Test 1 Transducer
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The document provides instructions for several questions related to instrumentation and control engineering. For question 1, the candidate is asked to identify at least three criteria for choosing a flow transducer for an offshore oil and gas flow measurement system. The criteria include repeatability, reproducibility, range, accuracy, response time and maintenance requirements.
Test 1 Transducer
- 1. SEI 4153 @gXMl'H,$. Test l(r0%) 21 Feb2AlI I l. You are the instrumentation and control engineering of an oil and gas company. you are given a task to design a flow measurement system to measurethe crude oil at the offshore plant. You need to identify the flow transducerthat is suitable for your application. Discuss what criterion will you be looking at for choosing the best transducer for your system? (Provide at least THREE criterions) -j r><+-'t*Lr)r! '-'p'-1rn< O-iu ' tl :*ffi* nr**^k "k -ru,"r*'.-,pcra' 2. tt,.,;;;'pn RepeatabilityandReproducibility. a. Definitionof the aboveterminology. (4 M) b. Discuss situation the whenan instrument saidto be high in repeatability. is (2 M) 7ac.st4 3. Explain how transducerscan be classified on the basis of energy conversion into modifiers, modulatorsand self-generators. Provide ONE example for each classification. (6 M) 1zrtt',f .4ti..^t 4. A problem with the practical use of thermocouples the necessityof knowing the is reference temperature. Briefly discuss,Jhree techniques employed for reference *"":ili,-g5l-[r**n,. compensation. fuq (6M) AC o/ 5. A cooper-constantanthermocouplewas found to have linear calibration between 0 "C and g/o 400 'C with e.m.f. at maximum temperaturebeing equal to 20 mV (with referenceto cold rr/ / ./ .6 a junction temperature0 "C) aor9 --Iornv 6 gtv a. Thesensitivity thethermocouple. of ::i;t;:" (2 M) b . If the indicated e.m.f.is 8.90mV (with reference coldjunctiontemperature to at20 'C) in the thermocouple circuit, determine temperature the hotjunctio"'T,IFa the of (2 M) c. Sketchand label two emf datasetsin a graphwith reference coldjunction 0 "C and.20 to "c. *uhFV (2 M) o '----7 o o (- , , " : . rc >r, 8,1 mt/ 2 *'-l * ofo )ro 1nV PageI/I v"'-&'l r'- o 40c f ee * 7'q'o.. ,9 4oe ,o-s'' ,q tc-*z