The BT‐645 Portable Dust Monitor has been designed to continuously measure and record particulate information for indoor work place and public place environments.
A laser optical sensor is used to detect and measure particulate concentrations up to 100 milligrams per cubic meter. The continuous flow optical sensor is combined with purge air to ensure accurate measurements in adverse environments.
The optical sensor, matched electronics and backlit display, are enclosed in a rugged metal enclosure to protect the instrument from normal daily use.
The internal datalogger will store over 5,000 samples. Sample history events can be viewed on the display or downloaded to a computer using Comet software.
The internal battery pack provides over 10 hours of continuous operation. Battery recharge time is approximately 2.5 hours.
The standard unit is supplied with a TSP inlet. Optional sampling inlets are available for PM2.5, PM4 and PM10.
0 to 100 mg/m3 (0 to 100,000 µg/m3 )
5% traceable to standard with 0.6 µm PSL
1, 5, 10, 15, 30 and 60 minutes
Note: Measurement accuracy requires use of appropriate K‐factor for the material being measured.
Laser diode, 5 mW, 670 nm
14.8V Li‐ion (Lithium Ion) battery pack
Over 10 hours contnuous operation
Li‐ion battery charger, 100 – 240 VAC, 50/60Hz to 16.8 V @ 1.8 A