Question: a) Specify an instrument, providing justification in each case, which is suitable for measuring each of the following: (i) the flow-rate of steam in a

a) Specify an instrument, providing justification in each case, which is suitable for measuring each of the following: (i) the flow-rate of steam in a 50mm nominal bore pipe (ii) the flow-rate of phosphoric acid in the range 820m3/ hour (iii) the mass flow-rate of nitrogen (iv) the flow-rate of a suspension where the meter has to be installed directly after a bend in the pipe NOTE, that differential pressure devices and variable area flow-meters are not allowed, and that in each case, the instrument is to be installed in a fully automated plant, and a 4-20mA output signal is required. [8 marks]

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