Connecting The Device; Supply Voltage; Terminals; Cable Specification - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Electrical connection
20
6.3

Connecting the device

1 Connection compartment cover
Housing thread
The thread of the electronics and connection compartment is coated with lubricant
varnish.
Avoid additional lubrication.
6.3.1

Supply voltage

• U = 10.5 to 35 V (Ex d, Ex e, non-Ex)
DC
• U = 10.5 to 30 V (Ex i)
DC
• Rated current: 4 to 20 mA HART
• The power unit must be tested to ensure it meets safety requirements (e.g. PELV,
SELV, Class 2).
• Comply with the following according to IEC/EN61010-1: provide a suitable circuit
breaker for the device.
6.3.2

Terminals

• Supply voltage and internal ground terminal: 0.5 to 2.5 mm
• External ground terminal: 0.5 to 4 mm
6.3.3

Cable specification

• The cable outer diameter depends on the cable entry used
• Cable outer diameter
• Plastic: ⌀5 to 10 mm (0.2 to 0.38 in)
• Nickel-plated brass: ⌀7 to 10.5 mm (0.28 to 0.41 in)
• Stainless steel: ⌀7 to 12 mm (0.28 to 0.47 in)
Liquiphant FTL51B HART
1
2 (20 to 14 AWG)
2 (20 to 12 AWG)
A0046355
Endress+Hauser