SASS(tm) 3000 Dry Air Sampler

The SASS® 3000 is an advanced high performance dry air sampler weighing less than 2.0 kg that integrates a new high efficiency collection media with electronic tagging technology and satellite communications. Key components are a disposable snap-on filter element and a computer-controlled miniature blower. The capture element is a 47 mm diameter micro-fibrous filter mounted in a circular holder. The fibrous media is up to 50X more efficient than a conventional glass or cellulosic material because each fiber incorporates a built-in electric field that captures particles using electrostatic dust precipitator principles—but at a microscopic level. This ‘electret’ media is stable to 70°C, is virtually inert, and has high holding capacity due to a large internal surface-to-volume ratio.

The filter holder incorporates an embedded read/write RF data chip that allows each filter to be individually date-stamped, and electronics internal to the unit communicates with the chip when the filter is mounted onto it or when an air sample is taken. The electronics also monitors GPS position, temperature and humidity, all of which can be recorded on the data chip. An optional add-on card allows the unit to be remotely controlled and interrogated via satellite.

SASS® 3000 System Specifications
Characteristic	Description
Operating Principle	Collection by novel, dry filter media.
Air Collection Rate	300 LPM nominal
Collection Efficiency	0.5 µm dia: 50% 1.0 µm dia: 75% 2.0 µm >dia: 90%
Operating Temperature Range	-40 to 70°C
Storage Temperature Range	-40 to 70°C
Decontamination	Water-tight design allows decon with 1 to 5% bleach solution.
Physical Size	Filter media: 4.7 cm diameter filter (active area 4.5 cm) mounted in 6.0 cm diameter injection-molded holder. Blower unit: 18 cm W x 19 cm L x 12 cm H
Weight	1.93 kg (4 lb 4 oz)
Power Source	Built-in rechargeable battery; 100–240 V AC/50–60 Hz lump-in-cord.
System Controls	On-board microprocessor and GPS.
Sample Chain-of-Custody	Each filter has an embedded digital read/write capability.
Communications	RS-232 (RF satellite link optional)
Sound Level	60 dB (A)
Package	Two-piece, impact-resistant, molded plastic shell w/carrying handle.

Research International reserves the right to change specifications on any of the devices mentioned without prior notification.