A06_Specifications.docx

Salient Characteristics Special Order S21080

METEOROLOGICAL SENSORS, AND ACCESSORIES

SALIENT CHARACTERISTICS:

6 ea. – Transmitters

1. Shall consist of an industrial-grade, ruggedized, transmitter that accommodates up to at least 2 compatible probes for humidity, temperature, or moisture measurements.

2. Shall be capable of displaying measurement readings as well as transmitting them to automation systems via analog signals, relays, or Modbus TCP/IP protocol.

3. Shall include at least 4 analog channels that can be configured to mA or voltage type, and 2 configurable relays.

4. Shall be capable of making at least 2 measurements simultaneously.

5. Shall be capable of Modbus TCP/IP over Ethernet digital output protocols.

6. Shall include an Ethernet connection with web interface for remote access.

7. Shall include a touchscreen display.

8. Shall include a built-in Barometer for measuring absolute pressure over a range from 500 to 1100 mBar.

9. Barometer shall have a measurement accuracy of +/-0.10 mBar, or better.

10. Barometer shall provide measurement corrections for height and altitude.

11. Barometer shall include an NIST factory calibration certificate.

12. Shall have an IP-66 (or better) rated corrosion resistant enclosure.

13. Shall support powering options for either 12 VDC (nominal) or 24 VAC power.

14. Shall be capable of being mounted to a wall or vertical surface.

15. Shall operate over a range of temperatures from at least -20 to 55 degrees C.

16. Shall include all applicable hardware (i.e. mounting plate, etc.) and cable(s).

6 ea. Relative Humidity (RH) and Temperature Sensors

17. Shall be compatible with the transmitter described above.

18. Shall measure relative humidity with an accuracy of +/-1.5 % RH (0 to 80% RH), or better.

19. Shall have a relative humidity measurement range of 0 to 100%.

20. Shall measure temperature with an accuracy up to +/-0.2 degree C, or better.

21. Shall have an air temperature measurement range of at least -40 to 50 degrees C.

22. Shall include features to prevent condensation.

23. Shall be capable of RS-485 output and support Modbus RTC protocols.

24. Shall include a traceable calibration certificate with each unit.

25. Shall include a 2m cable.

26. Shall be provided with preset communication settings of 19200 Baud, 8, N, 2, and Modbus address of 240.

6 ea. Install Kit for Pole Mast

27. Shall be compatible with transmitter described above.

28. Shall be compatible with a pole mast with diameters ranging from 1 3/16” to 4.0”.

29. Shall include mounting plate and all necessary hardware (i.e. U-bolts, nuts, bolts, etc.) for attaching transmitter to a pole mast.

6 ea. Static Pressure Head

30. Shall be compatible with transmitter described above.

31. Shall consist of a mechanical device that minimizes wind induced error.

32. Shall be capable of “filtering out” the effects of dynamic pressure.

33. Shall be constructed of weather/corrosion-resistant, and UV protected, materials.

34. Shall include features to prevent insects and debris from effecting performance.

35. Shall operate over a range of temperatures from at least -20 to 55 degrees C.

6 ea. Radiation Shield with Mounting Kit

36. Shall be a device that protects humidity and temperature sensors from solar radiation and precipitation.

37. Shall be capable of being installed on a pole/mast as described herein.

38. Shall be naturally ventilated.

39. Shall include applicable adapter/fitting and pole/mast mounting hardware.

40. Shall be maintenance free.

6 ea. Wind Sensor

41. Shall be an ultrasonic type anemometer capable of measuring wind speed and direction.

42. Shall have a wind speed measurement rage of at least 0 to 75 m/s.

43. Shall have wind speed measurement accuracy of +/-0.1 m/s or 2% of reading, whichever is greater.

44. Shall have a wind speed resolution of 0.1 m/s.

45. Shall be capable of observing wind direction over a range of 0 to 360o with an accuracy of +/- 2o.

46. Shall have a wind direction resolution of 0.01o.

47. Shall provide data in SDI-12 format.

48. Shall operate from external 12 VDC (nominal) power.

49. Shall fully compensate from the effects of temperature, humidity, and altitude.

50. Shall be maintenance free with no moving parts.

6 ea. Wind Sensor Mounting Adapter

51. Shall be compatible with the wind sensor described above.

52. Shall be capable of mounting to a pole mast up to 70 mm (2.75 inch) in diameter.

53. Shall include all hardware for mounting (i.e. bracket(s), nuts, bolts, U-bolts, etc.)

6 ea. Bird Cage

54. Shall be a mechanical device, or similar apparatus, that prevents birds from disturbing wind speed and direction measurements.

55. Shall be capable of attaching to/over the sensor without dismounting the sensor.

56. Shall include all necessary mounting hardware.

6 ea. Wind Sensor Output Cable

57. Shall be compatible with wind sensor above.

58. Shall be at least 10m in length.

59. Shall have open leads on one end.

6 ea. Solar Radiation Sensor

60. Shall be capable of measuring incoming solar radiation over a range of 0-2000 W/m2.

61. Shall have a sensitivity range from 50 to 100 uV/W/m2.

62. Shall be capable of measuring solar energy with a field of view from 0-180o.

63. Shall include a built-in bubble level.

64. Shall be constructed of corrosion resistant materials and have an IP rating of IP67 or better.

65. Shall include a 5m cable (without M12 connector).

6 ea. Sensor Support Arm

66. Shall consist of a sensor support bracket (or tubing) and hardware that attaches to a pole mast.

67. Shall be compatible with radiation shield described above.

68. Shall be constructed of corrosion resistant materials.

6 ea. Weather Transmitter

69. Shall consist of an all-in-one unit that measures at least six parameters including:

wind speed and direction, liquid precipitation, barometric pressure, air temperature, and relative humidity.

70. Shall contain no moving parts.

71. Shall operate from 12 VDC (nominal) power source.

72. Shall have an SDI-12 digital output.

73. Shall include sensor heating capability.

74. Shall have an 8-pin M12 male connector with bushing and grounding accessories.

75. Shall have an Ingress Protection (IP) rating of at least IP65.

76. Shall include a 10m shielded cable with 8-pin M12 connector.

77. Shall include a mounting kit and bird kit.

78. Shall include factory test and calibration reports.