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(1) A water treatment company uses a magnetic flowmeter that is specified to have a maximum relative error of 1%, with 10:1 turn-down to measure

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(1) A water treatment company uses a magnetic flowmeter that is specified to have a maximum relative error of 1%, with 10:1 turn-down to measure dissolved chlorine flowrate in the operation. The meter is specified for maximum 1000 gallons per minute (GPM). (a) State the possible URV and LRV this meter should be able to measure at this maximum error. (b) State the accuracy of flow rate this meter can measure. 1=Z12=792 [2] (c) If the company measures 700GPM, what will be the possible meter reading? (d) If the maximum error is 1% FSD of the flow rate measurement, what will be the possible meter reading? (2) A load cell is calibrated in an environment at a temperature of 21C and has the following When used in an onuimanant at 250C its characteristic changes to the following: (a) Determine the sensitivity at 21C and 35C in m/kg. [12] (b) Calculate the total zero drift and sensitivity drift at 35C in m and m/kg. [4.5] (c) Hence determine the zero drift and sensitivity drift coefficients (in units of m/C and (m per kg)/(C) respectively). (d) Develop the mathematical model that relate the input and the output variables of this instrument system for each temperature environment with the original instrument unit. S=x50y1 [8]

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