Description
Overview
GAOTek digital humidity meter is a multi-gas detector that can measure the indoor air quality index, including CO2 and CO concentrations, dew point, wet bulb value, and air temperature. This device can be used as a CO 2 data logger for monitoring air quality in workspaces, offices, hospitals, schools, stations, or homes. It is an ideal instrument for indoor air quality (IAQ) diagnosis.Â
Features
- Professional portable air quality meter with alarm functionÂ
- Large LCD with blue backlightÂ
- One-touch multi-measurementÂ
- NDIR waveguide technology CO 2 sensorÂ
- Data storage and calibrationÂ
Technical Specifications
CO2 measurement range | 0 ppm to 9999 ppm (5001 ppm to 9999 ppm out of scale range)Â |
CO2 resolution | 1 ppm |
CO2 accuracy | ±30 ppm ±5 % of reading (0 ppm to 5000 ppm), other range are not specified |
CO2 response time | <30 seconds (90 % step change)Â |
CO2 warm-up time | 30 seconds |
CO measurement range | 0 ppm to 1000 ppm |
CO resolution | 1 ppm |
CO accuracy | ±10 ppm for less than 100 ppm, ±10 % of reading for 101 ppm to 500 ppm, ±20 % of reading for 501 ppm and above |
CO response time | <60 seconds (90 % step change)Â |
Air temperature measurement range | -4 °F to 140 °F (-20 °C to 60 °C) |
Air temperature resolution | 0.1 °F, 0.1 °C |
Air temperature accuracy | ± 0.9 °F, ± 0.6 °C  |
Air temperature response time | <2 mins (90% step change)Â |
Relative humidity measurement range | 0 % to 99.9 % RHÂ |
Relative humidity resolution | 0.1 % RHÂ |
Relative humidity accuracy | ±3 % RH at 77 °F (25 °C) (10 % to 90 % RH), ±5 % RH remaining range |
Relative humidity response time | <10 min (90 % step change)Â |
Dew point temperature (DP) | -4 °F to 139.82 °F (-20 °C to 59.9 °C) |
Wet bulb temperature (WB) | 23 °F to 139.82 °F (-5 °C to 59.9 °C) |
CO2 sensor operating temperature | -4 °F to 122 °F (-20 °C to 50 °C) |
CO sensor operating temperature | 32 °F to 122 °F (0 °C to 50 °C) |
Other parameters of operating temperature | -4 °F to 140 °F (-20 °C to 60 °C) |
Storage temperature | -4 °F to 140 °F (-20 °C to 60 °C) |
Storage RH % | 10 % to 90 % RH (avoid condensation)Â |
Power supply | 4 x AA or 9 V adaptor |
Battery life | > 24 hours (alkaline battery)Â |
LCD size (L x W) | 1.73 in x 1.02 in (44 mm x 26 mm)Â |
Meter size (L x W x H) | 8.07 in x 2.76 in x 2.20 in (205 mm x 70 mm x 56 mm)Â |
Weight | 7.05 oz (200 g)Â |