Extech CO2/ Humidity/ Temperature Datalogger
The Extech Humidity/ Temperature Datalogger simultaneously displays CO2, temperature, and relative humidity.
- Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or auto
- Maintenance free dual wavelength NDIR CO2 sensor
- Records data on an SD card in Excel ® format
|SD800||Carbon dioxide/ humidity/ temperature datalogger|
|Usually ships in 1-2 weeks|
The Extech CO2/Humidity/Temperature Datalogger features a maintenance free dual wavelength non-dispersive infrared CO2 sensor that checks for carbon dioxide concentrations. The triple LCD simultaneously displays CO2, temperature, and relative humidity. The datalogger date/time stamps and stores readings on an SD card for easy transfer to a PC. Selectable data sampling rate range from 5, 10, 30, 60, 120, 300, and 600 seconds or auto.
Applications include monitoring air quality in schools, office buildings, greenhouses, hospitals, or anywhere that high levels of carbon dioxide are generated.
- CO2 range: 0 to 4,000ppm
- CO2 accuracy: ±40ppm (<1000ppm); ±5% rdg (>1000ppm)
- CO2 resolution: 1ppm
- Temperature: 32 to 122°F (0 to 50°C)
- Temperature accuracy: ±1.8°F/0.8°C
- Temperature resolution: 0.1°F/°C
- Humidity range: 10 to 90%
- Humidity accuracy: ±4%RH
- Humidity resolution: 0.1%
- Datalogging: 20M data using 2G SD memory card
- Dimensions: 5.2 x 3.1 x 1.3" (132 x 80 x 32mm)
- Weight: 9.9oz(282g)
- (1) Datalogger
- (6) AAA batteries
- (1) 2G SD card
- (1) Universal AC adaptor
- (1) Mounting bracket
In The News
Determining exchange rates of carbon dioxide between the earth’s forests and the atmosphere is turbulent business.
Wind above forest canopies swirls as vortexes of air enter and exit stands of trees. Across the globe, towers stand among the landscape, with sensors monitoring these eddies for carbon dioxide, water vapor and other gasses. These so-called “flux towers” collect data on carbon dioxide exchange rates between the earth and atmosphere.
Information gathered plays into the debate on the measurable effects of climate change.
Carbon dioxide flows between the earth, atmosphere and ocean in an attempt to reach equilibrium. As automobiles and energy production facilities burn fossil fuels, more carbon dioxide joins to the mix.Read More
A few years after Ohio became a state in 1803, George Harner arrived in Greene County with a land deed signed by then-President Thomas Jefferson and Secretary of State James Madison. The homestead was largely old forest and wetlands and also included a fen-fed stream—the Beaver Creek.
As was the case with much of the Ohio Territory, the forests eventually gave way to land clearing and grain farming. Harner’s descendants, including his son John and John’s wife, Sarah Koogler, continued to work the rich soil for many years to follow.
Much of the original property and surrounding land has fallen prey to urban sprawl.Read More
Each fall in Puget Sound, coho salmon leave the salt water and swim up freshwater streams. They head upstream to spawn: lay their eggs and die.
Death is always the end of this journey for coho salmon, but in streams now running through urban areas, stormwater runoff kills them before they can spawn.
This phenomenon, called Urban Runoff Mortality Syndrome, can kill up to 70-90% of coho salmon in an affected area.
“‘Woah’ is a pretty common response,” said Kathy Peter, a research scientist formerly at University of Washington Tacoma and the Center for Urban Waters.
This phenomenon adds pressure to the Puget Sound population, already considered a species of concern by the United States Fish and Wildlife Service under the Endangered Species Act.Read More