Technical data Proline Promass 83 PROFIBUS DP/PA
156 Endress+Hauser
Density measurement (liquid)
Promass F:
±0.00025 g/cc (1 g/cc = 1 kg/l)
Promass M, H, E, A:
±0.0005 g/cc
Promass I:
±0.001 g/cc
Temperature measurement
±0.25 °C ±0.0025 x T (T = fluid temperature in °C)
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. The typical measured error of the Promass E sensor is ±0.0003% of the full scale
value / °C.
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.
Promass F, M:
Promass E:
With nominal diameters DN 8...40, the effect on accuracy of mass flow due to a difference between
calibration pressure and process pressure can be neglected.
For DN 50 the effect is –0.009% o.r. / bar (o.r. = of reading).
Promass A:
A difference between calibration pressure and process pressure has no effect on measuring accuracy.
DN Promass F
Promass F, high-temperature
[% o.r./bar]
Promass M
[% o.r./bar]
Promass M / (high pressure)
[% o.r./bar]
8 No influence 0.009 0.006
15 No influence 0.008 0.005
25 No influence 0.009 0.003
40 -0.003 0.005 -
50 -0.008 No influence -
80 -0.009 No influence −
100 -0.012 −−
150 -0.009 −−
250 -0.009 −−
o.r. = of reading
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