LI-820 Specifications

CO₂ Specifications

Measurement Range:  0-1000 ppm, 0-2000 ppm with 14 cm bench; 0-5000 ppm, 0-20000 ppm with 5 cm bench

Accuracy:  < 2.5% of reading with 14 cm bench; 4% of reading with 5 cm bench

Calibration Drift

          ¹Zero Drift:  < 0.15 ppm / °C

          ²Span Drift at 370 ppm:  < 0.03% / °C

          ³Total Drift at 370 ppm:  <0.4 ppm / °C

RMS Noise at 370 ppm with 1 sec Signal Filtering: < 1 ppm

¹ Zero drift is the change with temperature at 0 concentration
² Span drift is the change after re-zeroing following a temperature change
³ Total drift is the change with temperature without re-zeroing or re-spanning

Measurement Principle:  Non-Dispersive Infrared

Traceability:  Traceable gases to WMO standards from 0-3000 ppm.  Traceable gases to EPA protocol gases from 3000 to 20000 ppm

Pressure Compensation Range:  15 kPa-115 kPa

Maximum Gas Flow Rate:  1 liter/minute

DAC Resolution:  14-bits across user-specified range

Source Life:  18000 hours

Supply Operating Range:  12-30 VDC

Operating Temperature Range:  -20 to 45 °C

Relative Humidity Range:  0 to 95% RH, Non-Condensing

Dimensions:  8.75" x 6" x 3" (22.23 x 15.25 x 7.62 cm)

Weight:  2.2 lbs (1 kg)