Proline Promag L 400 HART
Electrical connection
Hauser
31
7
Electrical connection
7.1
Connection conditions
7.1.1
Required tools
• Torque wrench
• For cable entries: Use corresponding tools
• For housing cover: Phillips head screwdriver PH 2
• Wire stripper
• When using stranded cables: Crimping tool for wire end ferrule
7.1.2
Requirements for connecting cable
The connecting cables provided by the customer must fulfill the following requirements.
Electrical safety
In accordance with applicable federal/national regulations.
Permitted temperature range
• –40
°
C (–40
°
F)...
³
80
°
C (176
°
F)
• Minimum requirement: cable temperature range
³
ambient tempe 20 K
Power supply cable
Standard installation cable is sufficient.
Signal cable
Current output
• For 0-20 mA and 4-20 mA: standard installation cable is sufficient.
• For 4-20 mA HART: Shielded cable recommended. Observe grounding concept of the plant.
Pulse/frequency/switch output
Standard installation cable is sufficient.
Status input
Standard installation cable is sufficient.
Connecting cable for remote version
Electrode cable
Standard cable
3
´
0.38 mm
2
(20 AWG) with common, braided copper shield (
Æ
~
7 mm (0.28")) and
individually shielded cores
Cable for empty pipe
detection (EPD)
4
´
0.38 mm
2
(20 AWG) with common, braided copper shield (
Æ
~
7 mm (0.28")) and
individually shielded cores
Conductor resistance
£
50
W
/km (0.015
W
/ft)
Capacitance: core/shield
£
420 pF/m (128 pF/ft)
Operating temperature
–20 to +80 °C (–68 to +176 °F)