Electrical connection Deltabar PMD75B HART
24 Endress+Hauser
6 Electrical connection
6.1 Connection conditions
6.1.1 Potential equalization
The protective ground on the device must not be connected. When using in hazardous
areas, the device must be included in the potential equalization of the plant.
A0038024
1 Ground terminal for connecting the potential matching line
L
WARNING
Risk of explosion!
‣
Please refer to the separate documentation on applications in hazardous areas for the
safety instructions.
Optimize electromagnetic compatibility
• Keep the potential matching line as short as possible
• Maintain a cross-section of at least 2.5 mm
2
(14 AWG)
6.2 Connecting the measuring device
A0043806
1 Connection compartment
6.2.1 Supply voltage
• Ex d, Ex e, non-Ex: supply voltage: 10.5 to 35 VDC
• Ex i: supply voltage: 10.5 to 30 VDC
6.2.2 Cable specification
Protective ground or grounding of the cable shield: rated cross-section > 1 mm
2
(17 AWG)
Rated cross-section of 0.5 mm
2
(20 AWG) to 2.5 mm
2
(13 AWG)
6.2.3 Terminals
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm
2
(20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm
2
(20 to 12 AWG)
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