GT-321
GT-521
GT-521
Aerocet 531
Aerocet 212
Model GT-321 GT-521 GT-526 AEROCET 531 AEROCET 212
Product Particle Counter Particle Counter Particle Counter Particle Counter / Dust Monitor Particle Profiler / Counter
Applications

- Airborne contamination monitoring & testing
- HVAC applications
- Process control
- Filter testing
- Cleanroom

- Airborne contamination monitoring & testing
- QA programs
- Ventillation testing
- Filter testing
- Cleanroom
- Process control

- Controlled environments
- Indoor air quality (IAQ)
- Process control
- HVAC applications
- Filter testing
- Compliance testing
- Emission sourcing
- QA programs

- Controlled environments
- IAQ
- Process control
- HVAC applications
- Filter testing
- Hospital & clinics
- Emissions sourcing
- Environmental surveys
- Mining & ore processing

- Air quality surveys
- Emissions sampling
- Workplace monitoring
- Ambient monitoring
- Environmental surveys

Features - Most inexpensive counter on the market
- Simple operation
- Fast sampling
- Battery or AC powered
- Keypad selectable sizes 		- Cost competitive
- Keypad selectable size range in 0.1µm increments
- Identification codes enable use in network applications employing up to 99 remote sensors 		- All 6 channels counted and recorded at one time
- Menu driven command aet for out of the box operation
- Bench unit performance in a handheld
- Cost competitve

- 2-in-1 performance
- Particle counting & mass monitoring modes
- Cost competitive
- Keypad selectable sizes

- Selectable size ranges factory set
- User program for field changes
- Particle mass monitoring
- Weatherproof
Count Channels 1 (Selectable) 2 (Selectable) 6 (Fixed) 2 (Fixed) 8
Particle Sizes (µm)
0.3 ,0.5, 0.7, 1.0, 2.0, 5.0
(SELECTABLE)
0.3 ,0.5, 0.7, 1.0, 2.0, 5.0
(SELECTABLE)
0.3, 0.5, 0.7, 1.0, 2.0, 5.0

Counter: 0.5 µm and 5 µm

Mass: PM1, PM2.5, PM7, PM10, TSP
Eight sizes within range of: 0.5 to 10 µm or 0.3 to 5 µm

Consult factory for special or extended ranges
Flow Rate 0.1 cfm (2.83 lpm) 0.1 cfm (2.83 lpm) 0.1 cfm (2.83 lpm) 0.1 cfm (2.83 lpm) 1.0 lpm
Concentration Limit 3,000,000 / cf 3,000,000 / cf 3,000,000 / cf Counter: 3,000,000 / cf
Mass: 1 mg/m3 		30,000,000 / cf
Data Memory None 4,000 records 8,000 records 4,000 records None
Computer Interface RS232 RS232 / RS485 RS232 / RS485 RS232 / RS485 RS232
Power Supply / Charger Yes Yes Yes Yes No
Continuous Battery Operating Time 5 hours 5 hours 11 hours 5 hours n/a
Recharge Time 15 hours 15 hours 15 hours 15 hours n/a
Software No Yes Yes Yes Yes
Dimensions 6.25"(l) x 2"(h) x 3.5"(w) 6.25"(l) x 2.1"(h) x 4"(w) 6.25"(l) x 2.21" (h) x 4"(w) 6.25"(l) x 2.1"(h) x 4 "(w) 4.5"(dia) x 6.5"(h)
Carrying Case Included Included Included Included No
Accessories No - RH & temperature
- Flow meter
- Printer		 - RH & temperature
- Flow meter
- Printer		 - RH & temperature
- Flow meter
- Printer		 n/a