Part 2, Section 5: IPO-5: Platform Scales
Application
Electronic or mechanical bench, platform, floor or dormant scales
Equipment
Inspector's weight kit, local standards of sufficient number and capacity, and material for strain or substitution test (if necessary).
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
Device indicating and load receiving elements are positioned for customer's view (if applicable)
Load receiving element can be observed from indicator's reading position
Clearance around load receptor
Device is properly levelled
Device is adequately protected
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 (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)
Accuracy of Price Computation (STP-20)
Mathematical Concordance of Tare, Net and Gross Weight (STP-21)
Off-Level Test (if applicable) (STP-22) Footnote 1
Disturbance Test (Electromagnetic Interference and Radio Frequency Interference, Vibrations). (STP-23)
Multi-deck Weighing Systems (STP-26)
Beam Scales
Calibration of Counterpoise & Other Trade Weights (STP-29)
Revision
Rev. 1
- add STP-29 reference for Trade Weights.
- remove trade weight examination & calibration procedures from IPO
Footnotes
- Footnote 1
-
Tests performed at the initial inspection only.