Model
GT-321
GT-521S
GT-526S
AEROCET 531S
BT-610
BT-620
804
AEROCET
831
Product
Particle Counter
Particle Counter
Particle Counter
Particle Counter / Dust Monitor
Particle Counter - BenchTop
Particle Counter - BenchTop
Particle Counter
Aerosol Mass Monitor
Applications
-Airborne Contamination Monitoring & Testing
-HVAC Applications
-Process Control
-Filter Testing
-Cleanroom
-Controlled Environments
-IAQ
-Process Controls
-HVAC Applications
-Filter Testing
-Compliance Testing
-Emission Sourcing
-QA Programs
-Controlled Environments
-IAQ
-Process Controls
-HVAC Applications
-Filter Testing
-Compliance Testing
-Emission Sourcing
-QA Programs
-Controlled Environments
-IAQ
-Process Controls
-HVAC Applications
-Filter Testing
-Hospital & Clinics
-Emissions Sourcing
-Environmental Surveys
-Cleanroom Monitoring
-Medical Device Mfg/Pkg
-Filter Testing
-Hospital Surgery Suites / Pharmacy
-Food/Beverage
-Paint Booths
-Aerospace Assy
-Cosmetic Mfg'g/Pkg'g
-Cleanroom Monitoring
-Medical Device Mfg/Pkg
-Filter Testing
-Hospital Surgery Suites / Pharmacy
-Food/Beverage
-Aerospace Assy
-Cosmetic Mfg'g/Pkg'g
-Controlled Environments
-IAQ
-Process Control
-HVAC Applications
-Filter Testing
-Hospital & Clinics
-Laboratory Env.
-Industrial / Occupational Hygiene
-IAQ
-Process Control
-HVAC Appl.
-Filter Testing
-Point Source Monitoring
-Emissions Sourcing
-Environmental Surveys
Features
-Most inexpensive counter on the Market
-Simple Operation
-Fast Sampling
-Battery or AC Powered
-Keypad Selectable Sizes
-2
Channels of monitoring user Selectable
-Simple & Powerful Menu Driven functionality
-
Adjustable Sample Time
-Differential or Cumulative
-Battery or AC Powered
-All 6 Channels Count & Record at One Time
-Menu Driven Command Set for Out-of-Box Use
-Bench Unit Performance in a Handheld
-Affordable
-User Size Selectable
-2-in-1 Performance
-Particle Counting & Mass Monitoring Modes
-Cost Competitive
-Keypad Selectable Sizes
-Compact / Portable w/ built-in printer
-Volumetric Flow Control - improved accuracy
-Large Display - easily viewed from across room
-Improved Software
-2-year Warranty
-Compact / Portable w/ built-in printer
-Volumetric Flow Control - improved accuracy
-Large Display - easily viewed from across room
-Improved Software
-2-year Warranty
-Fast Sampling
-Simple Operation
-Selectable Sizes with available favorites (2) sizes displayed
-Low Cost w/ Data Logging
-Self Contained
-Four Mass Ranges (PM1, PM2.5, PM4, PM10)
-Handheld Operation
-Sample History
-Low Cost w/ Data Logging
-Battery Powered
Count Channels
1
(Selectable)
2
(Selectable)
6
(Selectable)
8
(FIXED)
6
(Selectable)
6
(Selectable)
4
(Selectable)
7
(FIXED)
Particle Sizes (µm)
0.3, 0.5, 0.7, 1.0, 2.0, 5.0 (Selectable)
0.3 - 10.0
0.3 - 10.0
Count: 0.3, 0.5, 1, 5 & 10 Mass: PM1/ PM2.5/PM4 /PM7/PM10/TSP
0.3 - 10.0
0.3 - 10.0
0.3, 0.5, 0.7, 1.0, 2.5, 5.0, 10.0
Mass = PM1/ PM2.5/PM4/PM10
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)
0.1 cfm (2.83 lpm)
0.1 cfm (2.83 lpm)
0.1 cfm (2.83 lpm)
0.1 cfm (2.83 lpm)
Concentration limit
3,000,000 / cf
3,000,000 / cf
3,000,000 / cf
Counter = 3,000,000 / cf Mass = 1mg/m3
3,000,000 / cf
6,000,000 / cf
3,000,000 / cf
3,000,000 / cf
Data Memory
None
8,000 records
8,000 records
6,257 records
8,000 records
8,000 records
2,500 records
2,500 records
Computer Interface
RS232
RS232 / RS485 / USB
RS232 / RS485 / USB
RS232 / RS485 / USB
RS232 / RS485 / Analog (0- 5V) / USB / Memory Stick
RS232 / RS485 / Analog (0- 5V) / USB / Memory Stick / Ethernet
USB
USB
Power Supply / Charger
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Cont. Operating Time
5
hours
10
hours
10
hours
10
hours
8
hours
4
hours
8
hours
8
hours
Recharge Time
15
hours
2.5 hours
3
hours
3
hours
3
hours
3
hours
2.5 hours
2.5 hours
Software
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Dimensions
6.25"(l) x 2"(h) x 3.5"(w)
6.25"(l) x 2.21" (h) x 4"(w)
6.25"(l) x 2.21" (h) x 4"(w)
6.25"(l) x 2.1"(h) x 4"(w)
8.75"x6.75"x8.5"
10.1"x8"x9.5"
6.73" x 3.75" x 2.0"
6.73" x 3.75" x 2.0"
Carrying Case
Included
Included
Included
Included
No
No
Optional
Optional
Accessories
No
RH
Temp/Flow Meter/ Printer/ Software / Wall/Tripod Mount
RH
Temp/Flow Meter/ Printer/ Software / Wall/Tripod Mount
RH
& Temp / Flow Meter / Printer / Wall/Tripod Mount
RH
& Temp / Serial Cable
RH
& Temp / Serial Cable
Case, Boot, Zero Kit, Flow Kit
Case, Boot, Zero Kit, Flow Kit