TH2Pressure Measurement And Calibration Didactic Equipment Vocational Training Equipment Thermal Lab Equipment
DESCRIPTION A bench top unit designed to introduce students to pressure, pressure scales and common devices available to measure pressure. The equipment utilises a Deadweight Pressure Calibrator (DPC) to generate a number of predetermined pressures. This is connected to a Bourdon gauge and electronic pressure sensor to enable their characteristics, including accuracy and linearity, to be determined. The DPC consists of a precision ground piston and cylinder with a set of weights giving an operating range of 20 kNm-2 to 200 kNm-2. The Bourdon gauge and pressure sensor are mounted on a manifold block with a separate reservoir to contain the hydraulic fluid (water for safety and ease of use). Valves enable easy priming, restricted flow of water to demonstrate the application of damping and the connection of alternative devices for calibration. TECHNICAL SPECIFICATIONS Operating range of Deadweight Pressure Calibrator: 20 kN/m² – 200 kN/m² Diameter of Deadweight Calibrator Piston: 0.017655 m Cross-sectional area of Dead-weight Calibrator: 0.000245 m² Pressure produced in cylinder by mass of piston with no applied masses: 20 kN/m² Approximate capacity of priming vessel: 150 ml EXPERIMENTAL CONTENT To gain an understanding of the concept of pressure and pressure measurement To gain an understanding of the concepts of measurement and calibration To investigate the behaviour and operation of a Bourdon gauge To investigate the behaviour, operation and Calibration of a Deadweight Pressure Calibrator To investigate the behaviour of two kinds of pressure sensor To observe the effect of damping on pressure measurement To convert an arbitrary scale of pressure sensor output into engineering units To calibrate a semiconductor pressure sensor To investigate the sources of error when measuring pressure To prove Boyle’s law – that absolute pressure
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