EGM-5 Operation Manual V. 1.04 73 support@ppsystems.com
Injection ā Zero (Step 4)
The next screen prompts the user whether to perform a zero or not. Since an autozero occurring during
an injection measurement would disrupt the process, normal timed zeros are disabled. It is
recommended that a zero be performed at the start of each measurement sequence. But it is not
required to perform one every single measurement.
Does a Zero then proceeds to Measuring screen (Step 5).
Proceeds to Measuring screen (Step 5).
Injection Step 5 ā Baseline Phase
This is the Baseline Phase. For the first 10 seconds, the EGM-5 will record the baseline reading, which is
the CO
2
concentration of the air before the sample is injected (typically 0 ppm). After 10 seconds the
Injection Phase begins. We recommend inserting the needle from your syringe into the septum at this
point in time to avoid contamination of the sample about to be injected into the EGM-5.
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