SIST ISO/TR 15855:2002
(Main)Copper, lead and zinc sulfide concentrates -- Step-by-step procedure for the testing of static scales
Copper, lead and zinc sulfide concentrates -- Step-by-step procedure for the testing of static scales
This Technical Report outlines simple procedures to check the performance and calibration status of static scales.
The test sequence is intended for routine applications, generating results which can be used to calculate explicit
scale performance parameters (precision, bias and linearity) in accordance with the relevant equations shown in
ISO 12745, Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques.
It is stressed that the basic procedures described below do not replace comprehensive technical manuals
published by National Weights and Measures authorities to comply with legal and other specific requirements.
Concentrés sulfurés de cuivre, de plomb et de zinc -- Procédure pas à pas pour les essais des bascules statiques
Koncentrati bakrovih, cinkovih in svinčevih sulfidov - Postopni postopek za preskušanje statičnih razmerij
General Information
Overview
ISO/TR 15855:2001 is a Technical Report from ISO/TC 183 that provides a step‑by‑step, practical procedure for testing static scales used in the commercial handling of copper, lead and zinc sulfide concentrates. The report outlines simple, routine checks to assess scale performance and calibration status so operators can calculate explicit performance parameters-precision, bias and linearity-in accordance with the equations given in ISO 12745. ISO/TR 15855 is informative in nature and does not replace legal calibration requirements from National Weights and Measures authorities.
Key topics and requirements
- Purpose: Routine scale performance checks for weighbridges, hopper scales, gantry scales and platform scales commonly used for concentrate mass determinations.
- Test frequency: No single mandated interval-recommendations range from none up to multiple checks per consignment; frequency should be agreed between parties based on risk and scale reliability.
- Precision testing:
- Check and adjust zero before and after tests.
- Weighbridge procedure: perform a minimum of four duplicate determinations (data pairs) using the same vehicle to calculate precision.
- Hopper procedure: use a test mass ~5–10× the scale readability and record at least six data pairs from one weighing cycle.
- Note: precision tests do not reveal bias or linearity issues.
- Calibration (bias and linearity) testing:
- Requires certified reference weights (single heavy weight such as 1 t or 2 t, or a set of smaller certified weights).
- Single-weight method: generate at least three calibration points (e.g., zero, ~50% capacity, near-full minus test weight); deviation calculated as observed minus expected reading.
- Multi-weight method: incremental addition/removal of certified weights over the full range, recording observed vs expected readings and calculating deviations.
- Data use: Results are used to compute precision, bias and linearity as per ISO 12745.
Practical applications
- Routine in‑house verification of weighbridge and hopper scale performance at mines, concentrator plants and shipping terminals handling copper, lead and zinc concentrates.
- Pre-loading/discharge checks to reduce commercial disputes over mass determinations.
- Input for quality assurance (QA/QC), operational risk assessments and maintenance scheduling.
- Guidance for calibration laboratories and technicians performing on-site scale checks.
Who should use this
- Mine and concentrator operators
- Weighbridge and hopper scale operators
- QA/QC and metrology teams
- Calibration service providers and inspection bodies
- Commercial/contracting parties negotiating testing frequency and acceptance limits
Related standards
- ISO 12745 - Copper, lead and zinc ores and concentrates: Precision and bias of mass measurement techniques (used for the relevant equations and performance calculations)
- National Weights and Measures authorities’ technical manuals (for legal and statutory calibration requirements)
Keywords: static scales, scale calibration, weighbridges, hopper scales, precision and bias, linearity, ISO 12745, copper lead zinc sulfide concentrates, scale performance testing.
Frequently Asked Questions
SIST ISO/TR 15855:2002 is a technical report published by the Slovenian Institute for Standardization (SIST). Its full title is "Copper, lead and zinc sulfide concentrates -- Step-by-step procedure for the testing of static scales". This standard covers: This Technical Report outlines simple procedures to check the performance and calibration status of static scales. The test sequence is intended for routine applications, generating results which can be used to calculate explicit scale performance parameters (precision, bias and linearity) in accordance with the relevant equations shown in ISO 12745, Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques. It is stressed that the basic procedures described below do not replace comprehensive technical manuals published by National Weights and Measures authorities to comply with legal and other specific requirements.
This Technical Report outlines simple procedures to check the performance and calibration status of static scales. The test sequence is intended for routine applications, generating results which can be used to calculate explicit scale performance parameters (precision, bias and linearity) in accordance with the relevant equations shown in ISO 12745, Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques. It is stressed that the basic procedures described below do not replace comprehensive technical manuals published by National Weights and Measures authorities to comply with legal and other specific requirements.
