The Extech SD800 meter measures, displays, and stores CO2, temperature and relative humidity readings. Data is stored on a SD card for transfer to a PC. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service
Extech SD800 CO2, Humidity and Temperature Datalogger Features:
- Checks for Carbon Dioxide (CO2) concentrations
- Maintenance free dual wavelength NDIR (non-dispersive infrared) CO2 sensor
- Triple LCD simultaneously displays CO2 , Temperature and Relative Humidity
- Measurement ranges: CO2 – 0 to 4,000ppm; Temperature – 32 to 122°F (0 to 50°C); Humidity – 10 to 90%RH
- Datalogger stores readings on an SD card in Excel® format for easy transfer to a PC
- Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or Auto
- Complete with six AAA batteries, 2G SD memory card, universal AC adaptor, and mounting bracket
Display : 60 x 50 mm (2.4 x 2.0”) LCD
Measurement sensors :
Temperature: Internal sensor
Relative Humidity: Precision capacitance type
CO2: NDIR
CO2 Response Time : <2 min to 63% of final reading typical
Memory Card SD memory card, 1 GB to 16 GB.
Datalogger Sampling Time 5/10/30/60/120/300/600 seconds or Auto.
Temperature Compensation Automatic
Display update rate Approx. 1 second
Data Output RS 232
Operating Temperature 0 to 50°C (32 to 122°F) Operating Humidity Less than 90% RH
Power Supply 9V AC adaptor.
Six (6) AAA (UM4) 1.5 V batteries for clock backup
Weight Meter: 240 g. Probe: 158g
Dimension Meter: 132 x 80 x 32mm
Probe: 132 x 38 x 32mm
Extech SD800 Specifications:
| Range | Resolution | Accuracy (of reading) | |
| Temperature | 0.0 to 50.0 °C | 0.1°C | ± 0.8°C |
| 32.0 to 122.0°F | 0.1°F | ± 1.5°F | |
| Relative Humidity | 10 to 70% |
0.1% |
± 4% RH |
| 70 to 90% | ± (4% of reading + 1% RH) | ||
| CO2 | ≤1000ppm |
1ppm |
± 40ppm |
| >1000 to ≤3000ppm: | ± 5% of reading | ||
| >3000ppm | ±250ppm typical |
