The GT‐521S is a full‐featured, battery operated, portable particle counter that provides the functionality of a bench unit with the convenience of a hand-held. This powerful device supports cumulative or differential counts, standard concentrations, total counts and count alarms.

KEY FEATURES:

Rugged Metal Construction
The aluminum enclosure provides protection from bumps and scrapes that can damage plastic instruments. A rugged carrying case is also provided.

User Selectable Particle Sizes
Two programmable count channels with 0.3 to 10 micron size ranges.

Data Storage
Store up to 8,000 sample events. Sample history can be viewed on the local display or download to a computer using Comet software.

Battery Powered
24 hours of typical (intermittent) operation or 6 hours of continuous operation from a single charge. Recharge time is approximately 2.5 hours.

Temperature / Relative Humidity Option
A plug-and-play option that immediately adds ambient temperature and relative humidity data.

Applications:
• Controlled Environments
• Indoor Air Quality
• Process Control
• HVAC Applications
• Filter Testing
• Compliance Testing
• Emission Sourcing
• Remote Sampling

SPECIFICATIONS:

Performance
Particle Size Range: 0.3µm ‐ 10µm, 2 channels

Calibrated Sizes User:  0.3 µm, 0.5µm, 1.0µm, 2.0µm 5.0µm and 10µm

Size Seƫngs:  0.1µm steps from 0.3µm ‐ 2.0µm, 0.5µm steps from 2.0µm ‐ 10µm

Concentration Range:  0 – 3,000,000 particles per cubic foot (105,900 particle/L)

Accuracy:  ± 10% to calibration aerosol

Flow Rate: 0.1 cfm (2.83 lpm)

Data Storage:  8,000 samples

Electrical
Light Source:  Laser Diode, 90mW, 780 nm

Battery: 7.4V 2,200 mAH Li‐ion battery pack. 6 hours continuous operation.

Battery Operation: Battery recharge time is 2.5 hours.

AC Adapter/Charger: Li‐ion battery charger, 100 – 240 VAC, 50/60Hz

Communications: USB, RS‐232 or RS‐485

Certifications Meets or exceeds CE, ISO 21501‐4

Interface
Display / Keyboard 16 character x 4 line LCD / 7 key membrane type

Physical
Height, Width, Depth:     6.25” (15.9 cm), 4.00” (10.2 cm), 2.12” (5.4 cm)

Weight:  2.00 lbs (0.91 kg)

Environmental
Operating Temperature:  0º C to +50º C º‐

Storage Temperature: -20 C to +60º C

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