TABLE OF CONTENTS
Ranger
™
(Count) 3000 Series Service Manual
ii
Ohaus Corporation www.ohaus.com
CHAPTER 4 TESTING
4.1. Testing .....................................................................................................................4-1
4.1.1 Test Masses Required ......................................................................................4-1
4.2
Operational Test ......................................................................................................4-1
4.3
Segment Display Test ..............................................................................................4-1
4.4. Performance Tests ...................................................................................................4-2
4.4.1 Precision Test ...................................................................................................4-2
4.4.2 Repeatability Test .............................................................................................4-3
4.4.3 Linearity Test ....................................................................................................4-5
4.4.4 Off-Center Load Test ........................................................................................4-5
4.4.5 Adjusting Off Center Load .................................................................................4-6
CHAPTER 5 DRAWINGS AND PARTS LISTS
5-1 Ranger 3000 Scales: Housing & Internal Parts ........................................................5-2
5-2 Ranger Count 3000 Scales: Housing & Internal Parts ..............................................5-4
Appendix A STANDARD CALIBRATION
A.1 Calibration ............................................................................................................... A-1
A.2 Setup and Calibration .............................................................................................. A-2
Appendix B SERVICE CALIBRATION
B.1 Service Menu Structure ........................................................................................... B-1
B.2 Entering the Service Menu ...................................................................................... B-1
B.3 Capacity Menu ........................................................................................................ B-2
B.4 Graduation Menu .................................................................................................... B-2
B.5 Service Span Calibration ......................................................................................... B-2
B.6 Service Linearity Calibration .................................................................................... B-3
B.7 Ramp Menu ............................................................................................................ B-4
B.8 Expand Menu .......................................................................................................... B-4
B.9 End Menu ............................................................................................................... B-4
LIST OF TABLES
TABLE NO.
TITLE
Page No.
1-1
Specifications ......................................................................................................1-2
1-2
Controls Functions, Ranger Count 3000 ..............................................................1-3
1-3
Battery Charge Status Ranger Count 3000 ..........................................................1-4
1-4
Ranger Count 3000 Menu Structure ....................................................................1-5
1-5
Control Functions, Ranger 3000 ..........................................................................1-6
1-6
Battery Charge Status, LCD, Ranger 3000 ..........................................................1-7
1-7
Battery Charge Status, LED, Ranger 3000 ..........................................................1-7
1-8
Ranger 3000 Menu Structure ...............................................................................1-8
2-1
Load Cell Resistance Readings (in Ohms) ..........................................................2-2
2-2
Color Code for Load Cell Wiring ..........................................................................2-2
2-3
Load Cell Output Readings (in mV with 3.3V Excitation) ......................................2-3
2-4
Diagnostic Guide .................................................................................................2-6
3-1
Mounting Bolt Torque Settings .............................................................................3-5
3-2
Overload Stop Gap Settings ................................................................................3-6
4-1
Test Mass Values ................................................................................................4-1
4-2
Repeatability Worksheet ......................................................................................4-4
4-3
Linearity Test Masses ..........................................................................................4-5
