Endress+Hauser Hart Cerabar PMP71B, Руководство по эксплуатации

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Cerabar PMP71B HART Electrical connection
Hauser 27
6 Electrical connection
6.1 Connection conditions
6.1.1 Potential equalization
The protective ground on the device must not be connected. If necessary, the potential
matching line can be connected to the outer ground terminal of the transmitter before the
device is connected.
1
A0045412
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.
For optimum 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
1
A0043806
1 Connection compartment cover
Housing thread
The thread of the electronics and connection compartment is coated with lubricant
varnish.
Avoid additional lubrication.
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
• Nominal current: 4 to 20 mA HART
The power unit must be tested to ensure it meets safety requirements (e.g. PELV,
SELV, Class 2).