• Conveyor Design Requirements

• Principles of In-Motion Weighing

• Mechanical Installation

• Belt-Way Integrator Features

• Networking / Data Collection Options

The first Choice of the American Aggregate Producer

C D i R i tConveyor Design RequirementsA id Hi h S dAvoid High Speed

Use Well Balanced (Concentric) Idlers to Minimize Vibration

“String-Line” Idlers

Conveyor Should Not Exceed 1000 ft. in Length

Belt Speed Should Not Exceed 300 FPM on Belts <25’ in LengthBelt Speed Should Not Exceed 300 FPM on Belts <25 in Length

Conveyor Should be of a Rigid Design and Free of Vibration

Belt Tension Must Remain Consistent.

E t B lt M t b i C t t ith Idl t ll TiEmpty Belt Must be in Contact with Idler at all Times

Belt Must Track in the Center of Idlers (Both Empty and Full)

C D i R i tConveyor Design RequirementsSh lt B lt f th F f Wi d d R iShelter Belt from the Force of Wind and Rain

Maximum Idler Troughing Angle - 35%

Conveyor Angle Must Not Exceed Material Angle of Slide

Conveyor Loading Must be Uniform & Away from Weigh BridgeConveyor Loading Must be Uniform & Away from Weigh-Bridge

Impact Idlers Recommended at Feed Location to Prevent Deflection of Belt

Avoid Material Build-Up on Belt

Avoid Vertical Curves on the ConveyorAvoid Vertical Curves on the Conveyor

Where Scale Idler is Located Within 25’ of the Head Pulley, Position the Carry Rolls a Minimum of 1/2” Above the Crown of the Head y

Pulley

Idler AlignmentIdler Alignment

Scale PlacementScale Placement

Scale Placement on ConveyorScale Placement on Conveyor

Scale Application DataScale Application Data

Belt Load (lb / ft) = Maximum Rate (TPH x 2000 (lbs / ton)Belt Speed (ft / min) x 60 (min / hr)( ) ( )

Net Load Cell Force (lbs) = Belt Load (lb / ft) x Idler Center Distance (ft)

Model 45 weight range 15 lb. - 90 lb.Model 100 weight range 40 lb. - 250 lb.Model 200 weight range 80 lb. - 500 lb.M d l 500 i ht 250 lb 1 250 lbModel 500 weight range 250 lb. - 1,250 lb.Model 1000 weight range 500 lb. - 2,500 lb.

D d L d (B lti W i ht Idl S i ) + Idl W i htDead Load = (Belting Weight x Idler Spacing) + Idler Weight

Gross Load Cell Force = Net Load Cell Force + Dead Load

Belt Speed (FPM) = ((Conveyor Length x 2) / Seconds per Revolution) x 60))

Belt LoadingBelt Loading

00Uneven Load

00Even Load

00Empty Belt

Belt-WayBelt WayConveyor Belt Scale

Modular System

Low Cost Design

Fits any Width Conveyor

Universal Compatibility of ComponentsUniversal Compatibility of Components

Minimal Cost for Redundant Parts

Minimal Down Time for Repairs

Mechanical InstallationMechanical Installation

Attach Load Cell Assemblies to Your Existing Idler

Mechanical InstallationSlide Scale Support Pipes Through Load Cell Assemblies

Mechanical InstallationSlide Scale Support Pipes Through Load Cell AssembliesUse Leveling Plates as Template for Mounting Holes

Mechanical InstallationUse Leveling Bolts to Adjust Height of Scale Idler

Mechanical InstallationUse Leveling Bolts to Adjust Height of Scale Idler

Mechanical InstallationAnchor Scale Support Pipes to Conveyor Frame with U-Bolts

Mechanical InstallationAnchor Scale Support Pipes to Conveyor Frame with U Bolts

Patented Self Aligning Weigh Frame

Patented Self Aligning Weigh FrameF f t i l t f d di tl t th l d ll ( thForce of material transferred directly to the load cells ( the

weighing instrument). No mechanical levers, torsion tubes, or pivot points, which adversely affect scale accuracy and repeatability.

Scale Frame is free of mechanical binding and rigidity found in all other designs Rigidity in the scale frame produces non linearity

The load cell assembly should only touch the

top of the pipe other designs. Rigidity in the scale frame produces non-linearity.

Floating Frame Design reads the true weight of material, but is isolated, in large part, from mechanical “noise” and vibration of the conveyor.

top of the pipe.

The load cell assembly should not touch theshould not touch the

sides of the pipe.

Incorrect Installation

Pi i i li dPipe is misaligned.

U-Bolts should be loosened and pipeloosened and pipe should be shifted to the center of the oval hangarshangars.

NEMA 4XE lEnclosure

Vacuum Fluorescent Display

EMI Resistant Coating

Auto Zero

Internal Data Logger

RS-232 Interface

Connect to PC or Modem

Independent Master Total

Maximum 92,000,000 Tons

Initial CalibrationS ( )Set Maximum Weight Range - Based on Expected Rate (tph)

Press SET ZERO key with Belt Running Empty

Records Tare Weight Subtracted During Normal Operation

Enter Test Weight Value

Press CHECK SPAN with Test Weights Installed and Belt Running

Routine CalibrationRoutine Calibration

Press SET ZERO key with Belt Running Empty

Press CHECK SPAN with Test Weights Installed and Belt RunningPress CHECK SPAN with Test Weights Installed and Belt Running

Belt-Way NETWORKInterface all Scale Controllers Using Coaxial Cable

Belt Way NETWORK

Consolidate and Monitor Data from all Scales using the Belt-Way Remote Display

Connect the Belt-Way Remote Display directly to a Compact Flash Recorder or P.C.

RecapCompany Focus - Conveyor Belt Scales

Modular DesignFits Any Width ConveyorEasy Low Cost InstallationSelf Aligning “Floating Frame” DesignSelf Aligning Floating-Frame Design0Direct Force of Material on Weighing Instrument

aSignal to Noise Ratio is Enhanced by Elimination of Mechanical Interference0Enhances Accuracy and Repeatabilityy p y

aNo Mechanical “Binding”0Holds Calibration

Universal Compatibility of Components0Low Parts Cost0Minimal Down-Time for Replacement

State of the Art ElectronicsState-of-the-Art ElectronicsEasy to Read Vacuum Fluorescent DisplayNEMA 4X EnclosureEMI ProtectionElectrostatic Discharge Protection

One Belt Way Rock Falls, IL 61071 USA