Cadillac® Magnetic Flow Meter

To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed.

Please login or register to make a comment!

Cadillac ® Magnetic Flow Meter Central Station Steam Co. ® GENERAL INFORMATION 15615 SW 74th Ave., Ste #150 Phone: 888-556-3913 Tigard, OR 97224 Fax: 503-624-6131 www.cadillacmeter.com Rev 1001 Rev 0701 THE NEW INDUSTRY STANDARD H istorically, liquid flows have been measured by mechanical flow meters. However, as with any mechanical system, the meters are subject to wear and tear, and require regular maintenance and calibration.

Even though magnetic flow meters have been on th e market for years, their high cost of manufacture have limited their use. Current manufacturing technology has made the Cadilla c® magnetic flow meter a cost effective solution, especially in applications requiring analog (rate) or pulse (totalized) outputs. APPLICATIONS " Data Source for energy management system, DCS, district-wide systems.

" Energy-Customer Billing from accurately totalized flow measurements. " Basis for internal cost distribution using campus-wide systems. " Process monitoring from central control rooms.

" Cooling/heating load flows for Hydronic systems. " Process flows of all liquid types (acids, caustics, abrasives, high suspended solids) FEATURES " ACCURACY: +/-0.5% of the reading for liquids. High accuracy allows significant improvement in both measurement and customer billing.

" RANGEABILITY.: Typically 100 to 1 turndown or better. With seasonal heating/cooling load variation, the need for ... more. less.

