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Orientation of Load Cells

•3 Point System•4 Point System

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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 scalefrom moving left or right and allowing a 360 degreeradius.

• 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

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The Fixed MountingAssembly

Fixed

• 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.

XX

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Assembly

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.

Bumper

Steel Blocks limit the movement Left and Right.

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The Slider Mounting Assembly

Slider

• 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.

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3 Point System

• One Fixed Point Load Point• One Bumper Load Point• One Slider Load Point

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4 Point System

• One Fixed Point Load Point• One Bumper Load Point• Two Slider Load Points

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RULES OF ORIENTATION

• Fixed load cell– No rules of orientation

• Bumper load cell– Lengthwise axis must be within 45o

towards fixed load cell

• Slider load cell– No rules of orientation

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FIXED load point can be in any orientation

BUMPER load point must follow the rules of association to the Fixed load point.

SLIDER load point can be in any orientation

ACCEPTABLE ORIENTATION

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ACCEPTABLE ORIENTATION

FIXEDBUMPER

SLIDER

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

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ACCEPTABLE ORIENTATION

FIXED BUMPER

SLIDER

Equally spaced at 120 degree around the vessel. The orientation makes two locationscrowded, 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.

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FIXEDBUMPER

SLIDER

>45o

INCORRECT ORIENTATION

Rotation can allow the vessel to twist off the load points.

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ACCEPTABLE ORIENTATIONEqually 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.

FIXED

BUMPER

SLIDER

SLIDER

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ACCEPTABLE ORIENTATIONEqually 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.

FIXEDBUMPER

SLIDER

SLIDER

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FIXED BUMPER

SLIDER SLIDER

ACCEPTABLE ORIENTATIONPositioned on the longest side

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.

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FIXED BUMPER

FIXED BUMPER

CORRECT ORIENTATION

For conveyor systems you can use this combination to help stabilize the belt and flow alignment. You have minimized side motion and allowed expansionwith the length of the scale.

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FIXED

BUMPER

SLIDER

SLIDER

>45o

INCORRECT ORIENTATION

This would allow to much horizontal movement and could allow the load point to fall off the mount.

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Acceptable OrientationsS

SF

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

S

F

B

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This orientation will not work.

S

S

F

B

Rotation will allow the vessel to fall off the mount.

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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.858-278-2900 ext 1757