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SOF

The SOF (Solar Occultation Flux) instrument system is designed to measure gas emissions (flux) of VOCs and other gases using direct solar IR-light (SOF). The system consists of an IR-spectrometer and a 360° Solar Tracker mounted on an Optical Platform. The system also includes, control units, damping cushion, lifting pillar and mounting beams. IT-infrastructure including GPS-receiver, computer and monitor can also be provided on request.

Note: the SOF system requires a mobile platform (vehicle) with direct solar access for the Solar Tracker.

Note: Local wind measurements are needed for the flux calculations.

Specifications (Standard Configuration)
Unit (version) Main Unit (v7) incl Solar Tracker (v5)
Solar Tracker Control Unit and Remote Control (v2)
Measurement Principle Passive, Open Path
Measured Quantity (Unit) Slant Path Integrated Concentration (mg/m2)
Light Source Sun
Optical Path 360 deg Solar Tracking, 1.5" Clearance
Spectrometer Model Fourier Transform Infra-Red (FTIR)
Detector Type Dual (InSb/MCT), LN2-Cooled
Spectral Range Mid-IR: 750-3500 cm-1 (3-13 μm )
Spectral Resolution 0.5 (cm-1)
Standard Species &
Detection Limits (mg/m2)
Total Alkane mass (2)
Ethylene (1)
Propylene (2)
Ammonia (0.5)
Additional Species 1-3-Butadiene, 1-Butene, Methanol, Ethanol, Vinylchloride, Sulphur Hexaflouride
Sampling Time 2-5 s
Dimensions W x H x D 600 x 400 x 450 mm (Main Unit)
200 x 170 x 100 mm (Control Unit)
Weight 33 kg Main Unit
3 kg Control Unit
Housing Powder Coated Aluminium (RAL9003)
Operational Environment Temperature: 5-40°C
Relative Humidity: 0-90% (non-condensing)
Vibration Suppression Pneumatic Mounts
Supply Voltage 100-240V AC, 50/60 Hz, & 10-14V DC
Nominal Power 90 W
Data Interface Ethernet (RJ45)
Software FluxMeasureTM, FluxReportTM
Main Accessories Measurement Computer, GPS receiver, Alignment Kit, Lifting Pillar, Damping Cushion, Liquid Nitrogen Dewar, Vehilce Weather Station, Wind Station, Wind Mast, Spare Parts & Tool Kit,

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Contact

+46 (0)70 30 99 669
contact@fluxsense.se

Sweden – FluxSense AB – Head Office
+46 (0)76 30 80 535
Hulda Mellgrens gata 3,
SE-421 32, Västra Frölunda

US – FluxSense Inc
+1 (775) 830 52 72
15641 Product Ln A11,
Huntington Beach,
CA 92649

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FluxSense AB was founded in 2001 to fill a need for reliable diffuse emissions measurements for the petroleum and petrochemical industry. Since then, FluxSense has conducted well over 100 measurement campaigns of industrial and agricultural emissions in Europe, America and Asia.

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