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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Measure wet and dry bulb temperature by using a whirling Hygrometer 
SAQA US ID UNIT STANDARD TITLE
259623  Measure wet and dry bulb temperature by using a whirling Hygrometer 
ORIGINATOR
SGB Occupational Health and Safety 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 09 - Health Sciences and Social Services Preventive Health 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard reflects the skills, values and knowledge required by people in the field of Occupational, Health and Safety who are responsible for measuring environmental thermal conditions by means of a whirling hygrometer and takes the appropriate action.

Qualifying learners can measure wet and dry bulb temperature.

A person credited with this unit standard is able to:
  • Describe the specified requirements pertaining to measuring thermal conditions.
  • Prepare to determine thermal conditions.
  • Determine and record thermal conditions and take appropriate action.
  • Perform post-measurement activities. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication and Mathematical Literacy at NQF Level 1. 

  • UNIT STANDARD RANGE 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Describe the specified requirements to measure thermal conditions. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The limits for thermal stresses in the working place are explained according to the specified workplace requirements. 

    ASSESSMENT CRITERION 2 
    The importance of measuring thermal conditions is explained in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The whirling Hygrometer's principle of operation and the relationship between wet bulb and dry bulb temperatures is explained according to manufacturer's specifications. 

    ASSESSMENT CRITERION 4 
    The range and limitations of the whirling Hygrometer is explained in accordance with specified requirements. 

    SPECIFIC OUTCOME 2 
    Prepare to determine thermal conditions. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Permission to enter the working place is obtained in accordance with site-specific requirements. 

    ASSESSMENT CRITERION 2 
    The location where a measurement is required is selected in accordance with measurement specifications. 

    ASSESSMENT CRITERION 3 
    Possible risk and influence on accurate measurement at the selected location is identified and dealt with in terms of measurement specifications and workplace conditions. 

    ASSESSMENT CRITERION 4 
    The required personal protective equipment is used in accordance with its design and specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Use includes the checking of availability, examination, in working order, fit for purpose.
     

    ASSESSMENT CRITERION 5 
    The whirling Hygrometer is used in accordance with manufacturer's specifications. 
    ASSESSMENT CRITERION RANGE 
    Use includes examination, dealing with defects, handled and transported.
     

    SPECIFIC OUTCOME 3 
    Determine and record thermal conditions and take appropriate action. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Conditions that may influence the accuracy of readings are dealt with in accordance with measurement requirements and worksite procedures. 

    ASSESSMENT CRITERION 2 
    The thermal conditions are measured according to measurement specifications. 

    ASSESSMENT CRITERION 3 
    The results are recorded and sub standard conditions are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The surrounding area is continuously assessed and hazards and risks are dealt with in accordance with specified requirements. 

    SPECIFIC OUTCOME 4 
    Perform post-measurement activities. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The Hygrometer is cleaned and stored in accordance with manufacturer's specifications and site-specific requirements. 

    ASSESSMENT CRITERION 2 
    A defective Hygrometer is reported and dealt with in accordance with worksite specified requirements. 

    ASSESSMENT CRITERION 3 
    Reports are completed and submitted in accordance with legal and site-specific requirements. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA, according to the ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments, unless ETQA policies specify otherwise.
  • Anyone wishing to be assessed against this unit standard may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following embedded knowledge will be assessed in an integrated way in the context of the unit standard.

    Knowledge relating to determining the cooling power and low air velocities by means of a whirling Hygrometer:
  • The instrument's principle of operation, range and limitations.
  • The importance of providing and maintaining air with a cooling power.
  • The importance of measuring the cooling power as prescribed.
  • Alternative methods of determining cooling power.

    Critical factors relating to determining the cooling power and low air velocities by means of a whirling Hygrometer:
  • Legal and site-specific requirements.
  • Risk Assessment procedures and actions.
  • Identifying principal components of instruments and equipment and explaining their specifications and functions.
  • Communication and reporting requirements.

    Processes and events relating to determining the cooling power and low air velocities by means of a whirling Hygrometer:
  • Principles of the process.
  • Preparation.
  • Monitor and control.
  • Operating parameters and control methods.

    Causes and effects (Occupational safety and health):
  • Use of personal protective equipment.
  • Use of instruments and equipment.
  • Workplace hazards and associated risks.
  • Housekeeping.

    Procedures and techniques relating to determining the cooling power and low air velocities by means of a whirling Hygrometer:
  • Methods of collecting, analysing, organising, summarising and presenting data.
  • Fault finding and corrective techniques.
  • Handling procedure and controls.

    Regulations, legislation, agreements, policies and standards:
  • Safety, health and environmental legislation and regulations.
  • Quality policies, standards and agreements. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking.

    Note: The ability of the candidate to measure thermal conditions and critical temperatures contributes to his/her problem solving skills. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as members of a team, group, organisation or community.

    Note: The ability and willingness of the candidate to accept, interpret and delegate work instructions correctly, when and if required, in an appropriate manner indicates that he/she can work effectively as a team member in the bigger organisational structure. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.

    Note: Competence in applying knowledge will indicate that the candidate can organise and manage activities in his/her working environment. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.

    Note: The ability of the candidate to collect, organise and evaluate the necessary data and explain meanings and results will indicate proficiency. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively, using visual, mathematical and/or language skills in the modes of oral and/or written presentations.

    Note: The ability of the candidate to use visual, mathematical and language skills will indicate his/her effectiveness to communicate information in the modes of oral and written presentations. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically showing responsibility towards the environment and health of others.

    Note: The ability of the candidate to measure thermal conditions correctly will contribute towards protection of the environment and health. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation.

    Note: The ability of the candidate to identify and refer irregular behaviour to a specialist confirms understanding that a specific observation, inference, action or decision can have an interrelated effect. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Terminology:

    Specified Requirements:

    Specified requirements include legal and site-specific requirements and are contained in one or more of the following documents:

    Legal:
  • Relevant current legislation, regulations and directives pertaining to mining and occupational health and safety.

    Site-Specific Requirements:
  • Managerial instructions.
  • Codes of Practice.
  • Company Standards.
  • Standard Task Procedures.
  • Health Management Programme.
  • Risk Assessment Documentation.
  • Working Guides.
  • Manufacturers' specifications. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  74269   National Certificate: Occupational Health, Safety and Environment  Level 2  NQF Level 02  Reregistered  2023-07-30  As per Learning Programmes recorded against this Qual 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.