Endress+Hauser promass 63 Betriebsanleitung Seite 138
Massedurchflußmeßsystem
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Andere Handbücher für promass 63:
- Einbauanleitung (4 Seiten) ,
- Betriebsanleitung (148 Seiten)
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10 Technische Daten
138
Druckverluste
Der Druckverlust hängt von den Mediumseigenschaften und dem vorhandenen
Durchfluß ab. Für Flüssigkeiten kann dieser näherungsweise mit den folgenden
Formeln berechnet werden:
Promass A / I
⋅
4 m
Re =
Reynolds-
π
⋅ ⋅ ⋅
υ ρ
d
zahl
Re ≥ 2300 *
∆p
=
⋅
υ
0 25
K
∆p
=
⋅
υ
Re < 2300
K
1
∆p = Druckverlust [mbar]
υ = Kinematische Viskosität [m
⋅
m = Massedurchfluß [kg/s]
* Bei Gasen ist für die Berechnung des Druckverlustes grundsätzlich die Formel für
Re ≥ 2300 zu verwenden.
Nennweite
DN 1
Promass A
DN 2
DN 4
Promass A
DN 2
Hochdruck
DN 4
DN 8
DN 15
DN 15 *
Promass I
DN 25
DN 25 *
DN 40
DN 40 *
DN 50
DN 8
DN 15
Promass M
DN 25
DN 40
DN 50
DN 80
DN 8
Promass M
DN 15
Hochdruck
DN 25
DN
8
DN 15
Promass F
DN 25
DN 40
DN 50
DN 80
DN 100
Druckverlustangaben inklusive Übergang Meßrohr(e) / Rohrleitung
Beispiele von Druckverlustdiagrammen für Wasser finden Sie auf der folgenden Seite!
* DN 15, 25, 40 "FB" = Promass I mit vollem Nennweitenquerschnitt
⋅
2
K
3
m
−
,
⋅
1 75
,
⋅
ρ
0 75
,
+
m
ρ
⋅
2
K
3
m
⋅
+
m
ρ
ρ
=
Mediumsdichte [kg/m
2
/s]
d
=
Innendurchmesser der Meßrohre [m]
K...K3 =
Konstanten (nennweitenabhängig)
d [m]
K
1,10 ⋅ 10
–3
1,2 ⋅ 10
11
1,80 ⋅ 10
–3
1,6 ⋅ 10
10
3,50 ⋅ 10
–3
9,4 ⋅ 10
8
1,40 ⋅ 10
–3
5,4 ⋅ 10
10
–3
9
3,00 ⋅ 10
2,0 ⋅ 10
8,55 ⋅ 10
–3
8,1 ⋅ 10
6
11,38 ⋅ 10
–3
2,3 ⋅ 10
6
17,07 ⋅ 10
–3
4,1 ⋅ 10
5
17,07 ⋅ 10
–3
4,1 ⋅ 10
5
25,60 ⋅ 10
–3
7,8 ⋅ 10
4
25,60 ⋅ 10
–3
7,8 ⋅ 10
4
–3
4
35,62 ⋅ 10
1,3 ⋅ 10
–3
4
35,62 ⋅ 10
1,3 ⋅ 10
5,53 ⋅ 10
–3
5,2 ⋅ 10
7
8,55 ⋅ 10
–3
5,3 ⋅ 10
6
11,38 ⋅ 10
–3
1,7 ⋅ 10
6
17,07 ⋅ 10
–3
3,2 ⋅ 10
5
25,60 ⋅ 10
–3
6,4 ⋅ 10
4
38,46 ⋅ 10
–3
1,4 ⋅ 10
4
4,93 ⋅ 10
–3
6,0 ⋅ 10
7
–3
6
7,75 ⋅ 10
8,0 ⋅ 10
10,20 ⋅ 10
–3
2,7 ⋅ 10
6
5,35 ⋅ 10
–3
5,70 ⋅ 10
7
8,30 ⋅ 10
–3
5,80 ⋅ 10
6
12,00 ⋅ 10
–3
1,90 ⋅ 10
6
17,60 ⋅ 10
–3
3,50 ⋅ 10
5
26,00 ⋅ 10
–3
7,00 ⋅ 10
4
40,50 ⋅ 10
–3
1,10 ⋅ 10
4
51,20 ⋅ 10
–3
3,54 ⋅ 10
3
Promass 63
Promass M / F
⋅
2 m
Re =
π
⋅ ⋅ ⋅
υ ρ
d
∆p
=
⋅
υ
0 25
,
⋅
1 85
,
⋅
ρ
K
m
⋅
υ
0 25
K
2
∆p
=
⋅
υ
⋅
+
K
1
m
3
]
K1
K2
1,3 ⋅ 10
11
–
2,4 ⋅ 10
10
–
2,3 ⋅ 10
9
–
6,6 ⋅ 10
10
–
9
4,3 ⋅ 10
–
3,9 ⋅ 10
7
–
1,3 ⋅ 10
7
–
3,3 ⋅ 10
6
–
3,3 ⋅ 10
6
–
8,5 ⋅ 10
5
–
8,5 ⋅ 10
5
–
5
2,0 ⋅ 10
–
5
2,0 ⋅ 10
–
8,6 ⋅ 10
7
1,7 ⋅ 10
7
1,7 ⋅ 10
7
9,7 ⋅ 10
5
5,8 ⋅ 10
6
4,1 ⋅ 10
5
1,2 ⋅ 10
6
1,2 ⋅ 10
5
4,5 ⋅ 10
5
1,3 ⋅ 10
4
8,2 ⋅ 10
4
3,7 ⋅ 10
3
1,4 ⋅ 10
8
2,8 ⋅ 10
7
7
6
2,5 ⋅ 10
1,4 ⋅ 10
8,9 ⋅ 10
6
6,3 ⋅ 10
5
9,60 ⋅ 10
7
1,90 ⋅ 10
7
1,90 ⋅ 10
7
10,60 ⋅ 10
5
6,40 ⋅ 10
6
4,50 ⋅ 10
5
1,30 ⋅ 10
6
1,30 ⋅ 10
5
5,00 ⋅ 10
5
1,40 ⋅ 10
4
7,71 ⋅ 10
4
1,42 ⋅ 10
4
3,54 ⋅ 10
4
5,40 ⋅ 10
3
Endress+Hauser
−
0 86
,
,
⋅
2
m
ρ
K3
0
0
0
0
0
129,95 ⋅ 10
4
23,33 ⋅ 10
4
0,01 ⋅ 10
4
5,89 ⋅ 10
4
0,11 ⋅ 10
4
1,19 ⋅ 10
4
4
0,08 ⋅ 10
4
0,25 ⋅ 10
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
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