Organizational Structures and Design - Assignment
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Added on 2021-02-19
Organizational Structures and Design - Assignment
Added on 2021-02-19
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Table of ContentsCHAPTER 1: INTRODUCTION....................................................................................................1Study background........................................................................................................................1Real life applications....................................................................................................................1Aims and objectives.....................................................................................................................1CHAPTER 2: THEORY AND DESIGN.........................................................................................1RTD Sensor..................................................................................................................................2Class of sensor.............................................................................................................................3Mode of RTD operation ..............................................................................................................3Types of sensor............................................................................................................................4CHAPTER 3: DESIGN AND CONSTRUCTION .........................................................................6Introduction..................................................................................................................................6Bridge circuit...............................................................................................................................6Resistance values ........................................................................................................................6Power dissipation ........................................................................................................................6Operational amplifier ..................................................................................................................6System linearity ..........................................................................................................................6CHAPTER 4: DISCUSSION AND RESULTS ..............................................................................6CHAPTER 5: RECOMMENDATIONS AND CONCLUSION ....................................................7Reflection.....................................................................................................................................7Design strength and weakness.....................................................................................................7Recommendations........................................................................................................................7REFERENCES................................................................................................................................9APPENDIX....................................................................................................................................10
CHAPTER 1: INTRODUCTIONStudy backgroundTemperature sensor is defined as the device which measures the heat energy or coldnessfor sensing temperature variations and to product an equivalent digital or analogue output. It isvery critical to develop temperature controller and measurement systems which are notinfluenced by the environmental stress. For maintaining the desired temperature it is essentialthat suitable sensors are chosen for the designing process. There has been trade off betweenvarious types of sensors. For instance from cost effectiveness and suitability of wide applicationrange thermocouples are better. However, from the accuracy context resistance temperaturedetector (RTD) are considered as the best. Thus, it is required that temperature sensors chosenfor the temperature measurement must be selected appropriately. Real life applicationsThe temperature measurement sensors and devices are used in various practicalapplications. For the qualitative production of the manufactured goods it is important for themanufacturers to maintain a constant temperature so that safe and accurate production can becarried out (Dorf, 2016). Such manufacturing plants and process essentially employ temperaturemeasurement sensors so that temperature changes can be identified and constant temperature canbe sustained. Thus, these systems are used in medical devices, food processing industries,automotive processes and chemical handling. Aims and objectivesThe aim of this report is to design a temperature measurement system which usestemperature sensors to measure the temperature. The key objectives of the project are as follows:To use platinum RTD based sensor for designing temperature measurement system whichcan measure temperature in the range 0-100 degree Celsius. To design bridge circuit and to measure current value and different performance factorsof sensor. To use and justify a suitable amplifier for the designed system. CHAPTER 2: THEORY AND DESIGNTemperature sensors are broadly classified as the contact and non contact sensors. Thecontact sensors needs physical contact with the surface for monitoring the temperature changes.On the other hand non-contact temperature employs the radiation or convection for sensing the1
changes. The most common types of temperature sensors are RTD, thermocouple andthermistors. The thermocouple consist of two different metallic wires which forms a junction orconnection at two points. The temperature difference between these two points reflects thetemperature changes in proportionality. Contrary to this in this study RTD sensors are usedwhich uses temperature and resistance correlation for the temperature measurement. RTD SensorThe resistance of the metal substances is a variable function of temperature changes.RTD sensors can be defined as the resistors which have clearly defined temperature andresistance characteristics. These are available with the 100 and 100 ohm resistance at zero degreeCelsius temperature. These are known as PT100 and PT1000 and are commonly called platinumRTD. This types of sensors are linear, accurate and stable (Dankoco and et.al., 2016). One of thekey advantage of this type of sensors is that they hare highly accurate and provide goodrepeatability. Due to high thermal mass as compare to the thermocouples RTDs have slow rate ofresponse towards temperature change. (Source: Pt100 temperature sensor – useful things to know, 2018)2Illustration 1: Temperature characteristics of RTD
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