Siemens SITRANS P Bedienungsanleitung PDF herunterladen (Seite 193)

UMSITRAPDS3-1 Model Designations and Specifications

November 2010

9-35

9.7 ACCESSORIES

The following table lists some of the available accessories. Additional information about transmitter

accessories can be found in Siemens publication Field Instruments for Process Automation, Catalog FI01.

TABLE 9-19 Accessories

MODEL 7MF...

DESCRIPTION

4433,

4533

4033,

4233,

4333

4633,

4812

PART NUMBER

Block & Bleed Valve N Y N 7MF9011-4FA

Three-Valve Manifold, 316 SS Y N N 7MF9411-5BA-Z + K36

External Transient Suppressor Y Y Y 16346-9112

General Purpose Power Supply, 24 Vdc, 2A Y Y Y 15124-1

Field Mounted Power Supply, 28 Vdc, 125 mA Y Y Y 16055-299

PDM Single Tag Version (Software) Y Y Y TGX:PDM3HX060YA5

USB HART Modem Y Y Y 7MF4997-1DB

Y = For use with transmitter model in table column head; N = not for use.

9.8 NETWORK TOPOLOGY

Point-to-Point

Transmitter Quantity...............................1

Network Signal and Connection .............Analog 4-20 mA, single current loop, see Figures 4-6, 4-

7, and 4-8

Network Resistance ................................See Section 4.3.5

Multi-Drop

Transmitter Quantity...............................1-15

Network Signal and Connection .............Digital, parallel connected, see Figure 4-9

Network Resistance ................................See Section 4.3.5

9.8.1 Two-Wire Cable

Type .....................................................................Twisted single-pair, shielded, copper

Conductor Size for Network Length

Less than 5000 feet (1524 m) ........................24 AWG (0.23 mm

) minimum

More than 5000 feet (1524 m).......................20 AWG (0.56 mm

) minimum, 16 AWG (1.3 mm

)

maximum

Cable Capacitance................................................Refer to Section 4.3.6

Recommendation .................................................Belden 8641, 24 AWG (0.23 mm

)

Belden 8762, 20 AWG (0.56 mm

)

Length, Maximum................................................Refer to Section 4.3.6

1 2 ... 188 189 190 191 192 193 194 195 196 197 198 ... 221 222

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