Attachment 1 Udpated Minimum Specifications Amendment 0002.pdf
PDF 97 KB Posted
- Attached to
- Spray Droplet Imaging and Sizing System Federal contract opportunity
- Solicitation number
- 12805B23Q0717
About this file
This document provides minimum specifications for a spray droplet sizing system to be purchased by the United States Department of Agriculture Agricultural Research Service Field Research Implementation and Information Delivery Plains Area under solicitation number 12805B23Q0717. The system must be capable of measuring droplet diameters from 10 to 5000 micrometers across various configurations, droplet directional vectors, absolute density and flux of spray, and droplet velocity ranging from 0 to 120 meters per second. Additional requirements include a field of view up to 10 by 10 millimeters, depth of field for 100-micrometer particles of 1 to 2 millimeters, ingress protection rating of at least IP54, and operational temperatures from 40 to 100 degrees Fahrenheit. The system software must integrate controls and data processing, allow for user-created algorithms, and report standard statistics on measurements.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Sol_12805B23Q0717_Amd_0002.pdf | ||
| Sol_12805B23Q0717_Amd_0001.pdf | ||
| Attachment 1 - Minimum Specifications.docx | DOCX document | |
| Solicitation 12805B23Q0717.pdf | ||
| Attachment 2 - Schedule of Pricing (MS Excel Interactive Document).xlsx | XLSX spreadsheet |
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Text version
Spray Droplet Sizing System
Minimum specifications required.
This system is being purchased to support the Unit’s aerial application spray nozzle atomization research efforts. As such, the following requirements represent the minimum level of performance to meet the established research needs:
- Capable of measurement of droplet diameters from 10 to 5000 um, may require change of lenses, probes, cameras, etc… to achieve full range, and full range may be made up of multiple sub-range configurations. At least one configuration should at minimum include the full range of 25 to 5000 um.
- Capable of measurement of droplet directional vector.
- Capable of measurement of absolute density and flux of spray.
- Software should ideally allow for correction of results due to larger droplets being more likely to be in focus (depending on depth of field).
- Sensor should be capable of acquiring images at a minimum rate of 25 fps.
- Capable of measurement of droplet velocity range 0 – 120 m/s.
- Minimum working distance (front of measurement probe to measurement plane and measurement plane to light source) of 15 in, or 30 inches from probe to light source.
- Capable of field of view (depending on magnification) of up to 10 x 10 mm2, with minimum depth of field for a 100-micrometer particle of 1-2 mm.
- Instrumentation and sensor shall provide for non-invasive measurement of spray cloud.
- Capable of detection of air inclusions or other foreign matter in droplet and non-spherical drops.
- System shall provide software that integrates all system controls, operation, and data processing.
- Software should allow for user created data processing algorithms and routines to be programmed and implemented.
- Minimum statistics reported shall include: 10, 50 and 90% volume diameters, full dynamic size distribution, number of particles captured, droplet velocity dimension vector, number, area and volume-based distributions, and deviations on all data.
- Shall provide for saving imaging data for presentation or post-analysis.
- Image acquisition systems should allow for use of established and verified calibrations at any preset magnifications and user applied calibrations.
- System should come with any tools or devices required to properly align probe and light source as needed.
- System should additionally provide for a high-speed camera system for real time imaging of spray structures and droplets with video framerates up to 10, 000 fps at a minimum resolution of 512 x 512 pixels with minimum of 16 GB of onboard memory.
- The test environments for intended use represent heavy spray, high wind speed environments such that system should be protected against dusty, wet, heavy sprays, and possibly splash conditions, meaning a minimum ingress protection rating IP54, and operational temperatures from 40 to 100 deg F.
- Due to safety issues and site restrictions, backlighting or flashlamp components should be LED or other non-laser-based devices and provide sufficiently short pulse durations to achieve the required range in velocity measurements.
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