A06_Specifications.docx

Salient Characteristics The USGS Hydrologic Instrumentation Facility, Stennis Space Center needs to purchase one (1) non-contact velocity measurement system PC. This equipment is intended to be used for making contact-free determination of the velocity of open rivers and channels. This equipment 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 meets or exceeds the requirements below.

SOMMER MESSTECHNIK RG-30 NON-CONTACT VELOCITY MEASUREMENT SYSTEM

SALIENT CHARACTERISTICS:

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

2. Shall have a powder coated aluminum housing, meeting IP 67 waterproof standard.

3. Shall include a minimum of two (2) mounting brackets and hardware, Ø35-48 mm (1.37-1.88 inches).

4. Shall be capable of operating on a power supply of 6V-30V.

5. Shall have integrated lightning protection.

6. Shall have an operating temperature range of -35° to 60°C (-31° to 140°F).

7. Shall have a minimum of one each interfaces for SDI-12 and RS-485.

8. Shall have a measuring range of 0.30 to 15 m/s.

9. Shall have an accuracy of ±0.01 m/s; ±1% FS.

10. Shall have a resolution of 1 mm/s.

11. Shall be capable of single measurement durations of 5 to 240 seconds and intervals of 8 seconds to 5 hours.

12. Shall have a radar opening angle of 12°.

13. Shall have a radar frequency of 24 GHz (K-band).

14. Shall have a distance to water surface range of 0.5 to 130 m and be capable of detecting flow direction.

15. Shall be capable of automatic vertical angle compensation with an accuracy of ±1° and resolution ±0.1°.

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

SPECIFICALLY MUST INCLUDE:

#17191, RG-30 Systems, for Non-contact Velocity Measurement RS485 to USB Adapter and Cables (BRAND NAME OR EQUAL)