PMX compatibility
The PMX sensor head is only available with the Ranger. It is not compatible with the S200, S300, or S500 monitors.
Application
PMX is suitable for a wide range of applications, including industrial hygiene assessments, environmental perimeter monitoring, indoor air quality monitoring, and others. PMX without an enclosure isn’t designed for long-term outdoor use and care must be taken to avoid damage via exposure to adverse weather conditions.
Operation
PMX uses a laser particle counter to count and size airborne particles. The air is sampled at a set flow rate via a omni-directional TSP inlet. It converts particles size and counts to PM1, PM2.5, PMresp (respirable fraction), PM10, and TSP measurements. Particle mass calculations are humidity corrected based on the Kohler theory of humidity growth of particles.
Particle size range
The PMX sensor responds to particles in the size range 0.2um to about 40um. However, this will be dependent on the optical properties of the specific particles being measured as a consequence of Mie scattering theory.
Calibration
The PMX mass channels are calibrated against a EN 16450 certified reference instrument with ISO 12103 test dust. PMX calibration is traceable to NIST standards.
PMX sensors are calibrated in the Aeroqual calibration laboratory and immediately packed and stored in dust-free packaging. They are shipped within 3 months of the factory calibration date stated on the calibration certificate.
PMX sensor heads that have been stored in their supplied packaging are unlikely to degrade for many years. Their calibration will continue to be valid when stored for many months in the original Aeroqual packaging.
Please note, a valid calibration certificate doesn’t guarantee the performance of any device. Regular zero and span checks as part of a quality assurance plan are always recommended to provide confidence that a sensor is performing as expected
Operating life
The PMX sensor head has an operating life of many years. Please contact Aeroqual Sales to obtain information on calibration options.
Care and Safety
Caution should be taken when using the PMX sensor head to measure high levels of potentially flammable dust, such as coal dust. Using the PMX to measure high levels of such dust can result in accumulation in the sensor head, increasing the risk of fire.
If you are using the PMX sensor head to measure such dust, the sensor head should be regularly cleaned to prevent dust accumulation. Please follow the PMX Cleaning Guide.