Proline Promag P 100
Endress+Hauser 29
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
A0016319
17 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.
The necessary ground cable can be ordered from Endress+Hauser .
Terminals
Transmitter
Spring terminals for wire cross-sections0.5 to 2.5 mm
2
(20 to 14 AWG)
Cable entries
• Cable gland: M20 × 1.5 with cable 6 to 12 mm (0.24 to 0.47 in)
• Thread for cable entry:
– NPT ½"
– G ½"
– M20
Cable specification Permitted temperature range
• –40 °C (–40 °F) to +80 °C (+176 °F)
• Minimum requirement: cable temperature range ≥ ambient temperature +20 K
Power supply cable
Standard installation cable is sufficient.
Signal cable
Current output
For 4-20 mA HART: Shielded cable recommended. Observe grounding concept of the plant.
Pulse/frequency/switch output
Standard installation cable is sufficient.
To Next Page
Loading...
