Maxace Handheld Particle Counter-004
Maxace Handheld Particle Counter-004 is a portable particle counter that counts particles down to 0.3 microns using scattered laser light. 
GT-321 Handheld Particle Counter gives you portability and reliability at the lowest price in the industry.
| Specifications of GT-321 Particle Counter | |
| Measurement Method: | Scattered laser light | 
| Particle Size Range: | >0.3, >0.5, >1.0, >2.0, and >5.0 μm (selectable) | 
| Concentration Range: | 0 – 3,000,000 particles per cubic foot (105,900 particle/L) | 
| Accuracy: | ± 10% to calibration aerosol | 
| Sensitivity: | 0.3 μm | 
| Flow Rate: | 0.1 cfm (2.83 lpm) | 
| Sample Time: | 1 minute total (first reading in 9 seconds, subsequently every 6 seconds) | 
| Hold Time: | Adjustable: 1 to 999 seconds | 
| Electrical | |
| Light Source | Laser diode, 30 mW, 780 nm | 
| Power | 6V Ni-MH self-contained battery pack—provides 8 hours of typical intermittent operation, up to 5 hours continuous use  | 
| AC Adapter/Charger | AC to DC module, 100 – 240 VAC to 9 VDC @ 350 mA typical | 
| Communications | RS-232 | 
| Certifications | Meets or exceeds CE, ISO, ASTM, and JIS international certifi cations | 
| Interface | |
| Display | 16-character LCD | 
| Keyboard | 2-button membrane | 
| Physical | |
| Size | Height = 6.25” (15.9 cm) Width = 3.65” (9.3 cm) | 
| Thickness | 2.0” (5.1 cm) | 
| Weight | 1.74 lb - 28 oz (0.79 kg) | 
| Environmental | |
| Operating Temperature | 0º C to +50º C | 
| Storage Temperature | -20º C to +60º C |