DMP Ltd. products

Absolute, non-dispersive infrared gas analyzer, Wide measurement range of 0 - 20`000 ppm CO2 and 0 - 60 ppt H2O, Less than 1 ppm @ 370 ppm for CO2 and less than 0.01 ppt at 10 ppt for H2O noise with 1 second signal averaging, On board sensors measure and correct for changes in cell temperature and pressure

Generates stable dew points from 0 - 50 °C, Accuracy of ± 0.2 °C dew point, Completely portable and self-contained (battery or AC operated), No need for gas tanks and mixing systems, Millivolt output of dew point temperature for data acquisition, External control via 0 - 5 V input signal

High speed, high precision, non-dispersive infrared gas analyzer for up to 20 Hz bandwith, Based on the proven LI-7500A (see below), Measurement range of 0 - 3`000 ppm CO2 and 0 - 60 ppt H2O, High precision of 0.16 ppm CO2 and 0.0067 ppt H2O typical RMS noise in ambient conditions @ 20 Hz, High speed in-cell temperature and pressure measurements, Continuous measurements through rain, snow, and fog

The LI-7500/LI-7500A is the most widely used open-path CO2/H2O analyzer in the world. Since its introduction in 1999 it has been directly cited in over 1500 peer-reviewed scientific publications, and scientists rely on the analyzer for its high precision, accuracy, and stability. Many instruments fielded in 1999 are still in continual field use today.  

The LI-7700 makes in-situ measurement of methane density with the resolution, speed, and stability required for the eddy covariance technique. Previously, measuring methane flux was difficult because of instrument limitations, including high power demands, heavy pumps, and the need for instrument enclosures. The LI-7700 overcomes all of these limitations. The LI-7700 is light weight, has low power requirements, and provides high frequency response. The LI-7700 is designed to measure methane density at frequencies that are necessary to quantify ecosystem methane flux.