a large turndown is essential. Cadillac® magnetic flow meters will accurately measure all load requirements with proper sizing. " LONGEVITY: Mean time between failure (MTBF) of 75 years. With no moving parts and through simple robust design the meter has unmeasured life expectancy. " MODERN ELECTRONICS: meeting the challenges of the next millennium Meters are equipped with electronics capable of registering locally, remotely or interfacing with an energy management system. Built to withstand the toughest conditions. C ENTRAL S TATION S TEAM C O .® 15615 SW 74 TH A VE ., S TE #150 T IGARD , OR 97224 P HONE : 888-556-3913 F AX : 503-624-6131 @ WWW . CADILLACMETER . COM THE LIQUID METER OF CHOICE T he Cadillac® magnetic flow meter is a rate and totalizing device, which is capable of measuring liquids of all types and consistency while providing an obstruction free flow path. Due to it 9s robust design, it is particularly suitable for pumped ho t condensate as well as hot and chilled water. In any heating/cooling system the Cadillac® magnetic flow meter is the number one technology choice due to Cadillac® 9s accuracy, linearity, reliability and rangeability. L ike many other flow meters, the Cadillac® magnetic flow meter is a velocity measuring device which computes flow by multiplying the effective cross sectional area of the flow meter with the detected fluid velocity. The meter has no moving part s and consists of a meter body with encapsulated coils, electrodes and an amplifier assembly. It detects velocity by measuring an induced voltage that is developed by moving the conductive fluid through a magnetic field. For a more detailed explanation, please review the cPrinciple of Operation d below. F araday 9s law states that, when you move a conductor perpendicular through a magnetic field, a voltage will be induced proportional to the velocity of the conductor. A mag- netic field is created by a set of coils which are encapsulated and rigidly retained in the meter flow tube and, when a conductive liquid moves through that magnetic field, a pair of electrodes measures the voltage in- duced by the movement of the liq- uid. The measurement is independ- ent of conductivity changes in the liquid as long as it remains above the minimum threshold of 5 uS/cm 2 . PRINCIPLE OF OPERATION T he relationship between the liquid velocity and the induced voltage is expressed in a meter K-factor. The meter K-factor is unique to each and every meter and is documented during a NIST traceable flow test com- pleted prior to shipment. With the K-factor established a highly accurate volumetric flow is calculated by multiply- ing the cross sectional area of the flow tube by the measured liquid velocity. This volumetric relationship can then be converted to various engineering units and the flow meter converter can then retransmit this information with a 4-20 mA current signal and / or conditioned pulse. An optional integral LCD Indicator/Totalizer is available to locally display and totalize in whatever engineering units prefered. C ENTRAL S TATION S TEAM C O .® 15615 SW 74 TH A VE ., S TE #150 T IGARD , OR 97224 P HONE : 888-556-3913 F AX : 503-624-6131 @ WWW . CADILLACMETER . COM Rev 0902 FLOW METER SIZING INFORMATION T he Cadillac® magnetic flow meter has a 304 stainless steel body and is always sold with grounding rings installed. The pri- mary reason for providing grounding rings is to contain the magnetic field within the meter body and to assure the liquid poten - tial is grounded properly. As a consequence, the induced voltage is remarkably free of noise allowing the meter to reliably mea s- ure extremely low fluid velocities. The table below lists minimum as well as maximum flow ranges for each meter size, in GPM for liquids and lbs/hr for condensate. MagmeterLiquid Flow Range TableCondensate Flow Range Table Meter Body (inches) Size Minimum Volumetric (gal/min) Range Maximum Volumetric (gal/min) Range Minimum Condensate (lbs/hr) Range Maximum Condensate (lbs/hr) Range 0.1" 0.00 - 0.024 0.00 - 0.800 0.00 - 12.00 0.00 - 400.0 0.17" 0.00 - 0.061 0.00 - 2.020 0.00 - 30.50 0.00 - 1010 0.25" 0.00 - 0.138 0.00 - 4.585 0.00 - 69.00 0.00 - 2300 0.5" 0.00 - 0.281 0.00 - 28.00 0.00 - 140.0 0.00 - 14000 1" 0.00 - 0.782 0.00 - 78.00 0.00 - 391.0 0.00 - 39000 1.5" 0.00 - 2.000 0.00 - 200.0 0.00 - 1000 0.00 - 100000 2" 0.00 - 3.112 0.00 - 310.0 0.00 - 1556 0.00 - 155000 3" 0.00 - 8.000 0.00 - 800.0 0.00 - 40000.00 - 400000 4" 0.00 - 12.50 0.00 - 1250 0.00 - 6250 0.00 - 625000 6" 0.00 - 28.00 0.00 - 2800 0.00 - 14000 0.00 - 1400000 8" 0.00 - 50.00 0.00 - 5000 0.00 - 25000 0.00 - 2500000 10" 0.00 - 78.00 0.00 - 7800 