"A 40 year old Venturi meter at a major station cracked. We first replaced it with a single point insertion magmeter. Accuracy over a range of flows from 4-40 MGD was required. We found the accuracy of the single point insertion meter would degrade when different combinations of pumps were used. To solve this problem we installed a Multi-Mag over four years ago. Multi-Mag has given us the accuracy and extra confidence we need in our pump station flows." Bob Merrill Division Foreman United Water - NJ ith thousands of installations worldwide, our customers have consistently demonstrated their trust...

5 yearsensor warranty "The Authority had a need to monitor the flow characteristics at an existing water booster station and then transmit the information to our filtration plant. A previous insertion meter did not provide accurate information even though it was installed at a recommended location. The Multi-Mag's adaptability to a unique piping arrangement enabled the Authority to install an accurate meter within the station at a quarter of the cost." Bob Softcheck General Manager North Fayette County Municipal Authority, Dunbar, PA Location...Location...Location Our Insertable Magmeter Accurately...

AdvancedDifferential Pressure FlowmeterTechnology R V-CONE TECHNICAL BRIEF >

section page sec pg Section 1 - General Warranty 11Introduction 1.1 1 Illustrations: Fig. Pg. Principles of Operation 1.2 1 High and Low Ports 1 1 Reshaping the Velocity Profile 1.3 2 Velocity Profile 2 2 Section 2 - Features Flattened Velocity Profile 3 2 High Accuracy 2.1 3 Single Elbow and V-Cone 4 3 Repeatability 2.2 3 Double Elbow and V-Cone 5 3 Turndown 2.3 3 Signal Stability 6 4 Installation Requirements 2.4 3 Precision Tube 7 4 Long Term Performance 2.5 3 Wafer-Cone 8 4 Signal Stability 2.6 4 Calibration Facility 9 8 Low Permanent Pressure Loss 2.7 4 Valve Manifold 10 8 Sizing 2.8 4 Typical...

1.1 Introduction The McCrometer V-Cone Flowmeter is a patented technology that accurately measures flow over a wide range of Reynolds numbers, under all kinds of conditions and for a variety of fluids. It operates on the same physical principle as other differential pressure-type flowmeters, using the theorem of conservation of energy in fluid flow through a pipe. The V-Cones remarkable performance characteristics, however, are the result of its unique design. It features a centrally-located cone inside the tube. The cone interacts with the fluid flow, reshaping the fluidҒs velocity profile and...

2.1 High Accuracy The V-Cone primary element can be accurate to 0.5% of reading, and the Wafer-Cone can be accurate to ѱ 1.0%. The level of accuracy is dependent to a degree on application parameters and secondary instrumentation. > 2.2 Repeatability The V-Cone and the Wafer-Cone primary element exhibits excellent repeatability of 0.1%or better. 2.3 Turndown The turndown of the V-Cone can reach far beyond traditional Dp meters. A typical turndown for a V-Cone is 10 to 1. Greater turndowns are attainable. Flows with Reynolds numbers as low as 8000 will produce a linear signal. Lower Reynolds number...

2.6 Signal Stability Every Dp meter has a signal bounce . This means that even in steady flow, the signal generated by the primary element will fluctuate a certain amount. On a typical orifice plate, the vortices that form just after the plate are long. These long vortices create a high amplitude, low frequency signal from the orifice plate. This could disturb the Dp readings from the meter. The V-Cone forms very short vortices as the flow passes the cone. These short vortices create a low amplitude, high frequency signal. This translates into a signal with high stability from the V-Cone. Representative...

∆ P differential pressure (Dp) inWC P operating pressure psia D inside diameter inch T operating temperature Rankine d cone diameter inch Z gas compressibility . β beta ratio . S > F operating specific gravity . k isentropic exponent . S > 60F, 14.696 Psia STP specific grav. @ . k > 3 1 flow constant . ρ > water water density (62.3663) lb/ft k > 4 flow constant without C > D . P > b base pressure psia G > 2 C grav. constant (32.174) f/s T > b base temperature Rankine C > D flowmeter coefficient . Z > b base gas compressibility . Y gas expansion factor . viscosity cP ֏ flowing density (rho) ....

Dimensionless number which can be used to correlate meter calibrations in different fluids. 3.2.9 Flow Constant This equation can be used in substitute of 3.2.4 when the C D flow coefficient is not constant. See note 2. Used when C D is not constant. Fwater 3.3.2 Flowrate Conversion 3.3.3 Flowrate = P5.197k FACFS > 1a ρ > 3.3.4 Flowrate When C > D is not constant. = C P5.197k FACFS ρ D 4a Notes: 1. Material Thermal Expansion - The thermal expansion equations correct for dimensional changes which occur as the operating temperature deviates from the base temperature of 70 F (see 3.2.5 and 3.2.6...

note: 0.03613 converts P (inWC at 4C) to same units as P (Psia) > Actual Cubic Feet Per Second > Actual Cubic Feet Per Second When C > converts actual flow to standard flow at base conditions Standard Cubic Feet Per Second > McCROMETER, INC. 3255 W. Stetson Ave., Hemet, CA 92545 TEL 951-652-6811 FAX 951-652-3078  2006 by McCrometer, Inc. Printed in U.S.A 24517-16 Rev 3.6/10-06 >

3.6 Calibration Wafer-Cone and precision tube flowmeters less than 20" diameter are calibrated in one or more of the following McCrometer calibration facilities: > Calibration FacilitySize RangeCalibration FacilitySize Range Water 40k lb Gravimetric3" to 18"Water 1.5k lb Gravimetricup to 4" Water 5k lb Gravimetricup to 6" Air 80 cfm up to 2" McCrometer recommends that every V-Cone meter be calibrated. A calibration is required when the application requires the best accuracy. Insertion top-plate style flowmeters can be calibrated as an option. If an actual calibration is not requested, the coefficient...