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

Technical dataProline Promass 83 Modbus RS485Influence of medium pressureThe table below shows the effect on accuracy of mass flow due to a difference between calibrationpressure and process pressure.DN[mm] [inch] [% o.r./bar]8 3/8 0.00615 ½ 0.00415 FB ½ FB 0.00625 1 0.00625 FB 1 FB no influence40 1½ no influence40 FB 1½ FB –0.00350 2 –0.00350 FB 2 FB 0.00380 3 0.003FB = Full boreDesign fundamentalsDependent on the flow:•Flow Zero point stability ÷ (Base accuracy ÷ 100)– Max. measured error: ±Base accuracy in % o.r.– Repeatability: ± ½ · Base accuracy in % o.r.• Flow < Zero point stability ÷ (Base accuracy ÷ 100)– Max. measured error: ± (Zero point stability ÷ measured value) · 100% o.r.– Repeatability: ± ½ · (Zero point stability ÷ measured value) · 100% o.r.Base accuracy forMass flow liquids 0.10Volume flow liquids 0.10Mass flow gases 0.50Performance characteristicPromass Oo.r. = of reading; 1 g/cm 3 = 1 kg/l; T = medium temperatureMaximum measured errorThe following values refer to the pulse/frequency output.The additional measured error at the current output is typically ±5 A.Design fundamentals ä 126.• Mass flow and volume flow (liquids):±0.05% o.r. (PremiumCal, for mass flow)±0.10% o.r.• Mass flow (gases): ±0.35% o.r.• Density (liquids)– Reference conditions: ±0.0005 g/cm³– Field density calibration: ±0.0005 g/cm³(valid after field density calibration under process conditions)– Standard density calibration: ±0.01 g/cm³(valid over the entire temperature range and density range ä 134)Page 124 • MN0M030Issue/Rev. 0.2 (12/12)