Attachment_1_Statement_of_Work_-_10_Oct_2018.pdf

STATEMENT OF WORK

TURBULENCE EDDY, WINDS AND ATMOSPHERIC GAS FLUX MEASUREMENT SUITE

10 OCTOBER 2018

GENERAL

The Air Force Institute of Technology requires an Expeditionary Atmospheric Testbed to effectively identify and quantify atmospheric effects on lasers and sensors. Capabilities include: (1) a water-based condensation particle counter and size spectrometer to measure aerosol concentration and size distribution; (2) a LIDAR to enable detailed, vertical profiling of aerosol layers and their optical properties; and (3) a Turbulence Eddy, Winds and Atmospheric Gas flux Measurement suite. This acquisition is for the Turbulence Eddy, Winds and Atmospheric Gas flux Measurement suite portion of the Testbed.

MINIMUM REQUIREMENTS

The complete Turbulence Eddy Winds and Atmospheric Gas Flux Measurement Suite, manufactured by Applied Technologies, Inc., is comprised of the following sub-components:

• QTY (4): SATI/3A Sonic Anemometer System (with mounting bar, calibration chamber, & output cable 10m length)

• QTY (2): Gas Analyzers - LI-7500DS, Analyzer for CO2 & H2O with air temp sensor & pressure sensor

• QTY (1): Specialized Controller and Data Processing - SCFMS-101 FluxPak System with DataPacker/DataLogger inputs, a Linux operating system, FMS software package, & weatherproof enclosure

• QTY (1): Calibration Equipment - LI-610, Dew Point Generator

• QTY (3): DPL-408 DataPackerLogger with eight digital inputs

• QTY (3): GS-3000, Wireless long-range Bridge kit

The following specifications list the minimum (threshold) requirements for the Turbulence Eddy Winds and Atmospheric Gas Flux Measurement Suite component of the Expeditionary Atmospheric Testbed.

1. A fully integrated, atmospheric gas flux analyzer (i.e. CO2 and H2O) and 4D horizontal/vertical winds/sonic temperature measurement capability (integrated turn-key capability, available off-the-shelf) to support eddy flux and covariance measurements and associated turbulence research

2. Measures open path CO2 and H2O gas densities to within 1% of reading

3. CO2 measurement sensitivity to H20, +/- 2.0e-5 mol CO2/mol H20

4. H2O measurement sensitivity to CO2, +/- 0.02 mol H20/mol CO2

5. Gas Analyzer’s air temperature thermistor measurement range: -20 to +70 degrees C

6. Gas Analyzer measured absolute temperature accuracy: +-0.3 degrees C for temperatures between -20 and 70 degrees C

7. Precision 4D wind measurement, simultaneous three directions (“u”, “v”, and “w” components) at high frequency (up to 200Hz)

8. Wind velocity measurement range and accuracy: +/- 65m/s; accuracy: +/- 0.001m/s, with flow distortion corrections to ensure minimal to no sonic anemometer structure (e.g. mounting bar) effects

9. Wind directional measurement range and accuracy: 0 – 359 degrees and +/-0.1 degrees, respectively

10. Sonic anemometers are capable of ingesting and processing continuous relative humidity updates to enhance sonic temperature accuracy

11. Sonic temperature accuracy: +/-0.10 degrees C (threshold); +/-0.050 degrees C (objective) achievable through continuous relative humidity updates to properly configured sonic anemometer, which in turn, is calibrated as outlined in the equipment user manual

12. Gas Analyzer station pressure measurement range: 50 – 110kPa

13. Gas Analyzer measured station pressure accuracy: 0.4 kPa for pressure conditions between 50 and 110kPa

14. Operating Temperature and Relative Humidity: Gas Analyzer, -25 to +50 degrees C; sonic anemometer, -50 to +70 degrees C; and 0 to 95% (threshold), 100% (objective), respectively

15. Deployable: weight is less than 25kg total sonic anemometer and gas analyzer sensor head and mounting tube / post

16. Data output: RS-232 and/or USB and/or Ethernet compatible, at 5 – 20Hz (gas analyzer) and

1 – 200Hz for sonic anemometer

17. Integrated control and data processing capability that ensures all sonic anemometer and gas analyzer sampling is synchronized and sampled data transmitted to an eddy co-variance flux processor. The processor, with included analytical software, is capable of producing processed fluxes such as latent and sensible heat, as well as momentum.

a) Sonic anemometers and gas analyzers shall be capable of linking with the DataPacker(s)/DataLogger(s) (DPLs).

b) Each DPL will collect the data—from the instruments and sensors tied to it—into a single packet and store a copy of it on a SD card.

c) Each DPL will also send a copy of the packet to the Testbed’s eddy co-variance flux processor by long range WiFi.

d) The eddy co-variance flux processor shall process the data, and store both the raw data and processed data on its equipment.

e) Real time access to sampled data at the eddy co-variance flux processor

18. Unattended operation

19. Gas analyzers and sonic anemometers can be calibrated in the field (i.e. does not require return to OEM)

PERIOD OF PERFORMANCE

The customer—the Air Force Institute of Technology (AFIT)—will receive all components 150 days after contract award.

DELIVERY AND TRAINING

The contractor will deliver hardware to the Air Force Institute of Technology (AFIT) at WPAFB, OH.

WARRANTY

Free from defects in material and workmanship, under normal and proper use in accordance with equipment user manual, for the period of time of one year after receipt.

PAYMENTS

100% payment after delivery.