User's Manual for CM6G - Yokogawa

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2< Principle of Measurement>When using orifice and take out Fa, Fg as a differential pressure of before and after orifice, Fa and Fgare represented by the following formula:∆ Pa∆ PgFa = Ka Fg = Kg(1.3)ρ aρ gwhere: ∆Pa, ∆Pg:ρa, ρg:ka, kg:Air, gas differential pressure between before and after orificeDensity of the air and the gasOrifice constant figure of the air and the gas(Orifice coefficient orifice sectional area)If insert formula (1.3) into formula (1.2), ∆θ is represented by the following formula:1∆ Pg∆θ = C.K. •(1.4)ρg∆ Pa(C =1Cpa (1+g)Kg• • ρa )KaAccording to formula (1.4), if ∆Pa, ∆Pg are constant, temperature difference ∆θ is in proportion to WI(k/ √ρg ) or calorific value (K). Thus we can measure continuously WI after ∆θ measurement, and thecalorific valve after the measurement and calculation of the density.IM 11R02A01-02E
CustomerMaintenanceParts ListModel CM6GGas Calorimeter, Calorie Detector12Item Part No. Qty Description12E7023RAE7023EA11Print Cir. Board AssyIgnition Trans AssyAll Rights Reserved, Copyright © 1996, Yokogawa Electric Corporation.Subject to change without notice.CMPL 11R02A01-02E3nd Edition : Apr. 2011 (YK)
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User’sManualModel CM6GGas Calorim
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iiTIPThis symbol gives information
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iModel CM6GGas CalorimeterIM 11R02A
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iii9.4 Calibration of the Density M
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1. Outline 1-1Model CM6G Gas calori
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2. Specifications 2-12.1 Standard S
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2-3Utility : Water : Approx. 0.2 l/
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2-52.2.4 OptionName Part no. Descri
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2-72.4.2 For Town Gas Application (
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2-92.4.4 Dimensions of Options1. Pr
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3-13. InstallationsObserve the foll
Page 25 and 26: 4-14. Outside PipingsThe connection
Page 27 and 28: 5-15. External WiringsExternal wire
Page 29 and 30: 6. Construction and FunctionTypical
Page 31 and 32: 6-3Standard Flow Sheet1. Town Gas A
Page 33 and 34: 6.3 Differential Pressure Detection
Page 35 and 36: 6-7POWERLampIGNITLampMEASLampALARML
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Page 44 and 45: 6-166.6 Density MeterThe GD400G is
Page 46 and 47: 7-27.4 Supply of the AirOpen valve
Page 48 and 49: 7-47.7 Air Differential Pressure Ad
Page 50 and 51: 8-28.2 Stopping Operations8.2.1 Lon
Page 52 and 53: 9-29.1.2 For Steel Mill UseSEE ALSO
Page 54 and 55: 9-49.3 Calibration of the Computing
Page 56 and 57: 10-210.2 Regular CheckRefer to Figu
Page 58 and 59: 10-410.2.4 Washing Bubbler or Press
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Page 66 and 67: 11-47) When the density meter is at
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Page 70 and 71: 12-2b) Print circuit board assembly
Page 72 and 73: 12-412.3 Preheater E7023NGNo. Name
Page 74 and 75: 12-612.8 Temperature Controller E70
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Page 83 and 84: 2-2Utility :Instrument Air : Approx
Page 85 and 86: 2-42.2.2 Standard AccessoriesFollow
Page 87 and 88: 5-25.1 Notes on WiringWARNING• Ca
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User's Manual for CM6G - Yokogawa

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