A06 RQ-30 Specifications.docx

Salient Characteristics The USGS Hydrologic Instrumentation Facility at Stennis Space Center, MS needs to purchase one non-contact velocity and stage radar systems. This equipment is intended to be used for non-contact monitoring for water velocity and stage.

The equipment is needed for monitoring and recording monsoon conditions and is intended to be installed on bridges or other mounting arms without expensive structural measures in the rivers or channels, thus locating it outside of the danger area during flood events. Therefore, it is imperative that this equipment meet or exceed the requirements below.

RQ-30, NON-CONTACT RADAR LEVEL/VELOCITY/DISCHARGE SYSTEM

BRAND NAME OR EQUAL

SHALL:

1. Be capable of contact-free measurement of flow velocity using Doppler effect technology

2. Have the ability to be mounted on pipe

3. Operate within a power range of 6 to 30VDC

4. Perform within a velocity range of 0.10 to 15m/s

5. Measure stage ranging from 0-50 feet

6. Perform both stage and velocity measurements simultaneously

7. Calculate and report real-time discharge measurements

8. Recognize hysteresis effects

9. Measure in back water

10. Be able to endure harsh environments and be at least IP 67 compliant

11. Perform at a temperature range of -35° to +60°C

12. Provide integrated lightning protection

13. Have a minimum of one each interfaces for SDI-12, RS-485

14. Maintain an accuracy of ±0.01 m/s; ±1% FS

15. Be capable of single measurement durations of 5 to 240 seconds and intervals of 8 seconds to 5 hours

16. Have a velocity radar frequency of 24 GHz and a water level radar frequency of 26 GHz (K-band)

17. Have a distance to water surface range of 1.7 to 115 feet for velocity measurement and be capable of detecting flow direction in tidal influenced bodies of water

18. Be capable of automatic vertical angle compensation with an accuracy of ±1° and resolution ±0.1°

19. Include communication and operating software

20. Provide integrated lightning protection

21. Have a velocity radar opening angle of 12°, and a water level radar opening angle of 10°.

22. Include a bracket for 1.5 inch pipe mounting

23. Include a 10 meter communication cable

24. Provide an adjustable bandwidth for various water flows

25. Shall have a maximum standby power consumption of 1 mA when powered with 12 volts.

SPECIFICALLY MUST INCLUDE:

RQ-30 Discharge Measurement System with 10-meter cable and mounting bracket RS485 to USB Adapter and Cables