Measuring pressure is important in the engineering industry, e.g. in plant, turbomachine and aircraft construction and in process engineering. Other fundamental factors such as flow rate or flow velocity can also be determined based on a pressure measurement.
The experimental unit enables the user to measure the pressure with two different measuring methods: directly by measuring the length of a liquid column (U-tube manometer, inclined tube manometer) and indirectly by measuring the change of shape of a Bourdon tube (Bourdon tube pressure gauge). In a U-tube manometer, the pressure causes the liquid column to move. The pressure difference is read directly from a scale and is the measure for the applied pressure. In inclined tube manometers, one leg points diagonally up. A small height difference therefore changes the length of the liquid column significantly.
Learning Objectives/Experiments
Familiarisation with 2 different measuring methods:
Direct method with U-tube manometer and inclined tube manometer
Indirect method with Bourdon tube pressure gauge
Principle of a Bourdon tube pressure gauge
Calibrating mechanical manometers
Specification
Basic experiments for measuring pressure with three different measuring instruments
U-tube and inclined tube manometer
One Bourdon tube pressure gauge each for positive and negative pressure
Plastic syringe generates test pressures in the millibar range
Calibration device with Bourdon tube pressure gauge for calibrating mechanical manometers
Technical Data
Inclined tube manometer
angle: 30°
Measuring ranges
pressure:
0…±60mbar (Bourdon tube pressure gauge)
0…500mmWC (U-tube manometer)
0…500mmWC (inclined tube manometer)
