Rich Dewar Product Line Manager Itron DATTUS III

Rich Dewar Product Line Manager Itron

DATTUS III 1900’s 1930’s 1950’s 2000’s THE DATTUS III METER / 2 2

DRIVERS BENEFITS » Helps meet critical gas delivery requirements » Robust design » Inventory flexibility & savings » Streamlining of meter set design » Lower Maintenance » High rangeability » Easier meter upgrades » More information from the meter » Can address a range of otherwise difficult metering applications. » Built-in configuration flexibility THE DATTUS III METER / 3 3

WHAT IS THE DATTUS METER? DESCRIPTION » Solid-state gas meter » Fluidic oscillation technology » Designed for distribution measurement » Fits the standard footprints » Designed for future value THE DATTUS III METER / 4 4

How Does it work? Operating Principle § The operation of the Dattus meter is based on the fluidic oscillation principle. This static metering technology is based on Bernoulli’s theory—a slow moving high pressure gas becomes a fast moving low pressure gas. § Described in 3 elements > Flow Tranquilizer > Jet Formation Nozzle > Oscillation Chamber 5

Flow Tranquilizer § Conditions the Inlet Flow § Removes effects of inlet piping configurations § Produces a known profile for the nozzle § Accelerates the flow to eliminate any dissymmetry in the initial separation 6

Jet Formation Nozzle § Forms a distinct jet gas flow profile § Enhances separation in boundary layers to reduce frictional effects § Leveraged the ‘Coanda’ effect that the fluidic meter is based on 7

Oscillation Chamber Obstacle § An obstacle in the chamber is used to control the fluid feedback paths. § As the jet is ‘bent’ to one side of the cavity a pressure node is formed. This creates a difference in pressure either side of the jet and hence a force is exerted on the jet. 8

Oscillation Chamber (cont. ) Obstacle § The force causes the jet to bend to the other side of the cavity where the same effect will be seen. § This oscillation only depends on the volume of gas passing through the nozzle. One oscillation cycle will represent a characteristic volume of gas. 9

Detecting the Oscillations – Making it a meter R 1 V R 2 Sensor Resistance R = R 1 - R 2 The key to deriving the volume is to ‘count’ the number of fluidic oscillations. The example above uses a thermal sensor and produces a sinusoidal ‘pulse’ to electrically monitor the oscillation. 10

THE DATTUS III METER / 11 11

SOLID-STATE MEASUREMENT ATTRIBUTE The DATTUS III meter has no moving parts. BENEFITS » Will not “lock-up”. » With no impellers, can handle fast on/off applications even in short meter runs. » Ensures continuous gas flow even under failure conditions » Eliminates need for parallel meter runs where design goal is continuity of gas service, hospitals for example THE DATTUS III METER / 12 12

SET DESIGN ADVANTAGES ATTRIBUTE Solid-State measurement and the associated packaging BENEFITS » Can reduce number of set designs • Offers 2” flange up to 11 M • Offers 4” flange up to 56 M » Eliminate parallel runs designed for safety or for seasonal loads » No upstream piping requirements » Smaller set design for larger capacity meters THE DATTUS III METER – CHANGING C&I METERING/ 13 13

LOWER IN-SERVICE COSTS ATTRIBUTE Design implications on periodic maintenance and verification requirements BENEFITS » Easier to install • Aligned flanges not critical • Level installation not necessary » » Requires no oil May be differential pressure tested Only regular maintenance item is battery change No damage from “overspin” THE DATTUS III METER / 14 14

FEATURE SET DIFFERENTIATION ATTRIBUTE Electronics lends itself to incorporation of certain feature sets and the ability to record information Features » Built-in temperature compensation » Four pulse output channels » Datalogging » Programmable fixed pressure compensation » Event logging » Alarm indications THE DATTUS III METER / 15 15

DATTUS III SIZE/CAPACITIES Model 8 C 1 M f. M 1 x x 1. 5 M x f. M 2 3 M 5 M 7 M 11 M 16 M 23 M 38 M 56 M x x x x f. M 3 Model 2 M Start Flow (CFH) Flow rate for +/- 2% acc. Flow rate for +/- 1 % acc. Maximum Capacity (CFH) f. M 1 8 10 35 3750 f. M 2 18 22 60 13750 f. M 3 45 60 100 57000 THE DATTUS III METER / 16 16

EXAMPLE: UPGRADEABILITY f. M 1 – 8 C ATTRIBUTE A DATTUS III meter may have its capacity upsized to any capacity within the range of the model BENEFIT » Allows for reduced and very flexible inventory » Can significantly reduce operational costs associated with meter size changes in the field » Allows for more right-sizing of the meter f. M 1 – 1 M f. M 1 – 3 M f. M 1 – 1. 5 M f. M 1 – 2 M THE DATTUS III METER / 17 17

New Design Features in DATTUS III Sensor Technology; § Functionally, they are thermal sensors, same as previously generation DATTUS. § Sensors are encapsulated in glass, but sensitive enough to detect oscillations of the gas. § The glass coating considerably improves the robustness of the sensors. Sensitivity to liquids also greatly improved. Integral TC; § The sensor boards in the meter also include a component for temperature measurement. § Temperature compensation may be activated or deactivated by the customer. § Offers accuracy of +/- 1. 8 F (1. 0 C) 18 18

THANK YOU 19