Proline Promass 80
Technical data
Hauser
87
Repeatability
Design fundamentals
o.r. = of reading; 1 g/cc = 1 kg/l; T = medium temperature
• Mass flow and volume flow (liquid): ±0.05% o.r.
• Mass flow (gas): ±0.25% o.r.
• Density (liquid): ±0.00025 g/cc
• 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.
o.r. = of reading
DN
[mm]
[inch]
[% o.r./bar]
8
3/8"
no influence
15
½"
no influence
15 FB
½" FB
0.003
25
1"
0.003
25 FB
1" FB
no influence
40
1 ½"
no influence
40 FB
1 ½" FB
no influence
50
2"
no influence
50 FB
2" FB
0.003
80
3"
0.003
o.r. = of reading; FB = Full bore (voller Nennweitenquerschnitt)
Base accuracy for
Mass flow liquids
0.15
Volume flow liquids
0.15
Mass flow gases
0.50
