User`s manual
Accurate Technology ProScale  Page 4 of 48 
Table of Contents 
SECTION 1  GENERAL INFORMATION............................................... 6 
INTRODUCTION ....................................................................................... 6 
WHAT THIS MANUAL INCLUDES ................................................................. 6 
PRODUCT SPECIFICATIONS....................................................................... 7 
PROSCALE TERMINOLOGY ....................................................................... 8 
Scales .............................................................................................. 8 
Absolute ........................................................................................ 8 
Incremental.................................................................................... 9 
Readheads ......................................................................................10 
Absolute .......................................................................................10 
Incremental...................................................................................10 
DISPLAYS .............................................................................................11 
Measurement Compensation Option..................................................11 
Surface Mount LCD Displays.............................................................12 
Basic Display ................................................................................12 
General Purpose, Battery ..............................................................12 
General Purpose, 24VDC ..............................................................12 
General Purpose, Wireless ............................................................12 
Panel Mount LCD Displays................................................................13 
Panel Mount, Basic, Battery...........................................................13 
Panel Mount, General Purpose, Battery..........................................13 
Panel Mount, Basic, 24VDC...........................................................13 
Panel Mount, General Purpose, 24VDC..........................................14 
Other Displays..................................................................................15 
SECTION 2  MODEL 150 & MODEL 250 .............................................16 
PROSCALE MODEL 150 ..........................................................................16 
Scale & ReadHead Installation ..........................................................16 
PROSCALE MODEL 250 ..........................................................................19 
Scale & ReadHead Installation ..........................................................19 
DISPLAY INSTALLATION ...........................................................................22 
Surface Mount Display ......................................................................22 
Panel Mount Display.........................................................................22 
SECTION 3   CALIBRATION/MAINTENANCE .....................................23 
CALIBRATION ........................................................................................23 
COMPENSATION CALIBRATION..................................................................24 
MAINTENANCE.......................................................................................25 
Changing the Batteries......................................................................26 










