Table 2 Specifications of the devices
Device | Parameter | Range | Resolution | Accuracy |
|---|---|---|---|---|
EXTECH O250: Portable IndoorAir Quality CO2 | Carbon Dioxide (CO2) | 0–5000 ppm | 1ppm | ±(%5rdg+ 50ppm) |
5000–9999 ppm | 1 ppm | Not specified | ||
Temperature | 14 to 140°F (−10–60°C) | 0.1°F/°C | ±0.6°C/0.9°F | |
Humidity | 0.0–99.9%, | 0.1%. | ±3%(10–90%) ±5%(< or > 10–90%) | |
Digital anemometer Model AM-4203 Lutron, ISO- 9001, CE, IEC1010 | Air velocity | 0.4–25.0 m/s | 0.1 m/s | ± (2 % + 1 d) |
1.4–90.0 km/h | 0.1 km/h | |||
0.9–55.9 mile/h | 0.1 mile/h | |||
0.8–48.6 knots | 0.1 knots | |||
80–4930 ft/min | 1 ft/min | ± (2 % + 20 ft/min.) | ||
Temperature | 0–50/32 to 122 | ± 0.1/0.1 | ± 0.8 /1.5 °C °F |