Electrical connection
Proline Promag W 400 HART
38
Hauser
7
Electrical connection
NOTICE
The measuring device does not have an internal circuit breaker.
‣
For this reason, assign the measuring device a switch or power-circuit breaker so that
the power supply line can be easily disconnected from the mains.
‣
Although the measuring device is equipped with a fuse, additional overcurrent
protection (maximum 16 A) should be integrated into the system installation.
7.1
Connection conditions
7.1.1
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
Minimum requirement: cable temperature range ≥ ambient tempe20 K
Power supply cable
Standard installation cable is sufficient.
Signal cable
Current output 0/4 to 20 mA
Standard installation cable is sufficient.
Current output 4 to 20 mA HART
A shielded cable is 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 (
~
9.5 mm
(0.37 in)) and individual shielded cores
Cable for empty pipe
detection (EPD)
4 ×0.38 mm
2
(20 AWG) with common, braided copper shield (
~
9.5 mm
(0.37 in)) and individual shielded cores
Conductor resistance
≤50 Ω/km (0.015 Ω/ft)
Capacitance: core/shield
≤420 pF/m (128 pF/ft)
Operating temperature
–20 to +80 °C (–68 to +176 °F)
Содержание Proline Promag W 400 HART
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