0.00 - 39000 0.00 - 3900000 12" 0.00 - 112.0 0.00 - 11200 0.00 - 56000 0.00 - 5600000 I n comparison, the straight pipe run requirements for all other magnetic flow meters are as follows: Downstream of the meter: Ê Expander (2-5) diameters Ê Tee - (2-5) diameters Ê Elbow - (2-5) diameters Ê Valves - (2-10) diameters " Upstream of the meter: Ê Expander - (10) diameters Ê Tee - (5) diameters Ê Elbow - (5) diameters Ê Valves - (10) diameters U nlike other technologies such as the Cadillac® Vortex flow meter, magnetic flow me- ters do not have a low flow cutoff, essentially allowing the meter to read to zero. With such a wide flow range capa- bility for the technology, most applications can be addressed with meters at full line size. I nstallation requirements have been redefined with the Cadillac magnetic flow meter. E mploying coil and plate shaping techniques the Cadillac® meter pro- vides a uniform magnetic flux distri- bution within the flow tube. This allows the meter to measure and sample uniformly the entire flow tube area. I n addition, the electronics provide high frequency DC square wave sig- nal generation and flow signal sam- pling. When combined these two techniques eliminate all straight run flow profiling requirements. I n practice, this means the Cadillac magnetic flow meters may be in- stalled next to elbows, tees, valves, etc. without any effect in meter accu- racy or stability. (See Illustrations) D = nominal flow meter diameter 10D 5D Upstream Downstream Flow 10D 5D Flow Upstream Downstream Traditional Magmeter Piping Requirements Traditional Magmeter Piping Requirements Traditional Magmeter Piping Requirements D = nominal flow meter diameter No Upstream No Downstream Flow 1.5D 1.5D 1.5D 1.5D No Upstream No Downstream Flow Cadillac Magmeter Piping Requirements Cadillac Magmeter Piping Requirements Cadillac Magmeter Piping Requirements METER INSTALLATION Rev 051605 C ENTRAL S TATION S TEAM C O .® 15615 SW 74 TH A VE ., S TE #150 T IGARD , OR 97224 P HONE : 888-556-3913 F AX : 503-624-6131 @ WWW . CADILLACMETER . COM CADILLAC® MAGNETIC FLOW METER GENERAL SPECIFICATIONS CADILLAC® MAGMETER MODEL NUMBER STRUCTURE FLANGED METER DIMENSIONS CADILLAC® MAGNETIC FLOW METER Phone: 888-556-3913 or e-mail: Cadillacmeter@aol.com for Engineering Support Meter Size0.5"1.0"1.5"2.0"3.0"4.0"6.0"8.0"10.0"12.0"14.0"16.0" "A" 5.50"6.25"6.75"7.125"9.00"9.50"10.25"11.75"13.75"15.75"17.75"19.63" "B" 10.25"10.75"11.88"12.25"13.50"15.00"17.25"19.50"21.63"24.25"25.88"28.00" "C" 0.50"1.00"1.50"2.00"3.00'4.00"6.00"8.00"10.00"12.00"14.00"16.00" "H1" 1.75"2.125"3.00"3.00"3.75"4.50"5.50"6.75"8.00"9.63"10.50"11.88" Weight ANSI Class 150lb 14 lbs17 lbs23 lbs29 lbs45 lbs57 lbs86 lbs125 lbs255 lbs302 lbs359 lbs463 lbs " Meter will consist of a full-bore body with encapsulated and rigidly retained set of coils. " Meter available with remote or integral electronics with indication and totalization. " Meter operates at + 0.5% accuracy without flow profiling or piping straight run exceeding 1.5 diameters. " Meter available with pulse and analog (4-20 mA) outputs. " Meter will provide instantaneous and totalized flow available at local indicator or remotely through outputs. " Meter measures flow using Faraday 9s law ( Induce voltage is directly proportional to the velocity of the conductive liquid ) " Meter K-factor is stable and not influenced by external piping or mounting orientation. " Meter will have uniform magnetic field flux distribution eliminating piping straight run and flow profiling. " Meter will measure fluids with conductivity greater than or equal to 5.0 uS/cm 2 . APPLICATION NOTE: T he Cadillac® magnetic flow meter is an excellent choice for gravity flow applications. However for proper flow meter operation the piping and flow tube must be full at all times. This requires the meter to be mounted in such a way to provide a cwet leg d as illustrated below. Flow Gravity flow with cwet leg d piping CMAG Cadillac Ma g netic Flow Meter C M C CMAG Remote Converter A Size 0.5"RRemote Mounting B Size 1"IIndicator/Totalizer C Size 1.5"UUniversal Mounting Bracket D Size 2"XXFTInterconnecting Cable (length in feet) E Size 3"FMFM Approvals F Size 4" G Size 6" H Size 8" I Size 10" J Size 12" K Size 14" L Size 16" II Integral Converter with Indicator/Totalizer RC Remote Converter W Wafer Body (Ceramic Liner) - thru 4" only F Flanged Body 150 ANSI Class 150 300 ANSI Class 300 S Electrode Material - 316L Stainlees Steel X Elctrode Material - Other C Liner Material - PFA (Teflon) D Liner Material - EPDM (Rubber) S Ground Ring Material - 316 Stainless Steel X Ground Ring Material - Other FM FM Approvals

less