Hydrogen Poisoning - Agilent Technologies 8355 Sulfur User Manual

Hydrogen Poisoning

SCD and NCD User Manual
Hydrogen poisoning of the SCD ceramic tubes can occur when
the relative oxidizer flow is very much lower than the hydrogen
flow. Whether this state occurs due to inappropriate method
setpoints or due to a problem with the oxidizer flow, this
condition results in extremely reduced or no response. If you
suspect hydrogen poisoning:
• Check for and resolve any flow shutdown.
• Check for restrictions in the oxidizer supply line to the
burner assembly.
• Load the checkout method or other method that uses more
balanced relative flow rates.
If the response does not recover, replace the inner ceramic tube.
If response still does not recover, replace the outer ceramic
tube. The ceramic tubes cannot be reconditioned.
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Troubleshooting
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