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Elements and Performance Criteria

  1. Prepare to work on density/level measurement components and system
  2. Hazards are identified, risks assessed and control measures implemented
  3. Nature of the density/level measurement problem is identified from documentation or appropriate person/s to determine the scope of work to be undertaken
  4. Appropriate person/s is consulted to ensure work is coordinated effectively with others
  5. Materials required for the work are determined in accordance with workplace procedures
  6. Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety in accordance with workplace procedures
  7. Solve density/level measurement problems
  8. Need to inspect, test or measure electrical components of live electrical work is determined in accordance with job requirements and workplace safety procedures
  9. Density/level measurement apparatus is checked and isolated in accordance with WHS/OHS requirements and workplace procedures
  10. Relevant methods are used to solve measurement problems from tests and calculated values as they apply to density/level measurement systems
  11. Unplanned situations are responded to in accordance with workplace procedures and with the approval of an authorised person/s
  12. Problems are resolved using sustainable energy principles and without damage to apparatus, the surrounding environment or services in accordance with workplace procedures
  13. Complete work and document work activities
  14. Worksite is cleaned and made safe in accordance with workplace procedures
  15. Justification for solutions used to resolve density/level measurement problems is documented
  16. Work completion is documented and appropriate person/s notified in accordance with workplace procedures

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Density/level measurement apparatus and system, fault finding, maintenance or development work functions must include at least three of the following:

determining the operating parameters of a density/level measuring system

setting up and calibrating a density/level measuring system

altering an existing density/level measuring system to comply with specified operating parameters

developing a density/level measuring system to comply with a specified function and operating parameters


Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including applying safe working practices

applying sustainable energy principles and practices

cleaning and making work site safe

completing work and documenting work activities

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

documenting completed work

implementing risk control measures

obtaining tools, equipment and testing devices

determining work on density/level measurement components and systems

solving density/level measurement problems

solving problems in density/level measurement systems

working with density/level apparatus.


Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

introduction to level/density measurement. including:

definitions density and relative density (sg)

application

factors affecting density

density measurement

Archimedes principle

density calculations

types and applications of level/density transducers

transducers input/outputs (I/O) - measurement and evaluation

transducer connections

level/density measurement techniques sight type, including:

dipstick and hook gauges

tubular and flat glass gauges

accuracy of flat glass gauges

magnetically coupled gauges

float level measuring devices

application of float devices

level/density measurement - force type techniques, including:

comparison of float and displacement type systems

interface sensing devices

torque tube type displacer operation

torque tube type displacer construction

pneumatic and electronic transmitters

level/density measurement - pressure-type techniques, including:

diaphragm level detectors

applications of diaphragm level detectors

differential pressure cells advantages and disadvantages

density measurement using D/P cells

level/density measurement - electrical type techniques, including:

application of conductance probes

operation of a conductivity-level controller

resistance tapes level detectors

capacitance probes level detectors

ultrasonic level detectors

microwave-based level detectors

nucleonic-type level sensors

load cells used for level measurement

level/density measurement - non-intrusive type techniques, including:

radiation-type density sensor

hydrometer element used for density measurement

vibrating tube type liquid density meter

level/density measurement calibration for:

D/P cell calculations

D/P calibration

open tank installation level measurement

problem solutions in density/level measurement systems

relevant job safety assessments or risk mitigation processes, including risk control measures

relevant manufacturer specifications

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

safe working practices.