Endress+Hauser Proline Promag W 400 HART, Руководство по эксплуатации

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Proline Promag W 400 HART Electrical connection
Hauser 47
Connection example, standard scenario
Metal, grounded pipe
A0016315
 20 Potential equalization via measuring tube
Connection example in special situations
Unlined and ungrounded metal pipe
This connection method also applies in situations where:
• The customary potential equalization is not used
• Equalizing currents are present
Ground cable Copper wire, at least 6 mm 2 (0.0093 in 2 )
DN 300
≤
DN 350
≥
A0029338
 21 Potential equalization via ground terminal and pipe flanges
1. Connect both sensor flanges to the pipe flange via a ground cable and ground them.
2. If DN ≤ 300 (12"): Mount the ground cable directly on the conductive flange coating
of the sensor with the flange screws.
3. If DN ≥ 350 (14"): Mount the ground cable directly on the metal transport bracket.
Observe screw tightening torques: see the Sensor Brief Operating Instructions.
4. Connect the connection housing of the transmitter or sensor to ground potential by
means of the ground terminal provided for the purpose.
For remote device versions, the ground terminal in the example always refers to the
sensor and not to the transmitter.
Plastic pipe or pipe with insulating liner
This connection method also applies in situations where:
• The customary potential equalization is not used
• Equalizing currents are present
Ground cable Copper wire, at least 6 mm
2
(0.0093 in
2
)