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Manufacturer: Metone
Made in USA
Model: GT-521S
Particle Size Range: 0.3µm ‐ 10µm, 2 channels
Calibrated Sizes: 0.3 µm, 0.5µm, 1.0µm, 2.0µm 5.0µm and 10µm
User Size Setings: 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
Light Source: Laser Diode, 90mW, 780 nm
Battery: 7.4V 2,200 mAH Li‐ion battery pack.
Battery Operation: 10 hours continuous 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
Display / Keyboard: 16 character x 4 line LCD / 7 key membrane type
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)
Supplied :
Operation Manual
USB Cable
Comet Software
AC Adapter / Battery Charger
Iso‐kinetic Sample Probe
Carrying Case
Zero Particulate Filter




