Smoking Machines
Smoking machines have been available for research and legislative requirements for many years. Traditionally these have used positive displacement techniques, where accurate control of the displacer allows precise measurement of flow rate. These machines (made by companies such as Borgwaldt) often allow the smoking of many cigarettes in parallel.
Although the positive displacement technique allows accurate measurement of the total flow through the cigarette, and thus accurate integration of total legislated emissions such as CO and particle mass, such systems are less suited to producing real-time concentration data during continuously varying flow conditions.
Since the pyrolysis in the tobacco rod varies throughout the puff (end of puff temperatures are significantly higher) there is interest in measuring the variations in emissions both intra and inter puff.
Cambustion SCS
To allow researchers to monitor real-time emissions while reproducing a continuously varying flow profile, Cambustion launched the SCS in 2007.
The SCS measures the flow through the cigarette in real-time, and uses a variable HEPA filtered dilution flow to follow the cigarette flow profile.
The SCS is used by tobacco researchers in Europe and North America, and SCS data frequently appears at conferences such as AAAR and CORESTA.
SCS Features
- Up to 25 Hz flow controller
- Accurate mass integration
- Analogue outputs for sample flow and dilution ratio allows accurate real time concentation measurements
- Heated sample head
When used with the DMS500 it allows real-time measurement of the particle size distribution during a pre-programmed puff profile. CVS operation ensures accurate mass and number integration during puffs.
When used with the NDIR500 it allows real-time measurement of the CO and CO2 concentration during a pre-programmed puff profile. CVS operation ensures accurate mass and number integration during puffs.
The SCS can also be used as a stand alone system for filter paper measurements.
For further information, please download the brochure or contact Cambustion.