Endress+Hauser Proline Promag W 800 - Page 56

Electrical connection Proline Promag W 800
56 Endress+Hauser
DN 300≤ DN 350≥
PE = P P=
P M
A0042089
1. Connect both sensor flanges to the pipe flange via a ground cable and ground them.
2. Attach the connection housing of the transmitter or sensor to ground potential by
means of the ground terminal provided for this purpose.
3. For DN ≤ 300 (12"): Mount the ground cable directly on the conductive flange coating
of the sensor with the flange screws.
4. For DN ≥ 350 (14"): Mount the ground cable directly on the metal transport bracket.
Observe the screw tightening torques: see the Brief Operating Instructions for the
sensor.
Plastic pipe or pipe with insulating liner
• Potential equalization is via the ground terminal and ground disks.
• The medium is set to ground potential.
Starting conditions:
• The pipe has an insulating effect.
• Low-impedance medium grounding close to the sensor is not guaranteed.
• Equalizing currents through the medium cannot be ruled out.
PE = P P=
P M
A0044856
1. Connect the ground disks to the ground terminal of the transmitter or sensor
connection housing via the ground cable.
2. Connect the connection to ground potential.
Connection example with the potential of medium not equal to protective ground
In these cases, the medium potential can differ from the potential of the device.