Pressure Measurement and Calibration
19 เมษายน 2566
ผู้ชม 194 ผู้ชม
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.
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
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
FEATURES & BENEFITS
KEY FEATURES
- Includes simple Deadweight Pressure Calibrator using water for safety and ease of use
- Bourdon gauge and electronic sensor included for calibration
- Operating mechanism of Bourdon gauge visible through clear scale
- Electrical sensor can be logged using a PC (not supplied). Optional teaching software is available for data logging
