8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of safe working practices and solving problems in pressure measurement components and systems. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EI102A Pressure Measurement Evidence shall show an understanding of pressure measurement used in industrial processes to an extent indicated by the following aspects: T1 Pressure measurement terms and transducers encompassing: Purpose of pressure measurement Applications of pressure measurement Common terms and relationships Pressure and the relationship between applied pressure, density, mass, force, area and the height of liquid columns. Types and applications of pressure transducers Transducers input/outputs - Measurement and evaluation Transducer connections T2 Manometers encompassing: Types of manometers Operating principles of manometers Gauge pressure measurement Wet leg Manometers applications Manometer limitations T3 Absolute, gauge and atmospheric pressure measurement encompassing: Absolute and gauge pressure. Absolute zero pressure Atmospheric pressure Barometers Absolute pressure gauges T4 Mechanical pressure measuring devices encompassing: Bourdon tube gauges Spiral and helical gauges Term: Flexibility spring rate Other mechanical pressure elements: bellows, capsule, slack/stiff diaphragms. Pressure measurement using elastic deformation gauges T5 Electrical pressure measuring devices encompassing: Electrical sensors for pressure measurements: (capacitive, piezo, inductive, strain gauge). Operating principles of electrical pressure elements Testing elements Electrical signal transmission devices. T6 Dead weight testers encompassing: Law of hydraulics Dead Weight Tester operating principles Dead Weight Tester operating procedures Terms: Backlash, hysterics, repeatability Calibration of gauges Precautions Bourdon tube gauges calibration T7 Testing and installation of pressure measurement devices encompassing: Testing Calibration Installation of pressure measurement devices within pressure vessel systems. Isolation, seal, vent, drain and bypass valves location and operation sequence. T8 Pressure transmitters and converters encompassing: Principle of operation of moment, motion and forced balanced transmitters for pneumatic, electrical, and electronic transmitters. Applications of transmitters Transmitter connections Manufacturer’s manuals Calibration of transmitters Principle of operation of signal convertors Applications of pressure converters Calibration of pressure converters |