Proline Promag L 400, Техническая информация, Страница: 21 / 68

Proline Promag L 400
Hauser 21
Ground cable
Copper wire, at least 6 mm
2
(0.0093 in
2
)
For remote device versions, the ground terminal in the example always refers to the sensor and
not to the transmitter.
The ground cable and ground disks can be ordered from Hauser (→  65).
Pipe with a cathodic protection unit
This connection method is only used if the following two conditions are met:
• Metal pipe without liner or pipe with electrically conductive liner
• Cathodic protection is integrated in the personal protection equipment
1 /
+
–
2 /
2 /
3 /
A0016319
 12 Potential equalization and cathodic protection
1 Isolation transformer power supply
2 Electrically isolated from the pipe
3 Capacitor
Ground cable
Copper wire, at least 6 mm 2 (0.0093 in 2 )
1. Connect the measuring device to the power supply such that it is floating in relation to the
protective ground.
2. Install the sensor in the pipe in a way that provides electrical insulation.
3. Connect the two flanges of the pipe to one another via a ground cable.
4. Guide the shield of the signal lines through a capacitor.
For remote device versions, the ground terminal in the example always refers to the sensor and
not to the transmitter.
The necessary ground cable can be ordered from Hauser .
Terminals Transmitter
• Supply voltage cable: plug-in spring terminals for wire cross-sections
0.5 to 2.5 mm 2 (20 to 14 AWG)
• Signal cable: plug-in spring terminals for wire cross-sections 0.5 to 2.5 mm 2 (20 to 14 AWG)
• Electrode cable: spring terminals for wire cross-sections 0.5 to 2.5 mm
2
(20 to 14 AWG)
• Coil current cable: spring terminals for wire cross-sections 0.5 to 2.5 mm 2 (20 to 14 AWG)
Sensor connection housing
Spring terminals for wire cross-sections0.5 to 2.5 mm 2 (20 to 14 AWG)
Cable entries Cable entry thread
• M20 x 1.5
• Via adapter:
– NPT ½"
– G ½"