| LIQUID CORRECTION FORMULAE* |
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| Information required to size for conditions other than water: |
|
• Specific Gravity of Fluid (@ Operating Conditions)
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| • Fluid Temperature (@ Operating Conditions) |
| • Viscosity (@ Operating Conditions) |
| • Specific Gravity of float to be use |
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| 1. Convert customers flow rate unit of measure to a standard unit of measure. (GPM) |
| RATE OF FLOW UNIT CONVERSIONS: |
| GPM (Flowing Liquid) |
CC/MIN (Flowing Liquid) |
| = GPH / 60 |
= GPM x 3785 |
| = CC/MIN / 3,785 |
= GPH x 63.08 |
| = CC/HR / (3,785 x 60) |
= CC/HR / 60 |
| = LPM / 3.785 |
= LPM x 1,000 |
| =LPH / 227.1 |
= LPH x 16.67 |
| = M3/MIN x 264.2 |
= M3/MIN x 1,000,000 |
| = M3/HR x 4.402 |
= M3/HR x 16,667 |
| = PINTS/MIN / 8 |
= PINTS/MIN x 473.1 |
| = FT3/MIN x 7.48 |
= FT3/MIN x 28,320 |
| = FT3/HR / 8.021 |
= FT3/HR x 472 |
| =Kg/MIN x 0.264 / Sp. Gr. |
= Kg/MIN x 1,000 / Sp. Gr. |
| = Kg/HR / (227 x Sp. Gr.) |
= Kg/HR x 16.67 / Sp. Gr. |
| = Lbs/MIN / (8.347 x Sp. Gr.) |
= Lbs/MIN x 453.6 / Sp. Gr. |
| = Lbs/HR / (500.8 x Sp. Gr.) |
= Lbs/HR x 7.56 / Sp. Gr. |
| = GRAMS/MIN / (3,785 x Sp. Gr.) |
= GRAMS/MIN / Sp. Gr. |
| = GRAMS/HR / (227,000 x Sp. Gr.) |
= GRAMS/HR / (60 x Sp. Gr.) |
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| Note: Use Correction Factor formula given above to calculate GPM OR CC/MIN (Water Equivalent) |
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| 2. Calculate variable area correction factor. |
| CORRECTION FORMULA: |
 |
| Float Density: |
| Teflon: 2.20 |
316SS: 8.04 |
| Glass: 2.53 |
Hastelloy® C-276: 8.94 |
| Sapphire: 3.989 |
Carboloy: 15.0 |
| Titanium: 4.5 |
Tantalum: 16.6 |
| 316L SS: 8.03 |
|
|
| FLUID DENSITY CONVERSIONS: |
| Sp. Gr. |
= Lbs/FT3 / 62.4 |
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= Kg/M3 / 1000 |
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= g/cm3 |
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= 141.5 / (131.5 + API) |
|
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| 3. Calculate water equivalent flow rate. |
| Water Equivalent = Requested Flow rate * Correction |
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| 4. Once a meter is selected, the maximum or minimum flow rate can be calculated for the customers conditions. |
| Customer Flow = Water Equivalent Flow / Correction Factor |
| *Our Product Selection Guide available on CD-Rom can automate this process. Please call the factory for details. |
|
| GAS CORRECTION FORMULAE* |
| |
| Information required to size for conditions other than air at STP: |
| • Operating Temperature |
| • Operating Back Pressure |
| • Specific Gravity of Fluid at STP |
| |
| 1. Convert customers flow rate unit of measure to a standard unit of measure. (SCFM) |
| RATE OF FLOW UNIT CONVERSIONS: |
| SCFM (Flowing Gas) |
SCC/MIN (Flowing Gas) |
| = SCFH / 60 |
= SCFM x 28,317 |
| = SCIM / 1,728 |
= SCFH x 472 |
| = SLPM / 28.317 |
= SCIM x 16.39 |
| = SLPH / 1,699 |
= SLPM x 1,000 |
| = SM3/MIN x 35.31 |
= SLPH x 16.67 |
| = SM3/HR x 0.5885 |
= SM3/MIN x 1,000,000 |
| = NM3/MIN x 37.99 |
=@ SM3/HR x 16,667 |
| = NM3/HR x 0.6331 |
= NM3/MIN x 1,075,785 |
| = SCC/MIN / 28,317 |
= NM3/HR x 17,929 |
| = Kg/MIN x 29.39 / Sp. Gr. |
= Kg/MIN x 832,000 / Sp. Gr. |
| = Kg/HR x 0.490 / Sp. Gr. |
= Kg/HR x 13,876 / Sp. Gr. |
| =@ Lbs/MIN x 13.33 / Sp. Gr. |
= Lbs/MIN x 377,500 / Sp. Gr. |
| = Lbs/HR x 0.2222 / Sp. Gr. |
= Lbs/HR x 6292 / Sp. Gr. |
| = Lbs/DAY x 0.00926 / Sp. Gr. |
|
| = ACFM x (Oper PSIG + 14.7) x 530 |
|
|
| 14.7 x (Oper oF + 460) |
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| Note: Use Correction Factor formulae given above to calculate SCFM or SCC/MIN (Air Equivalent) |
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| 2. Calculate variable area correction factor. |
| CORRECTION FORMULAE: |
| Pressure Correction Factor (PCF) = |
 |
| Temperature Correction Factor (TCF) = |
 |
| Specific Gravity Correction Factor (SGCF) = |
 |
|
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| TEMPERATURE CONVERSIONS: |
| Deg. F |
= (9 / 5) x °C) +32 |
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= °K – 459.67 |
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= (9 / 5) x (°R – 273.15) + 32 |
|
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| FLUID DENSITY CONVERSIONS: |
| Sp. Gr. |
= Lbs/FT3 / 0.075 |
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= Kg/M3 / 1.2 |
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= Mol. Wt. / 29.0 |
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= g/cm3 / 0.0012 |
|
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| PRESSURE CONVERSIONS: |
| PSIG |
= Ft. Water / 2.308 |
= (Pa / (1.013 x 100,000) x 14.7 |
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= In. Water / 27.73 |
= PSIA – 14.7 |
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= mm Water / 704 |
= (ATM x 14.7) – 14.7 |
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= In. Hg / 2.036 |
= ((TORR / 760) x 14.7) – 14.7 |
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= mm Hg / 51.7 |
= ((Bars / 1.013) x 14.7) – 14.7 |
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= Kg/cm2 x 14.228 |
= (Millibars / 1013) x 14.7) – 14.7 |
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= (KPa / 101.3) x 14.7 |
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|
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| 3. Calculate air equivalent flow rate. |
| Standard Flow Rate = Customer's Flow Rate x (PCF x TCF x SGCF) (Air Equivalent) |
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| 4. Once a meter is selected, the maximum or minimum flow rate can be calculated for the customers conditions. |
|
Flow Mete's Special Scale = Catalog Flow Rate xPCF xTCF xSGCF (Air @ STP)
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