This presentation will explore the pros and cons of using a single photometer architecture for filter test equipment, and the impact the selected architecture has on equipment performance, reliability and total cost of ownership.
The photometer is a critical component to the operation of an automated filter tester and is used to determine the amount of aerosol that is penetrating the media during testing. The ratio of the aerosol that is challenging the media combined with the amount that is measured penetrating the media is determined to be the filter efficiency in percentile measurement.
There are two schools of thought when it comes to the number of photometers and the placement of the photometer(s) within an automated filter tester. One architecture is to incorporate two photometers; one on the upstream media under test and one on the downstream. Both photometers could be either in-line with the aerosol source or they could be partially sampling the aerosol. An alternative architecture would place a single photometer downstream of the measurement, in-line with the aerosol source. Test results have demonstrated...
Session: G14 - Measurement Techniques II
Day: 24 October 2019
Time: 10:45 - 12:00 h