Residential Metering Technologies. By: Ryan Fields TAUD Technical Conference Gatlinburg, TN March 2013

Transcription

1 Residential Metering Technologies By: Ryan Fields TAUD Technical Conference Gatlinburg, TN March

2 Today s Agenda: Why the need for Advancements? Mechanical Meter Technologies Multi-jet Positive Displacement Floating Ball Technology 1-1/2 2 Omni R2 Solid State Meter Technologies Fluid Oscillator Ultrasonic Electromagnetic 2

3 Why the Advancements? If mechanical measurement has served us for so long, why make a change? Water Loss = Revenue Loss New material regulations / January 2014 Lead Free Inherent low flow limitations with mechanical meters Increase importance on leak detection Increased need for system data Improvements in measurement technology 3

4 Multi-Jet 4

5 Multi-jet Water Uniformly Spread Across Multiple Inlet Ports Flows across an impeller Impeller velocity determines flow rate Register determines volume 5

6 Multi-Jet What is it? Velocity type meter where openings in the meter chamber direct the water flow across a multi-vaned rotor. The output speed of the rotor is proportional to the quantity of water passing through the measuring chamber. 6

7 Multi-Jet First designed and produced in Germany 1867 Primarily used overseas however they have been available to the US Water industry since early 1960 s Fall under AWWA C708 specification 7

8 Multi-Jet Brands Precision PMM discontinued March 31, 2012 Precision PMX - discontinued MasterMeter 8

9 Multi-jet Advantages Great at passing foreign matter Low flow sensitivity (¼ GPM on 5/8x3/4) accuracy range Relatively low head loss for mechanical meter (3.1 PSI at 10 GPM) Dry-top models registers could be accessed in-line (ex PMM) Available in a range of sizes (5/8 2 ) Economically priced Disadvantages Potential jetting (finger over a garden hose / strainer) Horizontal / plumb installation required for accuracy Wet-top models had to be pulled for maintenance (ex PMX) 9

10 Positive Displacement Two Types Nutating Disc Neptune Badger Hersey Oscillating Piston Sensus Elster No longer produced Mastermeter 10

11 Positive Displacement Nutating Disc 11

12 Positive Displacement / Nutating Disc What is it? Nutating disc meters have a round disc that is located inside a cylindrical chamber. The disc is mounted on a spindle. The disc nutates, or wobbles, as it passes a known volume of liquid through the cylindrical chamber. 12

13 Positive Displacement Nutating Disc 13

14 Positive Displacement Nutating Disc Characteristics Originated in the mid 1800 s Volumetric-type meter Ball and Socket measuring element 14

15 Positive Displacement Nutating Disc Advantages More accurate at low flows than multi-jet Low friction loss (8.0 psi at 20 gpm) ¼ - 20 GPM Flow Range (5/8x3/4) Proven technology Disadvantages Less likely to effectively pass foreign material (as compared to Multijet) Can stop up with sand, grit, or other elements easily Single wear point on the ball 15

16 Positive Displacement - Nutating Disc 16

17 Positive Displacement - Nutating Disc 17

18 Positive Displacement- Oscillating Piston 18

19 Positive Displacement- Oscillating Piston 19

20 Positive Displacement - Oscillating Piston 20

21 Positive Displacement Oscillating Piston Characteristics Volumetric-type meter C700 Floating piston ¼ - 20 GPM Flow Range (5/8x3/4) 21

22 Positive Displacement Oscillating Piston Advantages More accurate at low flows than Multi-jet Dual port design floats piston Low friction loss (7.0 psi at 20 gpm / SRII) ¼ - 20 GPM Flow Range (5/8x3/4) Large surface area to reduce wear Proven technology Disadvantages Less likely to effectively pass foreign material (as compared to Multijet) Can stop up with sand, grit, or other elements easily 22

