A06_Specifications.docx

Salient Characteristics S19100 The USGS Water Science Center in Sacramento, CA needs to purchase a Data Buoy. This is a complete monitoring buoy for long-term, real-time monitoring of water quality parameters.

DATA BUOY

SALIENT CHARACTERISTICS:

Data Buoy:

Data Buoy Solar Tower:

1. Shall be compatible with hull below.

2. Shall be a solar tower with three (3) 10-watt solar panels.

Data Buoy Hull:

3. Shall be compatible with tower listed above.

4. Shall have a buoy flotation constructed of a closed cell, cross-linked polyethylene foam hull with a polyurea skin and Kevlar reinforced top coat providing 450 lbs. of buoyancy.

5. Shall be yellow in color in accordance with international data buoy standards.

Battery Tie Down Bracket & Regulator Assembly:

6. Shall be integrated into the hull listed above.

7. Shall be compatible with A05 battery or equivalent.

Buoy-Mounted Data Logger:

8. Shall be integrated into the hull listed above.

9. Shall be capable of interfacing to industry standard sensor inputs including SDI-12, Modbus RTU, and NMEA0183.

10. Shall have embedded Wi-Fi connectivity for both direct and network interfacing at 250 ft.

11. Shall be capable of transmitting data via Verizon 4G LTE cellular telemetry.

12. Shall have a minimum of three (3) RS-232 ports and one (1) RS-485 port for serial sensor interface.

13. Shall be designed to quickly and easily connect to the sensors without the need to write programs or scripts.

14. Must be capable of parameter level polynomial equation adjustments.

15. Must be capable of parameter level basic and burst averaging with down to 1Hz rates.

16. Must have three (3) independent sensor switch power ports.

17. Shall have built in temperature sensor with -40 to 85°C, 0.002°C resolution, and ±2°C accuracy)

18. Shall have built in pressure sensor with 300 to 1100 mbar, 0.016 mbar resolution, and ±2 mbar accuracy.

19. Shall have built in humidity sensor with 0-100%, 0.04% resolution, and ±5% accuracy.

20. Shall have built in battery voltage sensor.

21. Shall be capable of updating its internal software to newer versions.

22. Shall be packaged in an IP65 enclosure not to exceed 13.5” diameter and 8.25” height.

23. Shall be capable of interfacing with NexSens’ WQData LIVE web data center or equivalent.

24. Shall be able to accept a 5-24V input power supply.

25. Shall be pre-assembled and connected with an RF signal connector, a UW-6 power/communication port, and UW-8 sensor ports.

Valve:

26. Shall be compatible with mounted data logger listed above.

27. Shall be an underwater pressure relief valve.

28. Shall be on data buoy lids

29. Shall be Tiodized titanium valve with dual main seals.

30. Shall relieve at 10 PSI differential as batteries outgas.

External Components:

Submersible Data Logger:

31. Shall be compatible with data buoy listed above.

32. Shall be made of a PVC body with Acetal battery lid.

33. Shall have 64MB internal flash, 256MB microSD card (expandable up to 32GB).

34. Shall have RS-485 direct to PC software, embedded web, WQData LIVE web datacenter or equivalent, magnet for Wi-Fi, and status LEDs.

35. Shall weigh no more than 12.0 lbs. without batteries and 16.6 lbs. with batteries.

36. Shall have parameter level polynomial equation adjustment; basic and burst averaging (min, max, standard deviation, and raw data available).

37. Shall be 5-24 VDC ±15%, reverse polarity protected.

38. Shall be no larger than 5.5” (13.97 cm) in diameter and 17.3” (43.94 cm) in length.

39. Shall have low power sleep mode at 200uA; active mode at 20mA; Wi-Fi transmitting mode at 43mA max; and cellular transmitting mode at 200 mA.

40. Shall have power supply able to sustain a 500mA 1-second peak current at 12V.

41. Shall have operating temperature from -20 to 70°C.

42. Shall be submersible to 200 ft., requires submersible antenna cap, specs below, with telemetry models.

43. Shall have Wi-Fi communications with 802.11b/g/n (direct to X2 or connect X2 to an existing network).

44. Shall have internal Wi-Fi antenna.

45. Shall be capable of cellular telemetry.

46. Shall have 250 ft. maximum Wi-Fi range.

47. Shall have N-style antenna port.

Submersible Antenna Cap:

48. Shall be compatible with submersible data logger listed above.

Underwater Cable Assembly:

49. Shall be compatible with submersible data logger listed above.

50. Shall be 6-pin to 8-pin plug cable assembly.

51. Shall be at least 60 m long.

Underwater Junction Box and Adapter:

52. Shall allow submersible data logger listed above to work with existing YSI EXO sonde.

53. Shall have MCIL-6-FS pigtail for sonde and underwater plug pigtail for data logger.

Female 8-pin Wetmateable Cable:

54. Shall be compatible with submersible data logger listed above.

55. Shall have locking sleeve.

56. Shall be at least 2m long.

Cable Assembly:

57. Shall be compatible with submersible data logger and existing sensor.

58. Shall have 8-pin connector is compatible with industry-standard digital and analog sensor outputs.

59. Shal have underwater plug with double O-ring seal offers a reliable waterproof connection to data logger, above.

60. Shall include system test and verification.