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Speisewasserleitfähigkeit > 30 µS/cm 30 µS/cm
Zulässiger Betriebsdruck bar 0,5 PS 20 PS > 20 PS > 0,5
Phosphat (PO4) mg/l 10 bis 20 6 bis 15
Kieselsäure (SiO4)*4 mg/l Druckabhängig, siehe Abb. 2 u. 3
Tab. 18
Detaillierte Angaben
EN 12953-10
Zulässige direkte Leitfähigkeit des Kesselwassers in Abhängigkeit vom Druck, Speisewasser-Leitfähigkeit
> 30 μS/cm
2000
4000
6000
Direkte Leitfähigkeit in µS/cm
0 10 20 30 40
Betriebsdruck in bar
7000
Abb. 2 Direkte Leitfähigkeit
Umrechnung:
1 mol/m3= 5,6 °dH
1 °dH = 0,179 mol/m3
1 mval/kg = 2,8 °dH
Empfehlung
Phosphatdosierung einsetzen, obwohl nicht immer
erforderlich.
*4 Falls alle anderen Werte berücksichtigt werden, sind bei der Verwendung von Phosphat höhere PO4-Konzentrationen zu-
lässig. Das gilt z. B. bei ausgeglichener oder koordinierter Phosphatbehandlung (siehe Abschnitt „Konditionierung“).
Wasserbeschaffenheit
Anforderungen an salzhaltiges Kesselspeisewasser (Fortsetzung)
5786216
Bedienung
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