the effect of the particle size distribution on non-newtonian turbulent ...

Chapter 3 Experimental Work Page 3.9
exception is <strong>the</strong> 200mm nominal bore pipe which has a straight entry length <strong>of</strong> 35
pipe diameters.
(b) Manometer Board
The manometer board serves as a centralised point for measuring pressure and flow.
There are six differential water manometers and <strong>the</strong> layout is shown in Figure 3.9 and
Figure 3.10. Electrical signals from <strong>the</strong> DPT and flow meters are output from <strong>the</strong>
board to <strong>the</strong> data logging system (Figure 3.11). Head loss measurements can be
measured with manometer menisci visible or masked, although <strong>the</strong> air over water
manometer head (ie. visible) is usually maintained during a test run to provide
confirmation <strong>of</strong> head loss measurements. Flushing water is supplied from <strong>the</strong> water
main (400 kPa) and air pressure is supplied at 800 kPa by a compressor.
Figure 3.9: Manometer Board