23 Oscillating Piston Sensus SR Sensus SRII Sensus Accustream MasterMeter MMPD Elster/Amco C700 No longer producing mechanical meters 23

24 Sensus R2 Omni Floating Ball Technology 24

25 Floating Ball Technology R2 replaces the 1-1/2 and 2 SR PD meter as well as the 1-1/2 and 2 PMM Gives better low flow sensitivity and higher top end flow Less cost than using Omni Compound C2 or Omni T2 25

26 Floating Ball Technology Characteristics of 2 R2 Omni Operating temperature range of 33 F (.56 C) 150 F (65.6 C). Operating Range 100% ± 1.5% from GPM ( m3/hr) Low Flow 95% 1.0 GPM (.23 m3/hr) Pressure Loss GPM ( m3/hr) Maximum Operating Pressure PSI (13.8 bar) Flange Connections 2 U.S. ANSI B16.1 / AWWA Class 125 Register: Fully electronic sealed register with programmable registration (Gal. /Cu.Ft./ Cu. Mtr. / Imp.Gal / Acre Ft.) Programmable AMR/AMI reading Guaranteed 10 year battery life 26

27 Floating Ball Technology Floating Ball Technology Extended flow range Improved accuracy One measuring element 27

28 Electronic Register Three modes AMR Output comes standard Programmable features LCD odometer 10 year battery life 31 Days Pulse AMR / AMI More data for better decision making Registration Units AMR Output Resolution Pulse Output Resolution Register Display 28

29 Floating Ball Register - AMR 29

30 Floating Ball Register - Total 30

31 Floating Ball Register - Test 31

32 Floating Ball Test Port 32

33 Versatility Standard laying lengths Application flexibility Interchangeable measuring chambers Built in strainer and test plug Drop-in chamber Ease of maintenance 33

34 Benefits Installation versatility Extended flow ranges Excellent return on investment Information Driven Utilities 34

35 Solid State Meter Technology 35

36 Solid State Meter Technology 3 Different Types of Technology Fluidic Oscillator Residential Ultrasonic Residential Magnetic 36

37 Solid State Meter Technology Fluidic Oscillator Elster SM700 CONFIDENTIAL

38 Solid State Meter Technology How does a Fluidic Oscillator Water Meter Work? A special design of water flow chamber creates a fluctuating pressure sequence that causes the water flow to oscillate. The frequency of the oscillations is directly proportional to the velocity (speed) of the water. Sensors in the flow chamber count the oscillations. CONFIDENTIAL 38

39 Solid State Fluidic Oscillator Advantages NSF61 Certified Battery life greater than 15 years Low head loss (11 psi at 15 gpm) Increased flow range of gpm Disadvantages Relatively new meter Metallic electrodes can corrode Prone to recording electrical current at highest flow rate resulting in overregistration Not offered in a 1 39

40 Solid State Meter Technology Fluidic Oscillator Technology from Elster Metering SM700 CONFIDENTIAL 40

41 Solid State - Ultrasonic Residential Ultrasonic Technology from Badger Meter E Series 41

42 Solid State - Ultrasonic Ultrasonic flow meters measure the difference of the transit time of pulses between two transducers. Ultrasonic signals sent in forward and reverse directions of flow Velocity of water determined by difference in two signals 42

43 Solid State Ultrasonic Advantages NSF61 Certified / Annex G 9 digit LCD Display Flow range of gpm Low head loss (2.3 psi at 15 gpm) 20 year battery 175 psi Disadvantages Relatively new meter Ultrasonic reflectors extend thru flow tube and are open to build-up Recommended installation is 5 (up) and 2 (down) for dampening effect Because ultrasonic signals are sent every second to monitor flow, pulsation caused by pumps or regulators could create measurement errors Accuracy can be affected by temperature, density, and viscosity of fluid being measured 43

