TSI Alnor CF920, CF910, CF930 Specifications
Features and Benefits
• Stable NDIR sensor to monitor CO
2
• Calculates % outside air from CO2or temperature
• Displays humidity as %RH, dew point, and wet bulb
• Manual or continuous data logging
• Stores 12,700+ sets of downloadable readings
with time and date stamp
• Includes LogDat2™software and interface cable to
download to a PC
Features and Benefits
• Statistics function for average, maximum, and minimum values
• Displays three parameters simultaneously
• Real-time CO2readings 0 to 5,000 parts per million (PPM)
• Integrated NDIR sensor
Applications
• Investigating indoor air quality
• Performing thermal comfort studies
• Checking ventilation systems
• Conducting IAQ evaluations
Model CF910 CO2Meter (not shown)
The CF910 CO2Meter is an excellent, cost-effective handheld
diagnostic instrument for measuring and monitoring carbon
dioxide levels. HVAC professionals use it for conducting IAQ
surveys, and evaluating ventilation systems in schools, offices,
factories, and hospitals.
Rugged. Reliable. Professional.
CompuFlow®IAQ Meters
Models CF920 and CF930
These Indoor Air Quality Meters are the ideal tools for investigating
indoor air quality and performing thermal comfort studies. They
simultaneously measure and data log multiple parameters. The
CF920 quickly and accurately measures carbon dioxide (CO2),
temperature, humidity, and calculates dew point, wet bulb temperature, and % outside air. The Model CF930 adds a measurement
of carbon monoxide (CO).
Indoor Air Quality Instruments
Model CF930
Specifications
CompuFlow Models CF910, CF920, and CF930
CO2
Sensor Type Dual-wavelength NDIR
(non-dispersive infrared)
Range 0 to 5000 ppm
Accuracy
1
±3.0% of reading or ±50 ppm,
whichever is greater
Resolution 1 ppm
Response Time 20 seconds
Temperature (Models CF920 and CF930)
Sensor Type Thermistor
Range 32 to 140°F (0 to 60°C)
Accuracy ±1.0°F (±0.6°C)
Resolution 0.1°F (0.1°C)
Response Time 30 seconds (90% of final value, air
velocity at 400 ft/min [2 m/s])
Relative Humidity (Models CF920 and CF930)
Sensor Type Thin-film capacitive
Range 5% to 95% RH
Accuracy
2
±3.0% RH
Resolution 0.1% RH
Response Time 20 seconds (for 63% of final value)
% Outside Air (Models CF920 and CF930)
Range 0 to 100%
Resolution 0.1%
CO (Model CF930 only)
Sensor Type Electro-chemical
Range 0 to 500 ppm
Accuracy ±3.0% of reading or ±3 ppm, whichever is greater
Resolution 0.1 ppm
Response Time <60 seconds to 90% step change
Operating Temperature
40 to 113°F (5 to 45°C)
Storage Temperature
-4 to 140°F (-20 to 60°C)
Logging Capability (Models CF920 and CF930)
Ranges Model CF920 logs up to 30,300 data points with
(3) measurement parameters enabled
Model CF930 logs up to 26,900 data points with
(4) measurement parameters enabled
Time Constant 1 sec, 5 sec, 10 sec, 20 sec, 30 sec (user selectable)
Log Intervals 1 second up to 1 hour (user selectable)
Meter Dimensions (all models)
3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)
Probe Dimensions (Model CF910)
Length 2.75 in. (7.0 cm)
Diameter 0.75 in. (1.9 cm)
Alnor Products, TSI Incorporated
- 500 Cardigan Road Shoreview, MN 55126-3996 USA
USA Tel: +1 800
424 7427
E-mail: customerservice@alnor.com
Contact your local Alnor Distributor or visit our website
wwwwww..aallnnoorr..ccoomm
for more detailed specifications.
P/N 2980560 Rev A Copyright © 2007 by TSI Incorporated Printed in U.S.A.
Models CF910, CF920 and CF930
1
At 77°F (25°C). Add uncertainty of ±0.2%/°F (±0.36%/°C) away from calibrated temperature.
2
At 77°F (25°C). Add uncertainty of ±0.03% RH/°F (±0.05% RH/°C) away from calibrated temperature.
Specifications subject to change without notice.
CompuFlow Air Quality Meters
Probe Dimensions (Models CF920 and CF930)
Length 7.0 in. (17.8 cm)
Diameter 0.75 in. (1.9 cm)
Weight (with batteries)
Models CF910
0.6 lbs (0.27 kg)
Models CF920 and CF930
1.16 lbs (0.53 kg)
Power Requirements
Model CF910 Four AA-size batteries
Models CF920 and CF930
Four AA-size batteries or AC adapter
CF910 CF920 CF930
CO
2
•••
CO
•
Temperature
••
Humidity
••
% outside air
••
Dew point
•
•
Wet bulb temperature
••
Data logging/downloading
••
Statistics
•••
Review data
••
Certificate of Calibration
•••
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