TABLE OF CONTENTS
FIGURE NO.
TITLE
Page No.
3-8
Analytical Block Style Load Cell with InCal ...........................................................3-4
3-9
Precision Balance with InCal Mechanism .............................................................3-4
3-10
InCal Weight Cover removed ................................................................................3-5
3-11
Bottom Housing with Load Cell, Weight Arms and Weights removed...................3-5
3-12
InCal Motor removed from its Housing..................................................................3-6
3-13
Screws securing Weight Arm assembly ................................................................3-6
3-14
Proper manner to grasp Load Cell when removing Weight Arm assembly...........3-7
3-15
Cable connects to Position Sensor Board.............................................................3-7
3-16
Access the 3 screws to release Precision balance Load Cell from top center ......3-7
3-17
Service Fixture, screws and washers for 150g to 310g Precision balances .........3-8
3-18
Service Fixture, screws and washers for 510g to 4100g Precision balances .......3-8
3-19
Precision Load Cell top .........................................................................................3-8
3-20
Precision Load Cell bottom ...................................................................................3-8
3-21
Precision Load Cell (150g to 310g) top, with Service Fixture attached.................3-9
3-22
Service Fixture for 510g to 4100g Precision Load Cell, attached to Hanger.........3-9
3-23 Bent
Flexure ..........................................................................................................3-9
3-24
Position Sensor Board.........................................................................................3-10
3-25
Contact Board with ribbon cable .........................................................................3-10
3-26
Fine wires connected to the Contact Board, and affixed to Ratio Beam .............3-10
3-27
Contact Board taped to Ratio Beam after removal from frame ...........................3-11
3-28 Hanger ................................................................................................................3-10
3-29
Two screws secure Magnet Half .........................................................................3-11
3-30
Sideways Motion Stop Plate................................................................................3-11
3-31
Ratio Beam clearing stop on Up/Down Stop Screw as it is lifted out ..................3-12
3-32
Magnets must be clean .......................................................................................3-12
3-33
Position Sensor Board.........................................................................................3-13
3-34
Adjust position of Sensor Board until
Err8.X
does not appear ............................3-13
3-35
Position Sensor Board.........................................................................................3-14
3-36
Installing Ratio Beam, clearing the Up/down Stop Screw ...................................3-15
3-37
Precision Load Cell (150g to 310g) top, with Service Fixture attached...............3-15
3-38
Service Fixture for 510g to 4100g Precision Load Cell, attached to Hanger.......3-15
3-39
Sideways Motion Stop Plate................................................................................3-16
3-40
Two screws secure Magnet Half .........................................................................3-16
3-41 Contact
Board .....................................................................................................3-16
3-42
Solder points on Position Sensor Board..............................................................3-16
3-43
Precision Load Cell top .......................................................................................3-17
3-44
Precision Load Cell bottom .................................................................................3-17
3-45
Ratio Beam Flexures and Vertical Flexure..........................................................3-17
3-46
Insert the 3 screws to secure Precision Load Cell in Bottom Housing ................3-17
3-47
When Position Sensor Board shows normal weight, tighten its screws ..............3-18
3-48
Analytical Balance with InCal Mechanism...........................................................3-19
3-49
InCal Weight Covers removed ............................................................................3-19
3-50
Bottom Housing with Load Cell, Weight Arms and Weights removed.................3-20
3-51
InCal Motor removed from its assembly..............................................................3-20
3-52
InCal Motor Cam in correct position for reassembly ...........................................3-20
3-53
Cable connects to the Position Sensor Board.....................................................3-21
3-54
On Analytical balances, the 3 screws securing Load Cell are on bottom............3-21
3-55
Service Fixture, screws and shims for Analytical balances.................................3-22
3-56
Bottom Mounting Plate and Flexure Arms, Analytical balance’s Load Cell.........3-22
3-57
Top Mounting Plate and Flexure Arms, Analytical balance’s Load Cell ..............3-22
Pioneer™ Balances Service Manual
iv
Ohaus Corporation www.ohaus.com
