1 / 11

Precipitation Monitoring Technology - Tipping Bucket Rain Gauges

There are two main types of technology used for precipitation monitoring: tipping bucket rain gauges and all season weighing precipitation gauges. Learn more at - https://civi.ca/tipping-bucket-rain-gauges-and-all-season-weighing-precipitation-gauges/

civica
Download Presentation

Precipitation Monitoring Technology - Tipping Bucket Rain Gauges

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CopyrightCivica Infrastructure Inc., 2022 Precipitation Monitoring Technology - Tipping Bucket Rain Gauges 330 Rodinea Road, Unit 3 Vaughan, Ontario, Canada L6A 4P5 www.civi.ca (905) 417-9792 1

  2. Tipping Bucket Rain Gauge - Model TB3/TB4 • Operates on tipping bucket principle • 200mm receiver • 0.2mm bucket capacity • 0 to 700mm/hr. measuring range • +/-2% calibration accuracy for intensities from 25 to 500mm/hr. • -20oC to 70oC operating range 2

  3. TB3 Tipping Bucket Characteristics • Tips of bucket occur with each 0.2mm of precipitation collected • Reed switch detects events and produces a momentary contact closure 200mm receiver diameter collects rainfall 3

  4. TB3 Installation – Site Selection • Rainfall measurements are intended to be representative of the actual rain falling on a given area. • Factors to consider when installing include: • Placing the gauge on level ground • Have adequate protection from strong winds • Free of large obstructions such as buildings and trees • Suitable ground surface to avoid splashing into the gauge 4

  5. TB3 Installation – Electrical • A dual reed switch is on each rain gauge • Two isolated switches permit the control of two separate circuits; a local counter and a telemetry circuit 5

  6. TB3 Maintenance The only routine maintenance required is cleaning. Surface tension changes can occur if proper routine maintenance is not conducted. Isopropyl Alcohol is recommended for surface cleaning. • Catch Filter • Syphon • Interior of Bucket • Top surface of adjusting screws • Enclosure locking screws • All insect screens 6

  7. TB3 Calibration • TB3 rain gauge is calibrated at the factory prior to shipment • TB3 should hold its calibration for 100,000’s of events prior to a calibration being required • Prior to conducting a calibration check, a thorough cleaning of the rain gauge is required • most often a cleaning will bring the TB3 back into specified accuracy without having to do a calibration Specified accuracy is +/- 2% for 0 to 100mm/hr. 7

  8. TB3 Field Calibration Device 8

  9. TB3 Field Calibration Procedure • Fill the FCD and place the device on the raingauge • Open breather valve • Count tips manually or record bucket tips using a data logger, digital totalizer during discharge of water through the raingauge • After vessel is empty, check the number of tips accumulated per discharge • A total of 104 tips should be recorded +/- 2% after the 653mL of water drains from the FCD into the Raingauge (approximately 12 minutes for this procedure to run) 9

  10. Civica’s Collection System Management Services • Flow and Rainfall Monitoring CopyrightCivica Infrastructure Inc., 2021 • Sewer Modelling (InfoWorks, InfoSewer, SWM Engine, etc.) • Custom I&I Reduction Strategies • Sewer Testing (Smoke, Dye, MH inspections) • CCTV Mainline Inspections (Dry and Wet-Weather, Flushing) • Stakeholder Engagement & Remediation Management • Project/Program Management 10

  11. CopyrightCivica Infrastructure Inc., 2022 THANK YOU 330 RodineaRoad, Unit 3 Vaughan, Ontario, Canada L6A 4P5 www.civi.ca (905) 417-9792 11

More Related