Proline Prowirl 73 F, W
12 Endress+Hauser
Installation of Delta Heat Applications (second temperature - value read in via HART)
• For Saturated Steam Delat Heat Applications Prowirl 73 has to be installed on the steam side.
Temperature of the cold side is read in via HART.
• For Water Delta Heat Applications Prowirl 73 can be installed on either warm or cold side.
• The inlet and outlet lenghts specified above have to be followed:
A0001809
Saturated Steam or Water Delta Heat Application
Perforated plate flow conditioner
A specially designed perforated plate flow conditioner, available from Endress+Hauser, can be installed if it
is not possible to observe the inlet runs required. The flow conditioner is fitted between two piping flanges and
centered with mounting bolts. Generally, this reduces the inlet run required to 10 x DN whilst maintaining
accuracy.
A0001887
Flow conditioner
The pressure loss for flow conditioners is calculated as follows:
∆p [mbar] = 0.0085 · ρ [kg/m³] · v² [m/s]
Examples of pressure loss for flow conditioner
12
8xDN2xDN 5xDN
Esc
E
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+
• Example with steam
p = 10 bar abs
t = 240 °C → ρ = 4.39 kg/m³
v = 40 m/s
∆p = 0.0085 · 4.39 · 40² = 59.7 mbar
• Example with H
2
O condensate (80°C)
ρ = 965 kg/m³
v = 2.5 m/s
∆p = 0.0085 · 965 · 2.5² = 51.3 mbar
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