Endress+Hauser HART Proline Promass 83, Operating Instructions Manual

Page: 130 / 148

Technical data Proline Promass 83
130 Hauser
Flow values (example DN 350 (14"))
Repeatability
Design fundamentals
→
130.
• Mass flow and volume flow (liquids):
±0.025% o.r. (PremiumCal, for mass flow)
±0.05% o.r.
• Mass flow (gases):
±0,25% o.r.
• Density (liquids): ±0.00025 g/cm
3
• Temperature: ±0.25 °C ± 0.0025 · T °C; ±0.5 °F ± 0.0015 · (T - 32) °F
Influence of medium temperature
When there is a difference between the temperature for zero point adjustment and the
process temperature, the typical measured error of the sensor is ±0.0002% of the full scale
value / °C (±0.0001% of the full scale value/°F).
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.
Turn down Flow
[kg/h] [lb/min]
1 : 500 8200 301.4
1 : 100 41000 1507
1 : 50 82 000 3014
1 : 20 205 000 7535
1 : 10 410 000 15070
1 : 1 4100 000 150700
Design fundamentals
→
130
DN Promass F (standard)
[mm] [inch] [% o.r./bar]
350 14 –0.009
Base accuracy for
Mass flow liquids, PremiumCal 0.05
Mass flow liquids 0.10
Volume flow liquids 0.10
Mass flow gases 0.35