Bruker EM27/SUN
Overview
The Bruker EM27/SUN is a Fourier Transform Infrared (FTIR) spectrometer measuring total columns of carbon dioxide (CO₂), methane (CH₄), and carbon monoxide (CO) using passive solar radiation. The unit uses a a custom built solar tracker, which modifies it’s position based on both expected solar position and area of high signal intensity, to focus incoming solar radiation onto the detector.
For autonomous field deployment, the EM27/SUN is placed in a custom built, waterproof enclosure, that includes Peltier cooling units that maintains humidity and temperature within the operational parameters of the instrument. The enclosure also includes a micro-controller that enables continuous, autonomous measurements, which are transmitted to the facility’s FTP server, alongside an uninterruptible power supply to ensure continued operation even during mains power failure.
The enclosure and instrument are portable and rugged, and allow for both swift deployment in challenging field sites, or for more long term deployment in dense urban areas.
Technical Specification
| Value | |
|---|---|
| Spectral Range | 7 µm – 9 µm |
| Spectral Resolution | 2.0 nm |
| Species measured | CO₂, CH₄, CO |
| Power Supply | 24 V DC |
| Power Consumption | At maximum draw during heating or cooling: 150 W; Average: 75 W |
| Weight | 45 kg (enclosure and instrument) |
Derivable Parameters
- Total columns of CO₂, CH₄, CO
Units Available for Loan
| Model and Serial Number | Documents and Software |
|---|---|
| EM27 SUN 126 | Manual |
| EM27 SUN 127 | Manual |
| EM27 SUN 128 | Manual |