44 Solid State - Ultrasonic Typical Ultrasonic Meter Diagram 44

45 Badger E-Series Side View 45

46 Electromagnetic 46 46

47 Electro-Magnetic - Iperl 47

48 Electro-Magnetic - Iperl Mag Meter: Faraday s law States that the velocity of the fluid is directly proportional to an induced voltage as the fluid flows through a constant magnetic field. As the flow increases, so does the voltage, and in turn a greater volume of water is measured. Patented features to achieve superior low flow accuracy with high flow capability 48 48

49 Electro-Magnetic Iperl Advantages No moving parts 20 year accuracy Lowest head loss (2.0 psi at 15 gpm) Greatest Flow Range ( gpm on 5/8x3/4) 200 PSI (highest rated on the market) Temperature 33 F 160 F Burst Pressure 1650 psi (twice the psi as SRII PD meter) 20 year warranty on the battery Tamperproof Disadvantages Cost 49

50 Electro-Magnetic Iperl Remanent Field Technology: What and Why? Definition: The magnetization left behind in a material after the external magnetic field is removed Remanent Operation Permits Continuous Measurement Without Applying Power Continuously Major advantages Helps solve power demands of traditional mag technology Contributes to better low flow accuracy 20 year battery life 50

51 Electro-Magnetic - Iperl Flow Tube Glass Infused Crystalline Resin Rectangular cross section promotes best physics for measurement accuracy Does not promote scale formation Minimizes swirling and turbulence as water enters flow tube Increases water velocity which helps in detecting ultra low flows Can withstand high pressure (200 psi) Maintains dimensional stability in extreme temperatures (-30 F 160 F) 51 51

52 Solid State - Iperl 52

53 Features 9 digit field programmable display Sealed, glass encapsulated electronic register Built-in strainer Magnetic Flow Sensors Sealed Electronic Register Flowtube Strainer 53 53

54 Intelligent Alarms Alarms to monitor the application as well as the health of the iperl Available for reporting: Can detect Reverse flow Tamper Empty pipe Leak Lifetime alarms 6 month Condition monitoring alarms High temperature Low field High current Glide slope ADC failure Touchread failure EMF range 1 month Battery failure 54 54

55 High Temperature Exposure to environmental temperature outside its design range (- 30 F to160 F) for more than 15 minutes Low Field Issue with the magnetics High Current Magnetic drive coil consumes too much power Glide Slope Issue with the battery achieving full life of 20 years TouchRead Failure Failure of the touchcouple EMF Range Condition Monitoring Alarms Electrodes have been badly damaged 55 55

56 Alarm History and Datalog All alarm conditions may be logged Records time of event Records complete state of device when event occurred Datalog Interval (configurable) data can be stored Peak flow in interval Volume in interval Capacity for ~5000 data points 49 days at 15 minute intervals 12 years at 24 hour intervals 56 56

57 Head Loss Curve Typical PD Meter iperl CONFIDENTIAL 57

58 Electro-Magnetic - Iperl Sensus Video AAAAu-frDtE~,LkcoCtFGV5jS4A5r9w- AocR7zhpCG_4Z&bclid=0&bctid=

59 Electronic Registers CONFIDENTIAL 59

60 Registers CONFIDENTIAL 60

61 Electronic Register Available on SRII and accustream meters All orders for encoded accustreams beginning February 2013 Option on SRII» ICE-Opto registers will no longer be available after February 2014 Not tested with multi-read devices Features 9 digit display (9 th digit is leak indicator) Rate of flow AMR/AMI capability (Register ID and AMR digits) Plastic bonnet with removable register (tamper-resistant set-screw) Register bonnet is rotatable up to shorter than ICE-Opto register Warranty 20 year (10 full / 10 pro-rated) CONFIDENTIAL

62 Conclusion 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 CONFIDENTIAL 62

63 Residential Metering Technologies Questions? 63

64 For more information, please refer to the AWWA M6 Manual or Contact Ryan Fields, CI Thornburg (865) (252) Thank you! 64