Why choose ECOTECH? Choosing the right equipment to suit your application can sometimes be overwhelming with so many different options in the market. There are, however, differences to look out for, that can help guide you to make the right decision. The multi-species capability of the Spectronus aids holistic greenhouse gas studies which probe the whole picture. Simultaneous measurement of all gases in the same air sample allows correlations and relationships to be identified between the greenhouse gases in a way impossible with multiple analysers. Isotopes offer the best method to understanding sinks and sources of the measured greenhouse gases. CH 4 and N 2 O measurements are valuable in any comprehensive assessment of atmospheric effects on and by climate change. Thanks to an extended range of intuitive and userconfigurable automated methods, the Spectronus will allow you to investigate the mechanisms involved in the emission and loss of each gas, ultimately helping resolve the current uncertainties on their life cycles. Deep in the jungles or on board a ship sailing around the world, the Spectronus can be left unattended for extended periods of time. Housing the Spectronus within its own compact and mobile shelter ensures that it is readily deployable whenever required. Combined with a manifold to suit your application, the system is compact and complete. WHY PURCHASE A SPECTRONUS ? • One instrument for all greenhouse gases, CO and 13 CO 2 • Precise and accurate measurements meet GAW requirements • Low maintenance requirements • Customers have access directly to our application scientists and engineers when required • Spectra saved for re-analysis if required. Figure 1. Spectronus with metal cell.
CONSIDER COST SAVINGS! When measuring all greenhouse gases, the Spectronus is the most cost effective system on the market. It also requires very low maintenance. Ongoing costs are kept to a minimum. CAPABILITIES The ECOTECH Spectronus is an FTIR spectrometer coupled to a multi-pass (White) cell and a gas sampling manifold. It is principally intended for in situ sampling and analysis of air. The analyser is fully automated and provides real-time concentration or mole fraction measurements of target gases including N 2 O, CH 4 , CO, CO 2, including (δ 13 C and δ 18 O). SENSITIVITIES Typical residual of the non-linear fitting is shown in Figure 2. The excellent fit of the spectra allows the Spectronus to provide a precise measurement of the gas concentrations. In addition the Spectronus is very sensitive as shown for example for N 2 O in the Allan Deviation plot in Figure 3. If the sample airstream is undried, water vapour and its H 1 and 18 O isotopologues can also be analysed. Spectra are analysed to determine the amounts of selected trace gases in the cell by non-linear least squares fitting of broad regions (100–200 cm −1 ) of the spectrum selected for each target gas. The analysis is carried out automatically after spectrum collection, and the results logged and displayed on the controlling computer. Figure 2. Measured and fitted ambient spectra (lower panel) and residuals associated (upper panel). Griffith, D. W. T., Deutscher, N. M., Caldow, C. G. R., Kettlewell, G., Riggenbach, M., and Hammer, S.: A Fourier transform infrared trace gas analyser for atmospheric applications, Atmos. Meas. Tech., 5, 2481-2498, 10.5194/amtd-5-3717-2012, 2012. Figure 3. Spectronus sensitivity to N 2 O. Griffith, D. W. T., Deutscher, N. M., Caldow, C. G. R., Kettlewell, G., Riggenbach, M., and Hammer, S.: A Fourier transform infrared trace gas analyser for atmospheric applications, Atmos. Meas. Tech., 5, 2481-2498, 10.5194/amtd-5-3717-2012, 2012. ecotech.com | 3