Proline Promass 83E/F/O Modbus RS485 Operating Instructions

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Technical dataLimiting flowPressure loss (SI units)Proline Promass 83 Modbus RS485See the "Measuring range" section Page 101 ff.Select nominal diameter by optimizing between required flow range and permissible pressure loss.See the "Measuring range" section for a list of max. possible full scale values.• The minimum recommended full scale value is approx. 1/20 of the max. full scale value.• In most applications, 20 to 50% of the maximum full scale value can be considered ideal.• Select a lower full scale value for abrasive substances such as liquids with entrained solids (flow velocity < 1 m/s (3 ft/s)).• For gas measurement the following rules apply:– Flow velocity in the measuring tubes should not be more than half the sonic velocity(0.5 Mach).– The maximum mass flow depends on the density of the gas: formula ä 109Pressure loss depends on the properties of the fluid and on its flow. The following formulas can beused to approximately calculate the pressure loss:Pressure loss formulas for Promass F, EReynolds numberRe =2·g ·d· · a0004623Re 2300 1)p=K· · g · Promass F DN 2500.25 1.85 –0.86a0004626p = K ·a0.251-a+ · · g · eb · ( – 10–6 )1.85 –0.86a0012135Re < 2300p =K1· · g +0.25 2K2 · · ga0004628p = pressure loss [mbar] = kinematic viscosity [m2/s]g = mass flow [kg/s] = fluid density [kg/m3]d = inside diameter of measuring tubes [m]K to K2 = constants (depending on nominal diameter)a = 0.3b = 910001)To compute the pressure loss for gases, always use the formula for Re 2300.Pressure loss formulas for Promass H, I, S, PReynolds number4·gRe = ·d· · a0003381Re 2300 1)0.25· g 1.75 · -0.75+K3 · g 2a0004631Re < 2300p =K1· ·g+K3 · g 2a0004633p = pressure loss [mbar] = kinematic viscosity [m 2 /s]g = mass flow [kg/s] = fluid density [kg/m 3 ]d = inside diameter of measuring tubes [m]K to K3 = constants (depending on nominal diameter)1)To compute the pressure loss for gases, always use the formula for Re 2300.Page 136 • MN0M030Issue/Rev. 0.2 (12/12)
Proline Promass 83 Modbus RS485Technical dataPressure loss formulas for Promass AReynolds number4·gRe = ·d· · a0003381Re 2300 1)0.25 1.75 –0.75p=K· · g · a0003380Re < 2300p=K1· ·ga0003379p = pressure loss [mbar] = kinematic viscosity [m 2 /s]g = mass flow [kg/s] = density [kg/m ]d = inside diameter of measuring tubes [m]K to K1 = constants (depending on nominal diameter)1)To compute the pressure loss for gases, always use the formula for Re 2300.Pressure loss formulas for Promass O, XReynolds numberPressure lossp = pressure loss [mbar] = kinematic viscosity [m 2 /s]g = mass flow [kg/s] = density [kg/m 3 ]4 gRe = d n1( )A 1/A 2 g2 3p = (A 0 + A1Re ) 5 n dd = inside diameter of measuring tubes [m]A to A = constants (depending on nominal diameter)n = number of tubes22A0015582A0015583Issue/Rev. 0.2 (12/12) MN0M030 • Page 137
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Issue/Rev. 0.2 (12/12)Coriolis Mass
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Proline Promass 83 Modbus RS485Tabl
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Proline Promass 83 Modbus RS485Safe
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Proline Promass 83 Modbus RS485Iden
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InstallationProline Promass 83 Modb
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WiringProline Promass 83 Modbus RS4
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OperationProline Promass 83 Modbus
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CommissioningProline Promass 83 Mod
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Proline Promass 83E/F/O Modbus RS485 Operating Instructions

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