyzer.
