2665 Demonstrate knowledge of instrumentation calibration

					                                                                              2665 version 5
                                                                                 Page 1 of 4

Demonstrate knowledge of instrumentation calibration terminology and
standards

Level                             3

Credits                           3

Purpose       People credited with this unit standard are able to:
              – explain terms used in instrument calibration;
              – define and explain calibration standards; and
              – define and explain requirements for calibration equipment and records.


Subfield                          Industrial Measurement and Control

Domain                            Industrial Measurement and Control - Theory

Status                            Registered

Status date                       19 May 2008

Date version published            19 May 2008

Planned review date               31 December 2013

Entry information                 Open.

Accreditation                     Evaluation of documentation and visit by NZQA and
                                  industry.

Standard setting body (SSB)       ElectroTechnology Industry Training Organisation

Accreditation and Moderation Action Plan (AMAP) reference                 0003
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.

Special notes

1    This unit standard has been developed for learning and assessment off-job.

2    Details of standards relating to primary and secondary measurement can be obtained
     from the Crown Research Institute (CRI) Measurement Standards Laboratory,
     previously the Department of Scientific and Industrial Research (DSIR).

3    Reference
     ANSI/ISA-51.1-1979 (R1993) Process Instrumentation Terminology;
     and all subsequent amendments and replacements.




                                                              New Zealand Qualifications Authority 2010
                                                                                   2665 version 5
                                                                                      Page 2 of 4

4     Definitions
      Industry requirements – includes all asset owner requirements; manufacturers’
      specifications; enterprise requirements which cover the documented workplace
      policies, procedures, specifications, and business requirements; and quality
      management requirements relevant to the workplace in which the assessment is
      carried out.
      IANZ – International Accreditation New Zealand.
      Total reliability in test results and inspection reports is vital. Accreditation by IANZ
      ensures that the laboratory, radiology service or inspection service that carries out
      these tests or inspections is technically competent.
      IRL – Industrial Research Limited - Measures Standards Laboratories (MSL).

Elements and performance criteria

Element 1

Explain terms used in instrument calibration.

Performance criteria

1.1         'Range' is explained and applied to examples.

            Range         lower range value, upper range value.

1.2         'Span' is explained and applied to examples.

            Range         upper range value, lower range value.

1.3         'Zero elevation' is explained and applied to examples.

            Range         273C to 100C, -10 to 50C.

1.4         'Zero suppression' is explained and applied to examples.

            Range         4-20mA, 20-100kPa, 3-15psi.

1.5         'Linearity' is explained and applied to examples.

            Range         independent, terminal based, zero based.

1.6         Calibration terms are explained and applied to examples.

            Range         error, accuracy, hysteresis, dead band, repeatability,
                          reproducibility.




                                                                   New Zealand Qualifications Authority 2010
                                                                                  2665 version 5
                                                                                     Page 3 of 4

Element 2

Define and explain calibration standards.

Performance criteria

2.1         Primary measurement standards are defined.

            Range        Measurement Standard Laboratory (MSL), standards traceable
                         internationally, melting point of tin, triple point of water.

2.2         Secondary measurement standards are defined.

            Range        dead weight tester, digital pressure gauge or calibrator, precision
                         traceable resistance temperature detector and indicator,
                         International Accreditation NZ (IANZ).

2.3         The requirements and documentation of calibration instruments in terms of
            certification and regular calibration against National Standards are defined.

Element 3

Define and explain requirements for calibration equipment and records.

Performance criteria

3.1         Accuracy ratio of calibration standard compared to unit under test (UUT) is
            defined.

3.2         Calculations and examples regarding calibration accuracy ratio are performed.

3.3         Examples of digital sampling and their implications in terms of transient
            (instrument) accuracy are given.

3.4         Relevance of smart configurable instrument accuracy and calibration standards
            is identified.

3.5         Ideal requirements for an instrument calibration laboratory are identified in
            accordance with industry requirements.

            Range        temperature and humidity controlled environment.

3.6         Procedures for recording instrument calibration data are described in
            accordance with industry requirements.

Please note

Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.




                                                                  New Zealand Qualifications Authority 2010
                                                                              2665 version 5
                                                                                 Page 4 of 4

Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.

Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.

Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.

Comments on this unit standard

Please contact the ElectroTechnology Industry Training Organisation connect@etito.co.nz
if you wish to suggest changes to the content of this unit standard.




                                                              New Zealand Qualifications Authority 2010

				
DOCUMENT INFO