KROHNE IFC 300 Converter Quickstart EN - Manual (Page 20)

3
ELECTRICAL CONNECTIONS
20
IFC 300
www.krohne.com 08/2010 - 4000070303 - QS IFC 300 R06 en
3.4.3 Length of signal cable A
INFORMATION!
For temperatures of the medium above 150
° C / 300 ° F, a special signal cable and a ZD
intermediate socket are necessary. These are available including the changed electrical
connection diagrams.
Measuring sensor Nominal size Min. electrical
conductivity
[µS/cm] Curve for signal
cable A
DN [mm] [inch]
OPTIFLUX 1000 F 10...150 3/8...6 5 A1
OPTIFLUX 2000 F 25...150 1...6 20 A1
200...2000 8...80 20 A2
OPTIFLUX 4000 F 2.5...150 1/10...6 1 A1
200...2000 8...80 1 A2
OPTIFLUX 5000 F 2.5...100 1/10...4 1 A1
150...250 6...10 1 A2
OPTIFLUX 6000 F 2.5...150 1/10...6 1 A1
WATERFLUX 3000 F 25...600 1...24 20 A1
Figure 3-4: Maximum length of signal cable A
1 Maximum length of signal cable A between the measuring sensor and signal converter [m]
2 Maximum length of signal cable A between the measuring sensor and signal converter [ft]
3 Electrical conductivity of the medium being measured [μS/cm]