Endress+Hauser Proline Promag W 800 - Electrical connection; Electrical safety; Connecting requirements

Electrical connection Proline Promag W 800
44 Endress+Hauser
7 Electrical connection
NOTICE
In the device versions with a mains connection (order code for "Power supply" option
K or S), the device does not have an internal circuit breaker to disconnect from the
power supply network.
‣
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 Electrical safety
In accordance with applicable national regulations.
7.2 Connecting requirements
7.2.1 Requirements for connecting cable
The connecting cables provided by the customer must fulfill the following requirements.
Permitted temperature range
• The installation guidelines that apply in the country of installation must be observed.
• The cables must be suitable for the minimum and maximum temperatures to be
expected.
Power supply cable (incl. conductor for the inner ground terminal)
Standard installation cable is sufficient.
Signal cable
Pulse /switch output
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 –25 to +70 °C (–13 to +158 °F)
Coil current cable
Standard cable
3 ×0.75 mm
2
(18 AWG) with common, braided copper shield
( ~9 mm (0.35 in))
Conductor resistance ≤37 Ω/km (0.011 Ω/ft)