Proline Promass 84F
Hauser
13
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 Promass 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
Promass F
Promass F High-temperature version
[mm]
[inch]
[% o.r./bar]
[% o.r./bar]
8
3/8"
no influence
–
15
½"
no influence
–
25
1"
no influence
no influence
40
1½"
–0.003
–
50
2"
–0.008
–0.008
80
3"
–0.009
–0.009
100
4"
–0.007
–
150
6"
–0.009
–
250
10"
–0.009
–
o.r. = of reading
Base accuracy for
Mass flow liquids, PremiumCal
0.05
Mass flow liquids
0.10
Volume flow liquids
0.10
Mass flow gases
0.35
