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Wiring the console, Intrinsically safe wiring – Franklin Fueling Systems Colibri CL6 Installation Guide User Manual

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5

Wiring the Console

Intrinsically Safe Wiring

Non-intrinsically safe wiring cannot be run in the

same conduit as intrinsically safe wiring.

Probe Wiring

The probe wiring is intrinsically safe and kept separate 

from all other wiring. Conduit must only enter the console 

enclosure through the designated knockouts. Installation 

may require the conduit to enter on top or bottom. Do not 

loose the conduit plugs and make sure any openings are 

covered by the plugs. 

Probe Terminals

Figure 3: Probe Wiring

Attach the probe wiring in order as shown on the label 
below.

Probe Input Specifications

Number of Channels: 6
Safety Rating:

Class I, Division 1, Group D, [Ex ia] IIA

Entity Parameters

  Uo = 28.35 V

  Io = 157.5 mA

  Co = 1.04 uF

  Lo = 1.4 mH

  Po = 1.1 W

Terms defined

Term

Definition

Uo

Maximum Output Voltage

Io

Maximum Output Current

Po

Maximum Output Power

Co

Maximum External Capacitance

Lo

Maximum External Inductance

Cables Required for Liquid Level Probes

Use cables and wires compliant with national and local 

codes to insure reliable communication between the 

console and probes. To ensure reliable communication 

between a console and probes, FFS recommends using 

the types of cable shown below up to a recommended 

length of:

All cable to be shielded twisted pair, 22AWG or greater 

and oil / water resistant.

Distance

feet (m)

Capacitance

(pF)

per foot

Inductance

(µH)

per foot

Belden Cable

500 (152)

<100

<0.2

87760

87761*

1000 (305)

<60

<0.2

88760

8760

8770

1500 (457)

<20

<0.3

89182*

Note: An asterisk (*) indicates cables that may be ordered 

from FFS.