The Aerocet 831 is a completely portable, full–featured, battery operated, handheld mass monitor. A mass monitor that simultaneously provides five important mass ranges (PM1, PM2.5, PM4, PM10 & TSP) in one minute from start up. Survey the environment with this easy to use, extremely portable, size selective mass monitor. This small lightweight instrument, 28 ounces, is the perfect tool for a wide range of assessment applications.

The Aerocet 531S is a full–featured, completely portable, battery operated, handheld mass monitor or particle counter. This unit provides particle counts or mass PM measurements as stored data logged values, real-time networked data, or printed results.

Met One Instruments BT-645 Portable Dust Monitor has been designed to continuously measure and record particulate information for indoor work place and public space environments. Our BT-645 optical sensor, matched electronics and backlit display, are enclosed in a rugged metal enclosure to protect the instrument during normal daily use.

Met One Instruments’ ES-642 Remote Dust Monitor is an industrial air-quality sensor designed to provide real time particle concentration measurements in both indoor and outdoor environments.

Our ES-642 measures particulate concentration using a highly sensitive forward scatter laser nephelometer, which has a measurement range of 0 to 100 mg/cubic meter (0 to 100,000 μg/cubic meter). As supplied, the ES-642 provides TSP particulate monitoring. Optional sharp-cut cyclones are available for PM₁, PM_2.5, or PM₁₀.

The ES-642’s serial and analog outputs support a wide variety of data collection systems. Serial outputs are MODBUS and basic ASCII via RS-232 or RS-485. Analog outputs include both 0-10 volts and 4-20 mA..