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Designed to provide accurate information on particle concentration

and operate continuously in adverse environments.

Special features such as the purge air system and automatic

zero calibration enable the monitor to operate 24/7.

A sheath air system isolates the aerosol in the chamber to keep

the optics clean for long term reliability and low maintenance.

LCD Display provided information on operation including:

power, heater power, flow operation,

status and particulate concentration.

Particulate Monitoring Solutions The ES-642 Remote Dust Monitor is an industrial

air-quality sensor designed to provide accurate measurements of particle concentration in

both indoor and outdoor environments. The unit is supplied in a rugged weatherproof enclosure.

It includes an LCD display to provide information about particulate concentration, flow rate,

instrument status and power. The electronics and optical system are protected from moisture

by a built in intake heater that is humidity level controlled. The heater power is regulated to

maintain a minimum humidity level. Additional features include a purge air system and an

automatic zero calibration routine.

The sensor can be wall mounted or installed on a vertical mast up to 3 inch in diameter.

The ES-642 is supplied with a 10 ft cable and connector for power (15 to 40 VDC) and signal output.

The ES-642 measures particulate concentration using a highly sensitive forward scatter laser

nephelometer, having a measurement range of 0 to 100 mg/cubic meter or 0 to 100,000 ug/

cubic meter. Optional sharp-cut cyclones are used to set the measurement level of the ES-

642. As supplied it provides particulate monitoring for TSP, with the addition of the sharp-cut

cyclone it can be set for particulate smaller than PM10 or smaller than PM2.5, or PM1. The accuracy

of the instrument is +/-5% based on a traceable PSL 0.6 micron reference standard.