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FM341 · Friction Loss in a Pipe

Experimental Apparatus for the Study of Friction Loss in Pipes

Learning objectives / experiments
  • Study of the friction loss in a pipe
  • Investigation of laminar and turbulent flow
  • Measurement of the change in the laws of resistance, the friction factor, from laminar to turbulent flow
  • Determination of the critical Reynolds number
  • Demonstration of the transition point of the flow
  • Verification of Poiseuille's equation and of the coefficient of viscosity of water in the laminar flow region
  • Determination of the relation between hydraulic gradient and flow velocity, at low and at high flow rates
FM341
The FM341 apparatus with its parts named
Air valve
Sets the datum of the manometer tubes, with the hand pump supplied
Water manometer
Pressure tappings
One at each end of the test pipe
Test pipe
3 mm ID
Needle valve
Downstream of the test pipe, for precise flow control
Outlet hose to the hydraulic bench
Inlet
From the hydraulic bench, through a flexible hose not shown here
The FM341 apparatus with its parts named
Air valve
Sets the datum of the manometer tubes, with the hand pump supplied
Water manometer
Pressure tappings
One at each end of the test pipe
Test pipe
3 mm ID
Needle valve
Downstream of the test pipe, for precise flow control
Outlet hose to the hydraulic bench
Inlet
From the hydraulic bench, through a flexible hose not shown here
Technical specifications
    Operating environment laboratory conditions
    Operating temperature +5…+40 °C; storage −25…+55 °C when packed
    Operating relative humidity 80 % at temperatures below 31 °C, falling linearly to 50 % at 40 °C
    Test pipe nominal internal diameter 3 mm, horizontal on a base plate
    Water manometer 0…530 mm water, with air valve and hand pump
    Flow control precision needle valve downstream of the test pipe
    Bench connection hose connector, to the FM500 or any laboratory bench
    Net dimensions W 1000 × H 840 × D 460 mm
    Weight 12 kg
Data management software
    Students record every reading on a PC, in the Sangari eLearning platform. The software plots the hydraulic gradient against the flow velocity, calculates the friction factor and the Reynolds number, and exports the results for the report.
Scope of delivery
  • 1 FM341 apparatus
  • 1 Header tank for laminar flow
  • 1 measuring vessel
  • 1 thermometer
  • 1 hand pump for the manometer datum
  • 1 data management software licence
  • 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.