Compteur de particules
- Met One Instruments - GT-321
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Small Size - Big Performance
The handheld GT-321 is a portable particle counter that counts particles down to 0.3 microns—giving you portability and reliability at the lowest price in the industry.
Completely Self - Contained - Selectable Particle Sizes
Don’t let the size fool you - the GT-321 is completely self-contained with its own internal battery and sample pump, and is programmable, allowing you to choose your particle size of interest from fi ve sizes: 0.3, 0.5, 1.0, 2.0, or 5.0 microns.
Fast Sampling
Unlike other counters that can take up to a minute to deliver results, the GT-321 starts delivering volumetric concentration results in about 6 seconds! This facilitates quick multi-site sampling, tracing particle sources and site particle trending.
Simple Operation
Only two front-panel buttons control the size channels and sample cycle. The side-mounted power switch allows for convenient thumb operation.
Battery or AC Powered
The self-contained battery pack powers the unit for 8 hours of typical intermittent operation, and for up to 5 hours of continuous use. The included AC adapter operates the counter, even when the battery pack is discharged, and recharges the depleted battery overnight (16 hours) when turned off.
Applications:
- Controlled Environments
- Indoor Air Quality
- Process Control
- HVAC Applications
- Filter Testing
- Laboratory Environments
- Manufacturing Environments
- Emission Sourcing
Specifications
OPERATING PRINCIPLE | ||
Counts individual particles using scattered laser light | ||
PERFORMANCE | ||
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 particles/L) | |
Accuracy | ± 10%, to calibration aerosol | |
Sensitivity | 0.3 µm | |
Flow Rate | 0.1 cfm (2.83 lpm) | |
Sample Time | 1 minute total (fi rst reading in 9 seconds, subsequently every 6 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 certifications | |
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 to +50ºC | |
Storage Temperature | -20º to +60ºC | |
ACCESSORIES | ||
Supplied |
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METGT321 - 0 | Handheld Particle Counter |
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