Fluke HART 744 Manuale utente
®
744
Documenting Process Calibrator
HARTMode Users Guide
PN 691292
December 1998
© 1998 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
i
Table of Contents
Title Page
Introduction..................................................................................................................... 1
How to Contact Fluke ..................................................................................................... 2
Connecting to a HART Transmitter ................................................................................ 3
Supported vs. Generic Transmitters............................................................................... 6
Communication Operations............................................................................................ 8
Viewing Process Variables ........................................................................................ 8
Setup Operations....................................................................................................... 8
Basic ..................................................................................................................... 8
Sensor................................................................................................................... 10
Device Identification.............................................................................................. 10
HART Output ........................................................................................................ 11
HART Information................................................................................................. 11
Service Operations .................................................................................................... 12
Abort Softkey ............................................................................................................. 12
Interaction between Analog Mode and HART Mode...................................................... 12
Understanding HART Calibration................................................................................... 13
744 HART Mode Menus for Adjustment......................................................................... 13
744
HART Mode Users Guide
ii
Calibrating a Supported HART Transmitter .................................................................... 15
Loop Test.................................................................................................................... 16
Output Trim................................................................................................................. 17
Sensor Trim................................................................................................................ 17
Cloning a Transmitter...................................................................................................... 19
Index
iii
List of Tables
Table Title Page
1. Supported vs. Non-Supported Instruments............................................................................ 7
744
HART Mode Users Guide
iv
v
List of Figures
Figure Title Page
1. Connecting to a HART Transmitter........................................................................................ 5
2. 744 HART Mode Menu Tree.................................................................................................. 9
3. Block Diagram of a HART Transmitter .................................................................................. 14
744
HART Mode Users Guide
vi
1
Documenting Process Calibrator HART Mode
Introduction
wWarning
To avoid electric shock, read the Safety
Information in the
744 Users Manual
before
you use the Fluke 744 Documenting Process
Calibrator.
With analog transmitters, you must make a hardware
adjustment during calibration. With HART(Highway-
Addressable Remote Transducer) transmitters,
adjustments are by remote command. These adjustments
require the use of a communication tool as well as a
calibrator. The Fluke 744, hereafter called “calibrator,”
provides communication and calibration functions in one
tool.
This manual describes how to use HART mode, which is
active when the calibrator is communicating over its serial
HART interface to a HART transmitter. Refer to the
744 Users Manual
for safety, analog mode operating
instructions, specifications, and other general information.
All of the calibrator functions described in the
744 Users
Manual
are available and can be used with HART
transmitters. The only transmitters addressed in this
manual are HART transmitters.
744
HART Mode Users Guide
2
How to Contact Fluke
To contact Fluke, call:
USA and Canada:
1-888-99-FLUKE (1-888-993-5853)
Europe: +31 402-678-200
Japan: +81-3-3434-0181
Singapore: +65-*-276-6196
Anywhere in the world: +1-425-356-5500
Or visit us on the World Wide Web: www.fluke.com
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