Indoor Air Quality Meter Selection Guide
Models
Fluke 971
Fluke 922
Fluke 985
Fluke CO-220
Record storage
99 No
99 No
10,000
Downloadable data
USB or Ethernet
No
Battery type
(4) AAA 2 years
(4) AA
Rechargeable Li-Ion 7 4 V 2600 mAh
(1) 9V 1 year
Warranty
2 years
1 year
Indoor air diagnostic applications Air velocity
• •
Air pressure
Air flow (volume)
•
Carbon dioxide Carbon monoxide
•
Temperature
•
•
Humidity
•
•
Dew point/wet bulb
•
Particle concentration counting
•
Air pressure/air velocity/air flow Air pressure range
± 4000 Pascals/± 16 in H 2 O/± 400 mm H 2 0/± 40 m bar/± 0 6 psi ± 1% + 1 Pascal/± 1% + 0 01 in H 2 O/± 1% + 0 1 mm H 2 O/± 1% + 0 01 m bar/± 1% + 0 0001 psi 250 to 16,000 fpm/1 to 80 m/s ± 2 5% of reading at 2000 fpm (10 00 m/s)
Air pressure accuracy
Air velocity range
Air velocity accuracy
Air flow (volume) range Air flow (volume) accuracy
0 to 99,999 cfm
Accuracy is a function of velocity and duct size
Temperature relative humidity Temperature range
-20°C to 60°C (-4°F to 140°F)
0°C to 50°C (32°F to 122°F) 0°C to 50°C (± 01°C) 32°F to 122°F (± 01°F)
Temperature accuracy
0°C to 45°C (± 0 5°C)/-20°C to 0°C and 45°C to 60°C (± 1 0°C) 32°F to 113°F (± 1 0°F)/-4°F to 32°F and 113°F to 140°F (± 2 0°F)
Relative humidity range Relative humidity accuracy
5% to 95% RH
0% to 90% RH
10% to 90% RH @ 23°C (73 4°F) (± 2 5% RH) < 10%, > 90% RH @ 23°C (73 4°F) (± 5 0% RH)
0% to 90% RH @ 23°C (73 4°F) (± 2 0% RH)
Carbon dioxide/carbon monoxide Carbon dioxide range
Carbon dioxide accuracy Carbon monoxide range Carbon monoxide accuracy
0 to 1000 ppm 5% or ± 2 PPM
Particle counting Flow rate Particle size range
2 83 L/min (0 1 cfm)
0 3 µm - 10 0 µm (6 channel) Raw counts, #/m 3 , #/ft 3 , #/liter in Cumulative or Differential mode
Cound modes
Counting efficiency
50%@ 03 μm; 100% for particles > 045 μm (per ISO 21501)
Concentration limits
10% at 4,000,000 particles per ft 3 (per ISO 21501)
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Environmental Testing
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