BRAND: TEST INSTRUMENTS
CODE: TE150.07H40
Description
Bernoulli’s principle describes the relationship between the flow velocity of a fluid and its pressure. An increase in velocity leads to a reduction in static pressure in a flowing fluid, and vice versa. The total pressure of the fluid remains constant. Bernoulli’s equation is also known as the principle of conservation of energy of the flow. The experimental unit is used to demonstrate Bernoulli’s principle by determining the pressures in a Venturi nozzle. The experimental unit includes a pipe section with a transparent Venturi nozzle and a movable Pitot tube for measuring the total pressure. The Pitot tube is located within the Venturi nozzle, where it is displaced axially. The position of the Pitot tube can be observed through the Venturi nozzle’s transparent front panel. The Venturi nozzle is equipped with pressure measuring points to determine the static pressures. The pressures are displayed on the six tube manometers. The total pressure is measured by the Pitot tube and displayed on another single tube manometer. The experimental unit is positioned easily and securely on the work surface of the base module. The water is supplied and the flow rate measured by. Alternatively, the experimental unit can be operated by the laboratory supply.
Specification
Familiarisation with Bernoulli’s principle, Venturi nozzle with transparent front panel and measuring points for measuring the static pressures, Axially movable Pitot tube for determining the total pressure at various points within the Venturi nozzle, 6 tube manometers for displaying the static pressures, Single tube manometer for displaying the total pressure, Flow rate determined by base module, Water supply using base module or via laboratory supply
Technical data
Venturi nozzle
A: 84…338mm2
Angle at the inlet: 10,5° Angle at the outlet: 4°
Pitot tube
Movable range: 0…200mm
Ø 4mm
Pipes and pipe connectors: PVC
Measuring ranges
Pressure: 0…290mmWC (static pressure), 0…370mmWC (total pressure)
Dimensions and weight LxWxH: 1100x680x900mm
Weight: approx. 28kg
Required for operation
(closed water circuit) or water connection, drain
Learning objectives/experiments
Energy conversion in divergent/convergent pipe flow
Recording the pressure curve in a Venturi nozzle
Recording the velocity curve in a Venturi nozzle
Determining the flow coefficient
Recognising friction effects
Scope of delivery
1 experimental unit
1 set of instructional material
Features
Investigation and verification of Bernoulli’s principle
Static pressures and total pressure distribution along the Venturi nozzle
Determination of the flow coefficient at different flow rates
