Michell Instruments Easidew PRO, Руководство пользователя

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I.S. Field Display User’s Manual
iv 97321 Issue 2.3, May 2016
1 INTRODUCTION ................................................................................................1
1.1 Operation ......................................................................................................... 1
1.1.1 Controls ....................................................................................................... 2
2 INSTALLATION ..................................................................................................3
2.1 4-20 mA Input ................................................................................................. 3
2.2 System Design for Gas Hazardous Areas ............................................................. 4
2.2.1 Transmitter Loops ......................................................................................... 4
2.2.2 Remote Indication ......................................................................................... 5
2.3 Location ........................................................................................................... 6
2.4 Installation Procedure ....................................................................................... 6
2.5 EMC ................................................................................................................ 7
3 OPERATION ......................................................................................................8
3.1 Con fi guration And Calibration ............................................................................. 8
3.1.1 Summary of Con fi guration Functions .............................................................. 9
3.1.2 Indicator Function: ‘FunC’ ........................................................................... 11
3.1.2.1 ‘
Std
’ Linear (Default) ............................................................................ 12
3.1.3 Resolution: '
rESn
'....................................................................................... 12
3.1.4 Position of the Decimal Point: ‘
dP
’ ............................................................... 12
3.1.5 Re-Range Display or Calibrate Using an External Current Source: ‘
CAL
’ .......... 13
3.1.6 Re-Range Display or Calibrate Using Internal Reference: ‘
SEt
’ ....................... 14
3.1.7 Function of the P Push-Button: ‘
C - - P
’ ........................................................ 14
3.1.8 Tare Function: ‘
tArE
’ .................................................................................. 15
3.1.9 Security Code: ‘
CodE
’ ................................................................................. 15
3.1.10 Reset to Factory Defaults: ‘
rSEt
’ .................................................................. 15
3.1.11 Under and Over-Range ................................................................................ 16
3.2 External Keypad (Optional) .............................................................................. 16
3.3 Alarms (Optional) ............................................................................................ 17
3.3.1 Solid State Output ...................................................................................... 18
3.3.2 Intrinsic Safety............................................................................................ 18
3.3.3 Con fi guration and Adjustment ...................................................................... 19
3.3.4 Alarm Enable: ‘
EnbL
’ .................................................................................. 20
3.3.5 Setpoint Adjustment: ‘
SP1
’ and ‘
SP2
’........................................................... 20
3.3.6 Alarm Function: ‘
Hi.Lo
’ ............................................................................... 21
3.3.7 Alarm Output Status: ‘
no.nC
’ ...................................................................... 21
3.3.8 Hysteresis: '
HStr
' ....................................................................................... 21
3.3.9 Alarm Delay: '
dELA
' ................................................................................... 22
3.3.10 Alarm Silence Time: '
SiL
' ............................................................................ 22
3.3.11 Flash Display when Alarm Occurs: ‘
FLSH
’..................................................... 23
3.3.12 Access Setpoint in Display Mode: '
ACSP
' ...................................................... 23
3.3.13 Adjusting Alarm Setpoints from the Display Mode .......................................... 24
3.4 Display Backlight (Optional) ............................................................................. 25
3.4.1 Loop Powering the Backlight ........................................................................ 25
3.4.2 Separately Powering the Backlight ................................................................ 26
3.5 Pipe-Mounting Kits .......................................................................................... 27
Contents
Safety ................................................................................................................................vi
Toxic Materials .............................................................................................................vi
Repair and Maintenance ...............................................................................................vi
Safety Conformity ........................................................................................................vi
Abbreviations ......................................................................................................................vi
Warnings ............................................................................................................................vi