TEMPERATURE TESTING PLATFORM AND GAS SENSORS
Big data plays an important role in the development of the industry today, where big data can provide convenience in analytical data and support the decision making process of various types of cases very quickly. The process of data stored on big data comes from data retrieval which was previously p...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/43267 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Big data plays an important role in the development of the industry today, where big data can provide convenience in analytical data and support the decision making process of various types of cases very quickly. The process of data stored on big data comes from data retrieval which was previously performed by sensors so as to facilitate data collection. The sensor is a sensing element that can detect changes in stimulation which then turn it into an electrical signal. The amount of output detected can be in the form of voltage, current, charge, resistance or resistance, inductance or capacitance.
The purpose of this study is to support research in the field of advanced materials developed at the laboratory scale to be implemented outside the ideal conditions of the lab (field). For the gas sensor itself has two parts, namely the microheater and the sensitive layer, where the purpose of the microheater is to make the sensitive layer work in maximum performance like in ideal lab conditions. The materials used are CNT-EG, CNT-EG, Graphene ink and Graphene-ZnO composites with a ratio of 1:1.
Graphene-ZnO 1:1 composites were obtained using the reflux method. Material synthesized by XRD (X-Ray Diffraction) for approval of the crystalline phase formed. The SEM (Scanning Electron Microscopy) test shows the reflux method succeeded in making ZnO particles.
The results of this experiment show that CNT-RO and Graphene-ink are not stable enough to be used as an alternative material for the sensor heater and CNT-EG can be an alternative material heater solution with a maximum temperature of 300ºC. The results of microheater characterization using CNT-EG material produced the smallest temperature ? 25°C at 1V and 0.04A voltage while using 12V voltage and 0.061A current produced a temperature of ? 63°C. CNT-RO produces the smallest temperature of 28 ° C with a voltage of 1.5V and a current of 0.01A while with a voltage of 8.3V and a current of 0.26A produces a temperature of ? 165 ° C. Graphene-ink produces the largest temperature with a threshold of 11V that is ? 288°C, while for the smallest temperature with a voltage of 1.5V and current 0.01A is 31°C. rom the tests carried out it was found that unstable temperatures affect sensor readings and unstable temperatures are influenced by the target gas exposure flow and unequal recovery. Sensor test
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results with CO gas show that the G: ZnO 1:1 composite material can work at room temperatures of 75ºC and 100ºC. The second device test results are stable with a response of 37.4% at 200 ° C at 65 ppm |
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