1. Orientation of Load Cells
3 Point System
4 Point System

2. Types of Load Points
There are three models of load cells that work in concert to help provide a bind free weighing system.
FIXED: Provides a pivot point that prevents the scale
from moving left or right and allowing a 360 degree
radius.
BUMPER: Works with the FIXED mount to limit the
360 degree rotation, and allow expansion.
Orientation is very important.
SLIDER: Completes the trio and is used to support the remaining vessel leg(s). The SLIDER allows expansion in any direction and limited by the other mount types.
NOTE: There is additional installation information in the load point manuals

3. The Fixed Mounting Assembly
FIXED: Provides a pivot point that prevents the scale from moving left or right and allowing a 360 degree radius.
Limits right, left and forward, back scale movements
Provides a certain amount of vessel checking
A bolt in the front of the load point mount provides lift off protection.
Position load points to protect the cabling from traffic, mechanical pinch points and any possible damage.

4. The Bumper Mounting Assembly
Steel Blocks limit the
movement Left and Right.
Bumper
Designed to allow movement forward and aft to compensate for vessel expansion and contraction.
BUMPER: Works with the FIXED mount to limit the 360 degree rotation, and allow expansion.
Correct orientation for this load point is very important.
The cable end must point directly at or directly away from the FIXED load point.
This acts as a limited check system to vessel movement.
An incorrect mount alignment could allow the vessel
to slip off the load point assemblies.

5. The Slider Mounting Assembly
SLIDER: Completes the trio and is used to support the remaining vessel legs. The SLIDER allows expansion in any direction and is only limited by the FIXED and BUMPER mounts and piping.
The Slider Load point can be orientated in any direction.
Position load points to protect the cabling from traffic, mechanical pinch points and any possible damage.

6. 3 Point System One Fixed Point Load Point One Bumper Load Point
One Slider Load Point

7. 4 Point System One Fixed Point Load Point One Bumper Load Point
Two Slider Load Points

8. RULES OF ORIENTATION Fixed load cell Bumper load cell Slider load cell
No rules of orientation
Bumper load cell
Lengthwise axis must be within 45o towards fixed load cell
Slider load cell

9. ACCEPTABLE ORIENTATION
BUMPER load point must follow the rules of association to the Fixed load point.
FIXED load point can be in any orientation
SLIDER load point can be in any orientation

10. ACCEPTABLE ORIENTATION
Equally spaced at 120 degree around the vessel. The same concerns and
orientation problems and solutions are equally appropriate for a round
vessel with four load points. The difference is the 4 point vessel will be
equally spaced 90 degrees around the vessel.
BUMPER
FIXED
SLIDER

11. ACCEPTABLE ORIENTATION
Equally spaced at 120 degree around the vessel. The orientation makes two locations
crowded, pinch point, or traffic. You can move the bumper mount to an open area and re-
orientate the fixed and slider load point to avoid the problem.
FIXED
BUMPER
SLIDER

12. INCORRECT ORIENTATION
BUMPER
FIXED
>45o
SLIDER
Rotation can allow the vessel to twist off the load points.

13. ACCEPTABLE ORIENTATION
Equally spaced at 90 degrees around the vessel. the same concerns and orientation problems and solutions are equally appropriate for a round or square vessels with four or three load points. The difference is the 4 point vessel will be equally spaced 90 degrees around the vessel.
SLIDER
FIXED
BUMPER
SLIDER

14. ACCEPTABLE ORIENTATION
Equally spaced at 90 degree around the vessel. The orientation makes locations crowded by pinch point, or traffic. You can move the bumper mount to an open area and re-orientate the fixed and slider load points to avoid the problem.
SLIDER
FIXED
BUMPER
SLIDER

15. ACCEPTABLE ORIENTATION
Positioned on the longest side
FIXED
BUMPER
SLIDER
SLIDER
The same concerns and orientation problems and solutions are equally appropriate for a round vessel with four load points. The difference is the 4 point vessel will be equally spaced 90 degrees around the vessel.

16. CORRECT ORIENTATION FIXED BUMPER FIXED BUMPER
For conveyor systems you can use this combination to help stabilize the belt
and flow alignment. You have minimized side motion and allowed expansion
with the length of the scale.

17. INCORRECT ORIENTATION
FIXED
SLIDER
>45o
SLIDER
BUMPER
This would allow to much horizontal movement and could allow the load point to fall off the mount.

18. Acceptable OrientationsF B
Both orientations will work.
Both of these orientation will work and are recommended methods. The top orientation will not work if this is a long rectangular scale with too long of angles. Install the Fixed and Bumper mounts together on the longest side. The bottom example is the preferred. S F B

19. This orientation will not work.B S
Rotation will allow the vessel to fall off the mount. F S

20. Any Questions?
There is additional installation information in the load point manuals. We tried to show several scales with typical load point installations, but we cannot cover all combinations.
Please contact Hardy Instruments Technical Support for any additional question.
ext 1757