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FM500 · Hydraulic Bench

Experimental Apparatus for the Study of Fluid Mechanics

A mobile, self-contained hydraulic bench that feeds a controlled flow of water to the fluid mechanics experiments and measures that flow two ways. Students read it on the digital display, then time the water rising in the stepped volumetric tank and compare the two results. The water recirculates through a 250 litre sump tank, so once filled the bench needs no mains water.
Description
    The FM500 runs on four wheels, two of them with foot-operated locks. Its body forms a 250 litre sump tank with a submersible pump. A hand-operated valve sets the flow from the pump, and an electronic flow meter shows it on a digital display. The worktop holds one experiment at a time. A quick-release connector joins the experiment to the pump outlet without tools, a raised rim holds back spilled water, and an open channel in the worktop takes weirs and notches. Water from the experiment returns to a volumetric measuring tank above the sump. The tank has a large chamber for high flow rates and a small one for low flow rates, a stilling baffle that calms the incoming water and a sight tube with a scale. A dump valve empties it back into the sump. For very small flow rates students use the measuring cylinder and the stopwatch. The flow meter sends its readings to a PC over USB, where the data management software records them.
Main characteristics
  • recirculating water circuit, no mains water needed after the first fill
  • submersible pump up to 150 L/min, with thermal overload protection
  • two flow measurements: electronic flow meter with digital display, and stepped volumetric tank
  • quick-release connector in the worktop, so experiments change without tools
  • open channel in the worktop for weirs and notches
  • four wheels, two with foot-operated locks
  • USB link to a PC and data management software
Technical specifications
    Operating temperature +5…+40 °C, laboratory
    Power supply 230 V, 50 Hz, single-phase, earthed
    Pump submersible, 370 W; max. flow 150 L/min; max. head 9 m
    Sump tank 250 L
    Volumetric measuring tank stepped, 60 L for high flow rates, 10 L for low flow rates, sight tube with scale
    Electronic flow meter 0…150 L/min, resolution 0.1 L/min, USB output
    Measuring cylinder 2 L, graduated
    Open channel L 600 × W 150 × H 180 mm
    Tanks and worktop corrosion-resistant glass-reinforced plastic
    Apparatus L 1230 × W 780 × H 1000 mm, worktop at 1000 mm
    Weight approx. 80 kg empty
230V
L 1230 W 780 H 1000 mm
80 kg
Learning objectives / experiments
  • measuring flow rate by the volumetric method, with the measuring tank and the stopwatch
  • checking the electronic flow meter against the volumetric measurement
  • flow over weirs and notches in the open channel
  • water supply and flow measurement for the fluid mechanics experiments
Experiments for the hydraulic bench
  • FM341 Friction Loss in a Pipe
  • FM342 Energy Losses in Pipe Fittings
  • FM351 Flow Meter Calibration
Scope of delivery
  • 1 hydraulic bench with sump tank, submersible pump, volumetric measuring tank and electronic flow meter
  • 1 measuring cylinder, 2 L
  • 1 stopwatch
  • 1 set of hoses and pipe clips
  • 1 data management software with USB cable
  • 1 set of instructional material

All components and accessories listed under Scope of delivery are supplied, whether or not they are visible in the illustrations.

Required for operation
  • 230 V, 50 Hz, 1 phase
  • 250 L of clean water for the first fill
  • Windows PC for the data management software