ISA RP74.01 : 1984

1 Purpose and scope
2 Definitions
3 Conveyor design recommendations
    3.1 Conveyor length
    3.2 Maximum angle of inclination
    3.3 Belt speed
    3.4 Troughing angle carrying idlers
    3.5 Idler spacing
    3.6 Takeup
    3.7 Concave/convex curves
    3.8 Conveyor stringers
    3.9 Conveyor vertical supports
    3.10 Support footing
    3.11 Training idlers
    3.12 Weigh idlers
    3.13 Conveyor load point
    3.14 Wind loading
    3.15 Material transition
    3.16 Idler alignment
    3.17 Belt tracking
    3.18 Calibration chain storage
4 Calibration
    4.1 Methods
    4.2 Frequency of alignment, calibration, and
          zero balancing
5 Accuracy
6 Belt weigh scale components
    6.1 Load sensor and reactor
    6.2 Speed measurement system
    6.3 Multiplier
    6.4 Information display
    6.5 Transmission
    6.6 Power supply
    6.7 Enclosure
7 Scale maintenance
    7.1 Cleanliness
    7.2 Alignment
    7.3 Tension adjustment
    7.4 Monitoring accuracy
8 Bibliography
Appendix A - OIML recommendation no. 50, CHAPTER II,
             metrological requirements
Appendix B - Test report

Specifies to furnish design criteria inductive to simplified specifications and to provide recommendations for installation, calibration, and maintenance of continuous-belt, weighbridge-type scales.