Protect Detector Filaments by Flowing Gas
A carrier gas must be flowing through the detector whenever the detector filaments are turned on; otherwise, the filaments will deteriorate and lose sensitivity. If the gases are shut off, the filaments are automatically turned off after five minutes. |
The flowing gas also continuously cleans the plumbing of any water vapor which can enter when the sample tube is removed. Ten cm3/min is sufficient to perform this function.
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