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Quick Installation Guide

00825-0100-4825, Rev DB

February 2011

Rosemount 248

STEP 1: CONFIGURE (BENCH CALIBRATION)

The Rosemount 248 communicates using the 375 Field Communicator (communication

requires a loop resistance between 250 and 1100 ohms. Do not operate when power is

below 12Vdc at the transmitter terminal). Refer to the Rosemount 248 Reference Manual

(document number 00809-0100-4825) and the 375 Field Communicator Reference Manual

(http://www.fieldcommunicator.com/suppmanu.htm) for more information.

Connecting a Field Communicator

The Hand-held Communicator Field Device Revision Dev v1, DD v1 is required for complete

functionality.

Figure 1. Connecting a Communicator to a Bench Loop

Verify Transmitter Configuration

To verify operation using a Field Communicator, refer to the Fast Keys below. Refer to the

Rosemount 248 Reference Manual (document number 00809-0100-4825) for more detailed

description.

Function Fast Keys Function Fast Key

Active Calibrator 1, 2, 2, 1, 3 Poll Address 1, 3, 3, 3, 1

Alarm/Saturation 1, 3, 3, 2 Process Temperature 1, 1

AO Alarm Type 1, 3, 3, 2, 1 Process Variables 1, 1

Burst Mode 1, 3, 3, 3, 3 PV Damping 1, 3, 3, 1, 3

Burst Option 1, 3, 3, 3, 4 PV Unit 1, 3, 3, 1, 4

Calibration 1, 2, 2 Range Values 1, 3, 3, 1

Configuration 1, 3 Review 1, 4

D/A Trim 1, 2, 2, 2 Scaled D/A Trim 1, 2, 2, 3

Damping Values 1, 1, 10 Sensor Connection 1, 3, 2, 1, 1

250  R

 1100 

Power Supply

Field Communicator

Rosemount 248 Transmitter

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Emerson ATEX Guía de instalación Pagina 3