F1-21-Flow Meter Demonstration
This accessory is designed to introduce students to three basic types of flow meter, Venturi meter, Variable-area flow meter – Rotameter, Orifice plate. 8 pressure tappings are connected and displayed on the mamometer bank to visualise pressure profiles.
The equipment consists of a Venturi meter, variable area meter and orifice plate, installed in a series configuration to permit direct comparison. A flow control valve permits variation of the flow rate through the circuit. Pressure tappings are incorporated so that the head loss characteristics of each flow meter may be measured. These tappings are connected to an eight-tube manometer bank incorporating a manifold with an air bleed valve.
Pressurisation of the manometers is facilitated by a hand pump. The circuit and manometer are attached to a support framework, which stands on the working top of the Hydraulics Bench. The bench is used as the source of water supply and for volumetrically calibrating each flow meter.
Manometer range: 0-400mm
Number of manometer: tubes 8
Orifice plate diameter: 20mm
Variable area meter: 2-20 l/min
Throat diameter: 15mm
Upstream pipe diameter: 31.75mm
Upstream taper: 21° inclusive
Downstream taper: 14° inclusive
Requires Hydraulics Bench Service unit F1-10
Features & Benefits
- Directly comparing flow measurement using a Venturi meter, variable area meter and orifice plate
- Calibrating each flow meter using the volumetric measuring tank of the bench
- Comparing pressure drops across each device