Endress+Hauser Proline Promag 55 - Measuring accuracy

Technical data Proline Promag 55 PROFIBUS DP/PA
144 Endress+Hauser
10.1.6 Measuring accuracy
Reference conditions To DIN EN 29104 and VDI/VDE 2641:
• Fluid temperature: +28 °C ± 2 K
• Ambient temperature: +22 °C ± 2 K
• Warm-up time: 30 minutes
Installation:
• Inlet run > 10 × DN
• Outlet run > 5 × DN
• Sensor and transmitter grounded.
• Sensor centered relative to the pipe.
Maximum measured error Volume flow
Pulse output:
• Standard: ±0.2% o.r. ± 2 mm/s (o.r. = of reading)
• With option brush electrodes: ±0.5% o.r. ± 2 mm/s (o.r. = of reading)
Current output:
in addition typically ±5 μA
!
Note!
Supply-voltage fluctuations have no effect within the specified range.
A0004456
Fig. 70: Max. measured error in % of reading
Conductivity
• Max. measuring error not specified
• Without temperature compensation
Repeatability Volume flow
• Standard: max. ±0.1% o.r. ± 0.5 mm/s (o.r. = of reading)
• With brush electrodes (Option): max. ±0.2% o.r. ± 0.5 mm/s (o.r. = of reading)
Conductivity
• Max. ±5% o.r. (o.r. = of reading)
0
1
2.5
[%]
2.0
1.5
1.0
0.5
0
2 4 6 8 10 [m/s]
v
5 10 15 20 25 30 32 [ft]0