SIST ISO/TR 15855:2002 is classified under the following ICS (International Classification for Standards) categories: 73.060.99 - Other metalliferous minerals. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase SIST ISO/TR 15855:2002 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2002
.RQFHQWUDWLEDNURYLKFLQNRYLKLQVYLQþHYLKVXOILGRY3RVWRSQLSRVWRSHN]D
SUHVNXãDQMHVWDWLþQLKUD]PHULM
Copper, lead and zinc sulfide concentrates -- Step-by-step procedure for the testing of
static scales
Concentrés sulfurés de cuivre, de plomb et de zinc -- Procédure pas à pas pour les
essais des bascules statiques
Ta slovenski standard je istoveten z: ISO/TR 15855:2001
ICS:
73.060.99 Druge rude Other metalliferous minerals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL ISO/TR
REPORT 15855
First edition
2001-08-01
Copper, lead and zinc sulfide
concentrates — Step-by-step procedure for
the testing of static scales
Concentrés sulfurés de cuivre, de plomb et de zinc — Procédure pas à pas
pour les essais des bascules statiques
Reference number
©
ISO 2001
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that which is
normally published as an International Standard (“state of the art”, for example), it may decide by a simple majority
vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nature
and does not have to be reviewed until the data it provides are considered to be no longer valid or useful.
Attention is drawn to the possibility that some of the elements of this Technical Report may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 15855, was prepared by Technical Committee ISO/TC 183, Copper, lead and zinc ores and concentrates.
TECHNICAL REPORT ISO/TR 15855:2001(E)
Copper, lead and zinc sulfide concentrates —
Step-by-step procedure for the testing of static scales
1 Scope
This Technical Report outlines simple procedures to check the performance and calibration status of static scales.
The test sequence is intended for routine applications, generating results which can be used to calculate explicit
scale performance parameters (precision, bias and linearity) in accordance with the relevant equations shown in
ISO 12745, Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques.
It is stressed that the basic procedures described below do not replace comprehensive technical manuals
published by National Weights and Measures authorities to comply with legal and other specific requirements.
2 General Information
ISO 12745 provides a general summary of testing principles and procedures for weighbridges (in 5.3), hopper
scales (in 5.4), gantry scales (in 5.5) and platform scales (in 5.6), augmented by a list of test mass categories in
clause 6.
Weighbridges, hopper and platform scales represent the most common systems encountered in the context of
concentrate mass determinations for commercial consignments. Although the princ
...
TECHNICAL ISO/TR
REPORT 15855
First edition
2001-08-01
Copper, lead and zinc sulfide
concentrates — Step-by-step procedure for
the testing of static scales
Concentrés sulfurés de cuivre, de plomb et de zinc — Procédure pas à pas
pour les essais des bascules statiques
Reference number
©
ISO 2001
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that which is
normally published as an International Standard (“state of the art”, for example), it may decide by a simple majority
vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nature
and does not have to be reviewed until the data it provides are considered to be no longer valid or useful.
Attention is drawn to the possibility that some of the elements of this Technical Report may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 15855, was prepared by Technical Committee ISO/TC 183, Copper, lead and zinc ores and concentrates.
TECHNICAL REPORT ISO/TR 15855:2001(E)
Copper, lead and zinc sulfide concentrates —
Step-by-step procedure for the testing of static scales
1 Scope
This Technical Report outlines simple procedures to check the performance and calibration status of static scales.
The test sequence is intended for routine applications, generating results which can be used to calculate explicit
scale performance parameters (precision, bias and linearity) in accordance with the relevant equations shown in
ISO 12745, Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques.
It is stressed that the basic procedures described below do not replace comprehensive technical manuals
published by National Weights and Measures authorities to comply with legal and other specific requirements.
2 General Information
ISO 12745 provides a general summary of testing principles and procedures for weighbridges (in 5.3), hopper
scales (in 5.4), gantry scales (in 5.5) and platform scales (in 5.6), augmented by a list of test mass categories in
clause 6.
Weighbridges, hopper and platform scales represent the most common systems encountered in the context of
concentrate mass determinations for commercial consignments. Although the principles of testing are similar,
details vary depending on the availability and number of certified weights and the level of automation (in the case of
hopper scales having built-in reference weights).
3 Frequency of testing
The frequency of in-house and routine scale performance tests (in addition to mandatory certification intervals
stipulated by regulatory authorities) observed in practice ranges from none to as high as three times per
consignment in the case of some fully automated weighing hopper installations. The
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