Brechtel products

The SEMS is a scanning mobility spectrometer that allows rapid aerosol number size distribution measurements. Scan times of just a few seconds are possible. It also serves as a monodisperse particle generator to calibrate other particle instruments. The SEMS is an easy-to-use and field-ready tool. With an intuitive software interface, the SEMS is easy to configure with quick data post-processing capabilities. Plotting and analysis tools allow you to plot and analyze your data during acquisition. With the broadest size range commercially available, the SEMS can satisfy more scientific needs and adapt to changing research priorities.

Most particles in the atmosphere take up water when exposed to increasing relative humidity – this often explains the poor visibility during the early morning hours when the relative humidity is high and particles have swollen in size and more effectively scatter solar radiation. When we inhale particles they also grow into water droplets, how large they grow determines where they deposit in our respiratory systems. Brechtel developed the first commercial version of the Humidified Tandem Differential Mobility Analyzer (HTDMA) so researchers who wanted to explore the complexities of particle water uptake no longer had to build their own instruments, instead they could rely on our 20 plus years of experience with HTDMAs to invest in a solution that would let them focus on their science and not the tool.

The Model 9400 Base Module includes the software and hardware to communicate with, integrate and remotely control one or more 94XX modules, all at the same time. A ruggedized tablet PC with external serial control talks to and controls each module via a micro-USB hub. A simple-to-use graphical user interface automatically recognizes which modules are connected and activates the appropriate section of the software so you can monitor instrument health, data and remotely control the instrument via serial commands from an external computer. The software also makes it much easier to verify that all of your instruments are working properly before launching the mobile platform. The Base Module is an important add-on to your instrument suite to acquire aerosol samples from UAVs and other mobile platforms where remote control and monitoring capabilities are required. The compact size, low weight and minimal power use make it a great solution for applications requiring portability.