Endress+Hauser Proline Prowirl R 200 - Page 18

Installation Proline Prowirl R 200
18 Endress+Hauser
The pressure loss for flow conditioners is calculated as follows: ∆ p [mbar] = 0.0085 ⋅ ρ
[kg/m
3
] ⋅ v
2
[m/s]
Example for steam Example for H
2
O condensate (
80 °C)
p = 10 bar abs ρ = 965 kg/m
3
t = 240 °C → ρ = 4.39 kg/m
3
v =2.5 m/s
v =40 m/s ∆ p = 0.0085 ⋅ 965 ⋅ 2.5
2
= 51.3 mbar
∆ p = 0.0085 ⋅ 4.394.39 ⋅ 40
2
= 59.7 mbar
ρ : density of the process medium
v: average flow velocity
Installation for delta heat measurements
Order code for "Sensor version", option 3 "Mass flow (integrated temperature
measurement)"
The second temperature measurement is taken using a separate temperature sensor.
The measuring device reads in this value via a communication interface.
•
In the case of saturated steam delta heat measurements, the Prowirl 200 must be
installed on the steam side.
• In the case of water delta heat measurements, the Prowirl 200 can be installed on
the cold or warm side.