This IAQ (indoor air quality) meter simultaneously monitors carbon dioxide, relative humidity, and temperature. The R9900 is capable of automatically calculating wet bulb and dew point temperatures as well as statistical TWA and STEL averages.
Features
- Triple LCD display simultaneously monitors carbon dioxide (CO2), relative humidity and temperature
- Automatically calculates dew point and wet bulb
- Calculates statistical weighted averages of TWA (8 hour time weighted average) and STEL (15 minute short term exposure limit)
- User adjustable audible alarm
- Data hold, Max/Min and average functions
- Low battery indicator and auto shut off
Included Items
- Indoor Air Quality Meter
- Batteries
- Hard Carrying Case
Specifications
| Temperature | |
| Measuring Ranges | 14 to 140°F (-10 to 60°C) |
| Accuracy | ±0.9°F (±0.6°C) |
| Resolution | 0.1°F/°C |
| Humidity | |
| Measuring Range | 0 to 99.9% RH |
| Accuracy | ±3% (10 to 90% RH) ±5% (<10% & >90% RH) |
| Resolution | 0.1% RH |
| CO2 (Carbon Dioxide) | |
| Measuring Range | 0 to 5,000 ppm |
| Accuracy | < 999 ppm: ±40 ppm >1,000 ppm: ±5% Rdg |
| Resolution | 1 ppm |
| General Specifications | |
| Response Time | 1 sec |
| Display | Triple LCD display |
| Backlit Display | Yes |
| Dew Point / Wet Bulb Calculation | Yes |
| Data Hold | Yes |
| Min, Max and Avg Functions | Yes |
| CO2 Short Term Exposure Limit (STEL) | Yes (15 mins) |
| CO2 Time Weighted Average (TWA) | Yes (8 hours) |
| Alarm | Yes (audible) |
| Auto Shut-off | Yes (after 20 mins/off) |
| Low Battery Indicator | Yes |
| Power Supply | 4 AA Batteries |
| Battery Life | Approx. 24 hours (continuous use) |
| Product Certifications | CE |
| Operating Temperature | 14 to 122°F (-10 to 50°C) |
| Storage Temperature | 14 to 140°F (-10 to 60°C) |
| Operating Humidity Range | 10 to 85% |
| Dimensions | 7.9 x 2.7 x 2.3" (200 x 70 x 57 mm) |
| Weight | 6.7 oz (190g) |
Applications
Environmental Monitoring in:- Schools
- Office buildings
- Greenhouses
- Factories
- Hotels
- Hospitals
- Areas where high levels of carbon dioxide are generated
Documents
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