Rosemount 848T Manual do Utilizador descarregar pdf (Página 7)

Quick Installation Guide

00825-0100-4697, Rev DB

September 2011

Rosemount 848T

STEP 2 CONTINUED...

Option 2:

1. Connect sensor wiring shield(s) to the transmitter enclosure (only if the enclosure is

grounded).

2. Ensure the sensor shield(s) is electrically isolated from surrounding fixtures that may be

grounded.

3. Ground F

OUNDATION fieldbus signal wiring shield at the power supply end.

Grounded Thermocouple Inputs

1. Ground sensor wiring shield(s) at the sensor.

2. Ensure that the sensor wiring and F

OUNDATION fieldbus signal wiring shields are

electrically isolated from the transmitter enclosure.

3. Do not connect the F

OUNDATION fieldbus signal wiring shield to the sensor wiring

shield(s).

4. Ground F

OUNDATION fieldbus signal wiring shield at the power supply end.

Analog Device Inputs

1. Ground analog signal wire at the power supply of the analog devices.

2. Ensure that the analog signal wire and the F

OUNDATION fieldbus signal wire shields are

electrically isolated from the transmitter enclosure.

3. Do not connect the analog signal wire shield to the F

OUNDATION fieldbus signal wire

shield.

4. Ground F

OUNDATION fieldbus signal wire shield at the power supply end.

Transmitter Enclosure (optional)

Ground in accordance with local electrical requirements.

Sensor Wires

Power

Supply

Shield ground points

848T

Sensor Wires

Power

Supply

Shield ground points

848T

Power

Supply

848T

Analog

Device

Analog Device

Power Supply

4-20 mA loop

FOUNDATION

fieldbus bus

Shield ground points

1 2 3 4 5 6 7 8 9 10 11 12 ... 19 20

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