The experimental unit contains different flow rate measurement devices that are clearly laid out with the associated pipework on a metal sheet. So that the function can be observed, the measuring devices are made of transparent plastic.
The flow rate is measured using a measuring nozzle, orifice plate flow meter, venturi nozzle and rotameter.
To determine the flow rate using a measuring nozzle / orifice plate flow meter and with the venturi nozzle, a differential pressure measuring device is required. This is included in the form of a multitube manometer so that the pressure curve along the venturi nozzle can also be displayed.
The experimental unit is positioned easily and securely on the work surface of the base module HM 150. The water is supplied and the flow measured by HM 150. Alternatively, the experimental unit can be operated by the laboratory supply.
Learning Objectives / Experiments
- comparison of different flow rate measuring
devices - flow rate measurement with measuring nozzle /
orifice plate flow meter - flow rate measurement with venturi nozzle - flow rate measurement with rotameter - determination of corresponding flow rate
coefficients - familiarisation with differential pressure
measurements - calibration of flow rate measuring devices
 Investigation of different methods of flow rate measurement, for use with HM 150 Basic Hydraulics Bench  l x w x h 1100x640x870mm, 40kg  Pipework made of plastic  Variable-area flow meter 1600L/h  Differential pressure measurement on venturi flow meter, orifice and nozzle
- A: 84...338mm˛
- angle at inlet: 10,5°
- angle at outlet: 4°
Orifice plate flow meter: diameter=14mm
Measuring nozzle: diameter=18,5mm
Rotameter: max. 1.700L/h
6-tube manometer: 390mmWC
Pipes and fittings: PVC
Dimensions and Weight
LxWxH: 1.100x672x900mm Weight: approx. 30kg
Required for Operation
HM 150 (closed water circuit) or alternatively water connection and drain
Scope of Delivery
1 experimental unit
1 set of measuring objects (orifice plate flow meter,