Endress+Hauser HART Proline Promass 83, Operating Instructions Manual

Page: 122 / 148

Technical data Proline Promass 83
122 Hauser
Influence of medium pressure
The table below shows the effect on accuracy of mass flow due to a difference between
calibration pressure and process pressure.
Design fundamentals
Dependent 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.
Performance characteristic
Promass O o.r. = of reading; 1 g/cm
3
= 1 kg/l; T = medium temperature
Maximum measured error
The following values refer to the pulse/frequency output.
The additional measured error at the current output is typically ±5
μ
A.
Design fundamentals
→
124.
• 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
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132)
– Special density calibration: ±0.001 g/cm³
(optional, valid range: +5 to +80 °C (+41 to +176 °F) and 0.0 to 2.0 g/cm³)
• Temperature: ±0.5 °C ± 0.005 · T °C; ±1 °F ± 0.003 · (T - 32) °F
DN
[mm] [inch] [% o.r./bar]
8 3/8 0.006
15 ½ 0.004
15 FB ½ FB 0.006
25 1 0.006
25 FB 1 FB no influence
40 1½ no influence
40 FB 1½ FB –0.003
50 2 –0.003
50 FB 2 FB 0.003
80 3 no influence
FB = Full bore
Base accuracy for
Mass flow liquids 0.10
Volume flow liquids 0.10
Mass flow gases 0.50