Used see photos. Tested and appears to work - touchscreen works fine. Laser starts up, no issues. Front power button sometimes sticks when trying to turn it off, but still works. When a technician breathed near the gas inlet, the response was shown in the device.
Tested powers on see photos and video: youtube.com/watch?v=-9LetHHgCNM
The PAX has built in ethernet to allow for a direct interface with a computer as seen in the last two photos. We connected to it and used it remotely. For automatic graphing capabilities, the PAX Maintenance Console software "PMC" (which is not included) is required.
The PAX is a sensitive, high-resolution, fast-response instrument for measuring aerosol optical properties relevant for climate change and carbon particle sensing. Droplet Measurement Technologies (DMT) PAX Photoacoustic Extinctiometer (405 nm) for real-time aerosol optical properties: measures light absorption at 405 nm via photoacoustic detection and light scattering via the integrated nephelometer, enabling derived extinction, single scattering albedo, and black carbon/soot metrics (application and calibration dependent). Built-in touchscreen interface with continuous data logging on the internal controller. Typical hardware features include internal pump/flow system around ~1 L/min sample flow, critical-orifice flow splitting for the PA cell and scattering channel, and rear-panel analog I/O (BNC inputs/outputs) for external signals/automation. Configuration shown is the 405 nm version.
Power cable not included, but it is a standard computer power cable. Does not include laptop used for demonstration.
