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Measure Today. Ensure Tomorrow. Ultrasonic Water Meter – The Future for Residential Water Metering.

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Presentation on theme: "Measure Today. Ensure Tomorrow. Ultrasonic Water Meter – The Future for Residential Water Metering."— Presentation transcript:

1 Measure Today. Ensure Tomorrow. Ultrasonic Water Meter – The Future for Residential Water Metering

2 Agenda Mechanical Water Meters –Types –Performance Limitations –Effects of Wear Ultrasonic Water Meters –Benefits –Technology –Applications Questions and Answers

3 Mechanical Water Meters Include: Positive Displacement Technology –Oscillating Piston –Nutating Disc Velocity Technology –Multi Jet –Single Jet

4 Nutating Disc Water Meter Picture from Omega Flow and Level Handbook

5 Oscillating Piston Water Meter Picture from Omega Flow and Level Handbook

6 Single Jet Water Meter

7 Multi Jet Water Meter

8 Benefits of Mechanical Meters  Proven Technology  Widely Accepted and Trusted in the Industry  Technology has Evolved and Improved Over more than 100 Years  Several Types Can Be Rebuilt ‐ Extending their Useful Life

9 Disadvantages of Mechanical Meters  Moving parts – Wear and Tear  Regular re-calibration is required (5years)  Maintenance Is Required  Prone to Tamping, i.e., magnetic tampering on register  Particulates in Water Can Cause Problems  Calcium in Water Can Cause Problems  Significant Pressure Loss  Correct Sizing is Very Important

10  Inherent Low Flow Performance Limitations  Accuracy Relies on Close Tolerances that are Subject to Wear  Accuracy Degrading Over Time The following slides are for Low Flow analysis

11 ¾” Mechanical Meter Accuracy at Low Flow Source: Apparent Losses Caused By Meter Inaccuracies at Ultralow Flows, Richards et.al, AWWA Journal, June 2010

12 Implications for Water Conservation You Can’t Count What You Can’t Measure Even the Best AMI System Can’t Detect Leaks Below a Meter’s Lowest Flow Sensitivity A Leak of 0.05 GPM (1/20th GPM) amounts to 39 Teaspoons, or about 0.8 Cups per Minute This is Not Just a “Drip” Every Few Minutes

13 Slow Leak, Big Loss 0.05 GPM is 2,160 Gallons over 30 Days, or 25,920 Gallons per Year from ONE meter Across 10,000 Meters, this could amount to 259,200,000 Gallons per Year (795 Acre Feet) How Many Meters Have Leaks at or Below 0.05 GPM? WE DON’T REALLY KNOW BECAUSE THE MECHANICAL METERS CANNOT MEASURE THESE FLOWS – EVEN WHEN NEW!

14 What We Are Sure AWWA States That 16% of a Meter’s Usage Occurs at Low Flows (Less Than 1 GPM) Mechanical Meters Measure Only A Small Percentage of Flow Below 1/4 GPM – Even When New [Unmeasured Flow] Results in Significant Revenue Loss for the Utility Source: Apparent Losses Caused By Meter Inaccuracies at Ultralow Flows, Richards et.al, AWWA Journal, June 2010

15 Sources of Non‐Revenue Water AWWA Standard Water Balance

16 Apparent Losses From Meters Based on test studies of anonymous water utilities, typical average customer meter under registration is about 5 to 6 percent. Graph Source: Apparent Losses Caused By Meter Inaccuracies at Ultralow Flows, Richards et.al, AWWA Journal, June 2010

17 Apparent Losses From Meters Based on test studies of anonymous water utilities, typical average customer meter under registration is about 5 to 6 percent. Graph Source: Apparent Losses Caused By Meter Inaccuracies at Ultralow Flows, Richards et.al, AWWA Journal, June 2010

18 Agenda Mechanical Water Meters –Types –Performance Limitations –Effects of Wear Ultrasonic Water Meters –Benefits –Technology –Applications Questions and Answers

19 How Does Ultrasonic Water Meter Work This technology is similar to the following: - Based on Transit-time Technology The boat traveling against flow takes longer time to reach to its opposite bank than the one travels along the flow. Travel time difference is directly related to river flow velocity.

