Cubemass DCI
Hauser
11
Flow values (examples)
Basis for calculations
11.
Repeatability
Basis for calculations
11.
o.r. = of reading
Mass flow and volume flow (liquids)
• ±0.05% o.r. (mass flow)
• ±0.05% o.r. (volume flow)
Density (liquids)
• ±0.0005 g/cc
1 g/cc = 1 kg/l
Temperature
±0.25 °C ± 0.0025 · T °C
(±0.5 °F ± 0.0015 · (T – 32) °F)
T = Fluid temperature
Influence of medium
temperature
When there is a difference between the temperature for zero point adjustment and the process temperature,
the typical measured error is ±0.0002% of the full scale value / °C (±0.0001% of the full scale value / °F).
Influence of medium pressure
The tables below shows the effect on accuracy of mass flow due to a difference between calibration pressure
and process pressure.
Basis for calculations
Depends on the flow:
• Flow
≥
zero point stability : (basic accuracy : 100)
- Max. measured error: ±basic accuracy in % o.r.
- Repeatability: ±½ · basic accuracy in % o.r.
• Flow
<
zero point stability : (basic 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
Flow rate
Maximum measured error
[kg/h]
[lb/min]
[% o.r.]
0.1
0.0037
0.8
0.7
0.0257
0.114
2.5
0.0919
0.1
15
0.5513
0.1
DN
Medium pressure
[mm]
[inch]
[% o.r./bar]
[% o.r./psi]
1
1/24"
−
0.001
−
0.00007
2
1/12"
0
0
4
1/8"
−
0.005
−
0.0004
6
¼"
−
0.003
−
0.0002
o.r. = of reading
