Abstract
We present a low cost Particle Number (PN) diluter including mass flow monitoring. The
device consists of a commercial hypodermic needle, a High Efficiency Particulate Air (HEPA) filter.
and a custom‐made flow sensor. The flow sensor is used to monitor the diluter’s performance and
enable in‐time replacement of the low cost elements used. Neither the sampling flow rate nor the
pressure drop drastically change the dilution factor introduced by the presented device. This makes
the presented device especially useful for particle number measurements at positions close to the
tailpipe of internal combustion engine powered vehicles, where aggravating, fast pressure
pulsations complicate correct sampling.
device consists of a commercial hypodermic needle, a High Efficiency Particulate Air (HEPA) filter.
and a custom‐made flow sensor. The flow sensor is used to monitor the diluter’s performance and
enable in‐time replacement of the low cost elements used. Neither the sampling flow rate nor the
pressure drop drastically change the dilution factor introduced by the presented device. This makes
the presented device especially useful for particle number measurements at positions close to the
tailpipe of internal combustion engine powered vehicles, where aggravating, fast pressure
pulsations complicate correct sampling.
| Original language | English |
|---|---|
| Title of host publication | An Intrinsically Pressure Insensitive Low Cost Particle Number Diluter Featuring Flow Monitoring |
| Number of pages | 6 |
| Publication status | Published - 10 Dec 2018 |
| Event | Eurosensors 2018 - Karl Franzens Universität Graz, Graz, Austria Duration: 9 Sept 2018 → 12 Sept 2018 https://www.eurosensors2018.eu |
Conference
| Conference | Eurosensors 2018 |
|---|---|
| Country/Territory | Austria |
| City | Graz |
| Period | 9/09/18 → 12/09/18 |
| Internet address |