Patent ID: 11965804
Assignee: MANUFACTURING RESOURCES INTERNATIONAL, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The system of claim 1 wherein:
the electronic display assembly comprises an illumination device, an open loop airflow pathway, one or more fans associated with the open loop airflow pathway and configured to ingest, circulate, and exhaust a flow of the ambient air through the open loop airflow pathway when operated, and a closed loop airflow pathway comprising the testing area, wherein said one or more fans are associated with the closed loop airflow pathway and are configured to circulate the gas through the closed loop airflow pathway when operated;
the controller is configured to turn off the illumination device, the one or more fans associated with the open loop airflow pathway and the one or more fans associated with the closed loop airflow pathway and take a differential pressure reading from the differential pressure sensor to determine a baseline differential pressure reading; and
the predetermined threshold comprises the baseline differential pressure reading with an added margin of error.