Part 2, Section 11: IPO-11: Vehicle Scales
Application
Electronic or mechanical permanent or portable vehicle scales
Equipment
Inspector's weight kit, local standards in sufficient number and capacity, and material for strain tests.
Use
Device is approved for trade use (NoA, Act Section 8)
Device is suitable for the actual use (STP-1)
Device has been initially inspected (if applicable) and bears the initial verification marks (R.29)
Device is sealed (NoA, STP-4)
Visual Examination — Installation and Location (STP-7)
Device is installed in accordance with restrictions and conditions listed in the notice of approval and in accordance with manufacturer's instructions
Device is adequately supported and properly levelled
Device indicating and load receiving elements are positioned for customer's view (if applicable), or a secondary indicator is provided
Load receiving element can be observed from indicator's normal reading position
Installation provide access to understructure of main elements (Pit entrance)
Installation of load cells, levers are adequate
Clearance around load receptor
Device is adequately protected
Approach and departure ends meet requirements
Local standards and test equipment can be brought to the device and used for inspection
Visual Examination — Marking (STP-3)
Device is marked with the required information
Marking is located as required
Marking is permanent (if applicable)
Marking plate is permanently attached to the device
Visual Examination — Indicating element (STP-5)
(Electronic)
Display Test (Segment)
Indicated and recorded values are adequately defined
Defining words and symbols for annunciators (Tare Entered, Gross and Net Weight, Center-of-Zero) are readable
(Mechanical)
Scale marks, pointers and poise are in good condition
Defining words and symbols are readable
Zero setting material is enclosed and secured
Balancing ball is in good condition and secured in place
Poise adjusting material is enclosed and held firmly in position
Visual Examination — Recording Element (Printer) (STP-6)
Device prints the required values
Printed values are adequately defined
Device Configuration (Electronic)
Device configured as prescribed by the NOA (STP-2)
Zero Setting Mechanism Range ( 4% of Max or more) (STP-8)
Initial Zero Setting Mechanism Range (20% of Max or more) Footnote 1
AZTM Maximum Range (0.6 e)
Manual Entries of Gross Weights (STP-9) Footnote 1
Sleep Mode Test (STP-10) Footnote 1
Tare (Platter, Keyboard, and Pre-programmed Tare Entry) (STP-11)
Free Floating Weight Signal (STP-12)
Performance
Load Discrimination Test (Near Zero) (STP-14)
Increasing Test (Strain Test) (STP-13)
Eccentricity Test (STP-15)
Load Discrimination (Max) (STP-14)
Agreement of Registration (STP-17)
Display Blanking Tests (Zero, Tare) (STP-18)
Decreasing and Return-to-Zero Test (STP-13)
Repeatability Test (STP-16)
Motion Detection Test (STP-19)
Mathematical Concordance of Tare, Net and Gross Weight (STP-21)
Disturbance Test (Electromagnetic Interference and Radio Frequency Interference, Vibrations). (STP-23)
Weigh-in/Weigh-out Systems (STP-24)
Multi-deck Weighing Systems (STP-26)
Unattended Vehicle Scales (STP-25)
Revision
Rev.1 added device types 9.30 & 9.40 (Nov 2004)
Footnotes
- Footnote 1
-
Test performed at the initial inspection only.