Quickstart EN Instruction Manual

ELECTRICAL CONNECTIONS 3
39
IFC 300
www.krohne.com08/2010 - 4000070303 - QS IFC 300 R06 en
3.6 Preparing and connecting the signal and field current cables (only
TIDALFLUX)
3.6.1 Cable lengths
Interface cable
Interface cableInterface cable
Interface cable: maximum length is 600 m / 1968 ft.
Type B (BTS) signal cable
Type B (BTS) signal cableType B (BTS) signal cable
Type B (BTS) signal cable: maximum length is 600 m / 1968 ft.
Type A (DS) signal cable
Type A (DS) signal cableType A (DS) signal cable
Type A (DS) signal cable: maximum length depends on the conductivity of the fluid:
Field current cable
Field current cableField current cable
Field current cable: The cross section of the cable determines the maximum length:
DANGER!
Cables may only be connected when the power is switched off.
DANGER!
The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
CAUTION!
The maximum allowed distance between the flow sensor and the converter is determined by the
shortest cable length.
Electrical conductivity Maximum length
[µS/cm] [m] [ft]
50 120 394
100 200 656
200 400 1312
≥400 600 1968
Cross section Maximum length
[mm
2
]
[AWG] [m] [ft]
2 x 0.75 2 x 18 150 492
2 x 1.5 2 x 14 300 984
2 x 2.5 2 x 12 600 1968