Liquid Controls IT275N User Manual
Page 2
 
Sponsler, Inc.
IT275N Remote Totalizer & Rate Indicator
pg. 2
DOC#: MN-275N-A
 
 
TABLE OF CONTENTS
PAGE #
SPECIFICATIONS ....................................................................................................................... 3 
 
INTRODUCTION ......................................................................................................................... 4 
General ................................................................................................................................ 4 
Theory of Operation ............................................................................................................. 4 
Calibration ............................................................................................................................ 4 
 
INSTALLATION ........................................................................................................................... 5
Inspection ............................................................................................................................. 5 
Physical ................................................................................................................................ 5 
Electrical ............................................................................................................................... 5 
Signal ................................................................................................................................... 5 
 
CALIBRATION ............................................................................................................................ 6
Sensitivity ............................................................................................................................. 6 
Calibration Factor .............................................................................................................. 6,7 
'0-1' Function ..................................................................................................................... 7,8 
Change of Calibration Engineering Units ........................................................................... 8,9 
Field Correction of Calibration Factor .............................................................................. 9,10 
4-20 mA Analog Output ................................................................................................. 10,11 
 
FUNCTION SELECTION ........................................................................................................... 11
Reset Function ................................................................................................................... 11 
 
MISCELLANEOUS .................................................................................................................... 12
Battery Replacement .......................................................................................................... 12 
 
LIST OF ILLUSTRATIONS
Figure 1 - Mounting PCB ...................................................................................................... 5 
Figure 2 - Input & Analog PCB .............................................................................................. 6 
Figure 3 - Factoring PCB ...................................................................................................... 7 
Figure 4 - Resetting the Display .......................................................................................... 11 
Figure 5 - Board Stack Removal ......................................................................................... 12 
Figure 6 - Dimensional Information ..................................................................................... 13