The Main Parts
Figure 2 shows the main parts of the equipment - shown on the top of a TecQuipment Hydraulic Bench (supplied separately). Figure 3 shows a more detailed drawing of the apparatus. The unit fits onto either a H1 or H1D bench (supplied separately), which can supply water and measure flow.
The main part is a transparent cylindrical tank held between a top and bottom plate by three threaded bars. The whole assembly sits on three adjustable legs.
The water enters the tank through a vertical inlet pipe that ends in a tapered nozzle inside the tank. This produces a jet of water which hits the vane in the form of a Flat Plate and Hemispherical Cup (supplied as standard) or 120 degree Conical Plate and 30 degree Angled Plate (Optional H8a). The water leaves the tank through a drain pipe to allow you to direct it back into the hydraulic bench to measure flow.
Figures 2 and 3 show the vane (hemispherical cup or the flat plate) supported by a pivoted beam, restrained by a light spring. The beam carries a jockey weight. Adjusting the jockey weight sets the beam to a balanced position (as indicated by the tally) along with adjustment of the knurled nut above the spring. Any force generated by impact of the jet on the vane may now be measured by moving the jockey weight along the lever until the tally shows that the lever is back at its original balanced position.
The Standard and Optional Plates
TecQuipment supply a flat plate and a hemispherical cup with the equipment, but they also offer additional plates H8a (supplied separately). A retaining screw holds the plate in position from the weigh beam and above the nozzle.