Rosemount 848T Manual do Utilizador descarregar pdf (Página 6)

January 2015

Quick Start Guide

Figure 7. Wiring Connections

Sensor wiring and power supply

 Compatible with eight independently configurable channels including

combinations of 2- and 3-wire RTDs, thermocouples, mV, ohm and mA

sensors.

 All sensor and power terminals are rated to 42.4 Vdc.

 FOUNDATION fieldbus network powered with a terminal voltage of 9.0 to 32.0

Vdc and 22 mA maximum current draw.

 For best network performance twisted, shielded pair cabling should be used.

Proper gage wire should be selected to maintain the 9.0 Vdc minimum.

Figure 8. Sensor Wiring Diagram

1. Emerson Process Management provides 4-wire sensors for all single-element RTDs. Use these RTDs in 3-wire

configurations by clipping the fourth lead or leaving it disconnected and insulated with electrical tape.

2. The transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop.

The wiring of 3-wire RTDs for this unit is different than some earlier 848T models.

Pay careful attention to the wiring diagram on the label, especially if this unit is

replacing an older unit.

Cable gland Conduit entries

A. Sensor 1

B. Sensor 2

C. Sensor 3

D. Sensor 4

E. Sensor 5

F. Sensor 6

G. Sensor 7

H. Sensor 8

I. Power/Signal

J. Cover Screw

A. Sensor 1 and 2

B. Sensor 3 and 4

C. Sensor 5 and 6

D. Sensor 7 and 8

E. Power/Signal

F. Cover Screw

11 1 1222 23333

2-wire

RTD and

Ohms

3-wire

RTD and

Ohms

(1)

Thermocouples/

Ohms and

Millivolts

2-Wire RTD with

Compensation

Loop

(2)

1 2 3 4 5 6 7 8 9 10 11 ... 27 28

Comentários a estes Manuais

Sem comentários

Rosemount 848T Manual do Utilizador Página 6

Comentários a estes Manuais