20 D Q ~ Tup-Tdn Each transducer sends a sound pulse towards the other. The pulse traveling downstream takes less time than the one travelling upstream. The travel time difference of the two pulses are proportional to the flowrate: To measure flow in a pipe, a pair of ultrasonic transducers are installed:

21 V > 0 With flow, red pulse travels faster than green pulse, thus, takes less time to complete the trip. The travel time difference is proportional to flowrare For Small Size Pipe: Reflector-Based Sensor for High Sensitivity

22 Patented Sensor design boosts system performance:  Convex reflector surface reduces risk of particle deposition.  Internal design absorbs multi-mode reflection.  Pure/strong signal is obtained.  Guarantees increased accuracy and stability.

23 ULTRASONIC COLD WATER METER  No moving parts to wear and tear.  Maintenance-free. No annual calibration required.  Tamper-proof design. ▲ Smart ▲ Digital ▲ NSF61-G approved ▲ Cutting-Edge Technology ▲ Designed for the Future Idea for submetering

24 ULTRASONIC COLD WATER METER  No moving parts to wear and tear.  Maintenance-free. No annual calibration required.  Tamper-proof design. ▲ Smart ▲ Digital ▲ NSF61-G approved ▲ Cutting-Edge Technology ▲ Designed for the Future Idea for residential metering

25 LEAKAGE DETECTION IN RESIDENTIAL PROPERTY Each domestic meter is able to detect small water leakage. When leakage is detected, water meter sends alarm to data center promptly. Spire’s Ultrasonic Water Meter is designed for this! Count each drop

26 MORE ADVANTAGES …  Wide dynamic range  Pipe burst detection and alarm  A lifetime of accuracy so the tenant pays for what they consumes. T  Low pressure drop. Saves pumping cost.  Smart interface ready for automatic meter reading (AMR/AMI)

27 Comparison – ¾” Meter Accuracy at Low Flow Graph Source: Apparent Losses Caused By Meter Inaccuracies at Ultralow Flows, Richards et.al, AWWA Journal, June 2010

28 Comparison – ¾” Meter Accuracy at Full Range

29 Comparison – ¾” Linearity

30 Comparison – Dynamic Range Mechanical (AMCO C700)Ultrasonic (Spire 280W-D) ¾” ” In fact, ultrasonic water meter has much larger dynamic range than shown in its spec.

31 Comparison – Longevity

32 LEAKAGE DETECTION

33 “Reduction of apparent losses caused by meter inaccuracies at low flows can result in substantial increases in revenue for a utility.” “Additionally, increased meter accuracy will allow for more equitable billing of customers.” Utah Water Research Laboratory Study Richards, Johnson and Barfuss; Utah Water Research Laboratory

34 Ultrasonic Technology Offers a Win ‐ Win for Utilities, Consumers, and the Environment.  They Can Reduce Apparent Losses From Meters, Allowing Utilities to Bill for More of the Water Actually Delivered  They Can Help Eliminate the Smallest Leaks  They Can Pay for Themselves in a Few Years  They Deliver More Information Than Ever Before  Environmentally Friendly Composition Conservation and Revenue

35 Ultrasonic Technology Offers a Win ‐ Win for Utilities, Consumers, and the Environment.  They Can Reduce Apparent Losses From Meters, Allowing Utilities to Bill for More of the Water Actually Delivered  They Can Help Eliminate the Smallest Leaks  They Can Pay for Themselves in a Few Years  They Deliver More Information Than Ever Before  Environmentally Friendly Composition Conservation and Revenue

36 Ultrasonic Water Meter Has Built-in AMR/AMI Feature. Easy for AMR/AMI Integration. AMR/AMI Ready

37  Mechanical Meters Are Still a Viable Solution – They Have Served Us Well for Over 100 Years  New Technologies Available Today Offer Compelling Financial and Ecological Benefits  They Compliment AMI System Deployments but Offer Many Benefits Independent of AMI  Utilities Should Explore and Understand the Potential of These Meter Technologies Conclusions

38 Agenda Mechanical Water Meters –Types –Performance Limitations –Effects of Wear Ultrasonic Water Meters –Benefits –Technology –Applications Questions and Answers

39 THANK YOU! … A Global Leader in Flow & Energy Management Solutions … Massachusetts, USA


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