i
IM 01C25T01-01E
CONTENTS
FD No. IM 01C25T01-01E
3rd Edition: Oct. 2004 (YK)
All Rights Reserved, Copyright © 2004, Yokogawa Electric Corporation
CONTENTS
1.
INTRODUCTION .......................................................................................... 1-1
Regarding This Manual ................................................................................. 1-1
1.1
Safe Use of This Product .................................................................... 1-2
1.2
Warranty .............................................................................................. 1-2
1.3
ATEX Documentation .......................................................................... 1-3
1.4
Matching of Communicator DD and Instrument DD ........................... 1-4
2.
CONDITIONS OF COMMUNICATION LINE ............................................... 2-1
2.1
Interconnection Between DPharp and the HART Communicator ...... 2-1
2.2
Communication Line Requirements .................................................... 2-1
2.3
Power Supply Voltage and Load Resistance ..................................... 2-1
3.
OPERATION ................................................................................................ 3-1
3.1
Basic Operation of the 275 HART Communicator ............................. 3-1
3.1.1
Keys and Functions ...................................................................... 3-1
3.1.2
Display .......................................................................................... 3-2
3.1.3
Calling Up Menu Addresses ........................................................ 3-2
3.1.4
Entering, Setting, and Sending Data ........................................... 3-3
3.2
Parameter Usage and Selection ......................................................... 3-4
3.3
Menu Tree ........................................................................................... 3-5
3.4
Basic Setup ......................................................................................... 3-6
3.4.1
Tag and Device Information ......................................................... 3-6
3.4.2
Unit ............................................................................................... 3-6
3.4.3
Range Change ............................................................................. 3-7
(1) Keypad input ................................................................................ 3-7
(2) Apply values ................................................................................. 3-8
3.4.4
Output Mode ................................................................................. 3-9
3.4.5
Damping Time Constant Setup .................................................... 3-9
3.4.6
Output Signal Low Cut Mode Setup .......................................... 3-10
3.4.7
Impulse Line Connection Orientation Setup .............................. 3-10
3.5
Detailed Setup ................................................................................... 3-11
3.5.1
Bi-directional Flow Measurement ............................................... 3-11
3.5.2
Integral Indicator Display Mode ................................................. 3-11
3.5.3
Integral Indicator Scale Setup .................................................... 3-12
3.5.4
Unit for Displayed Temperature ................................................. 3-14
3.5.5
Unit for Displayed Static Pressure ............................................. 3-14
3.5.6
Test Output ................................................................................. 3-15
3.5.7
Sensor Trim ................................................................................ 3-16
(1) Zero Trim .................................................................................... 3-16
(2) Full Sensor Trim ......................................................................... 3-17
a. Auto Sensor Trim .................................................................... 3-17
b. Manual Sensor Trim ............................................................... 3-17
(3) Sensor Trim for Static Pressure ................................................. 3-18
(4) Reset Trim Adjustment to Factory Setting ................................. 3-18
3.5.8
Trim Analog Output .................................................................... 3-18
3.5.9
Burst Mode ................................................................................. 3-20
3.5.10 Multidrop Mode ........................................................................... 3-21
3.5.11 External Switch Mode ................................................................ 3-22
