Operation 3-25
Purge Screen
Use the Purge feature to improve zero count test by removing any
residual particles in the flow path and depositing them on the exhaust
filter. TSI recommends that this feature be used when:
1. The instrument was exposed to high concentrations.
2. The instrument was not zeroed over long periods of time.
3. After a field calibration.
4. The instrument was moved around a lot.
Attach filters to the inlet and click the Start Purge button. The pump will
continue to run for 15 minutes and then stop. To stop the pump before
the 15 minutes have completed, click the Stop Purge button.
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