CO2 Concentration Detector - Revision history

Zhaoyun: /* Results and Analysis */

2025-04-29T12:52:02Z

Results and Analysis

← Older revision		Revision as of 20:52, 29 April 2025
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	According to the ideal gas law, the corresponding number of moles can be calculated:		According to the ideal gas law, the corresponding number of moles can be calculated:

	<center><math>~~\large~~\mathbf{PV = nRT}</math></center>		<center><span style="font-size:150%;">'''<math>\mathbf{PV = nRT}</math>'''</span></center>

	Thus we can get the following tables present the output voltages from the photodetector corresponding to different CO<sub>2</sub> concentrations(the volumn of the chamber is 80ml). Each voltage value represents an individual measurement, and an average is calculated from three groups.		Thus we can get the following tables present the output voltages from the photodetector corresponding to different CO<sub>2</sub> concentrations(the volumn of the chamber is 80ml). Each voltage value represents an individual measurement, and an average is calculated from three groups.

2025-04-29T12:51:36Z

Results and Analysis

← Older revision		Revision as of 20:51, 29 April 2025
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	\|}		\|}

			According to the ideal gas law, the corresponding number of moles can be calculated:

	~~The~~ following tables present the output voltages from the photodetector corresponding to different CO<sub>2</sub> concentrations. Each voltage value represents an individual measurement, and an average is calculated from three groups.		<center><math>\large\mathbf{PV = nRT}</math></center>

			Thus we can get the following tables present the output voltages from the photodetector corresponding to different CO<sub>2</sub> concentrations(the volumn of the chamber is 80ml). Each voltage value represents an individual measurement, and an average is calculated from three groups.

	{\| class="wikitable"		{\| class="wikitable"

2025-04-29T12:49:52Z

Results and Analysis

@@ Line 50: / Line 50: @@
 </gallery>
-The following tables present the measured output voltages from the photodetector corresponding to different CO<sub>2</sub> concentrations. Each voltage value represents an individual measurement, and an average is calculated from three groups.
+From the measurement we can get the following data:
 {| class="wikitable"

2025-04-29T12:08:33Z

Results and Analysis

← Older revision		Revision as of 20:08, 29 April 2025
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	<gallery widths="500px" heights="350px">		<gallery widths="500px" heights="350px">
	File:Volumn.jpg\|Volumn of cylinder		File:Volumn of cylinder.jpg \|Volumn of cylinder
	File:Temperature.png\|Temperature		File:Temperature.png\|Temperature
	</gallery>		</gallery>

2025-04-29T12:07:24Z

Results and Analysis

← Older revision		Revision as of 20:07, 29 April 2025
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	where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature. In our case, T = 295K, V= 130ml (which is the volumn of the gas cylinder).		where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature. In our case, T = 295K, V= 130ml (which is the volumn of the gas cylinder).

			<gallery widths="500px" heights="350px">
			File:Volumn.jpg\|Volumn of cylinder
			File:Temperature.png\|Temperature
			</gallery>

	We use the averaged voltage response as a function of CO<sub>2</sub> concentration:		Accorading to these above, we can calculate the exact concentartion of CO<sub>2</sub>(the air chamber's volumn is approximately 80ml), we use the averaged voltage response as a function of CO<sub>2</sub> concentration to plot the curve:

	<math>		<math>

2025-04-29T12:01:20Z

Results and Analysis

← Older revision		Revision as of 20:01, 29 April 2025
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	<center><span style="font-size:150%;">'''<math>\mathbf{PV = nRT}</math>'''</span></center>		<center><span style="font-size:150%;">'''<math>\mathbf{PV = nRT}</math>'''</span></center>

	where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature.		where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature. In our case, T = 295K, V= 130ml (which is the volumn of the gas cylinder).

2025-04-29T11:57:34Z

Results and Analysis

← Older revision		Revision as of 19:57, 29 April 2025
Line 90:		Line 90:
	According to the ideal gas law, the corresponding number of moles can be calculated:		According to the ideal gas law, the corresponding number of moles can be calculated:

	<center><math>~~\large~~\mathbf{PV = nRT}</math></center>		<center><span style="font-size:150%;">'''<math>\mathbf{PV = nRT}</math>'''</span></center>

	where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature.		where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature.

2025-04-29T11:57:03Z

Results and Analysis

← Older revision		Revision as of 19:57, 29 April 2025
Line 90:		Line 90:
	According to the ideal gas law, the corresponding number of moles can be calculated:		According to the ideal gas law, the corresponding number of moles can be calculated:

	<center>~~'''~~<math>PV = nRT</math>~~'''~~</center>		<center><math>\large\mathbf{PV = nRT}</math></center>

			where P is the pressure,V is the volume, n is the number of moles,R is the ideal gas constant, and T is the absolute temperature.

	~~where~~
	~~\( P \) = pressure (in pascals, Pa),~~
	~~\( V \) = volume (in cubic meters, m³),~~
	~~\( n \) = number of moles (mol),~~
	~~\( R \) = ideal gas constant (8.314 J·mol⁻¹·K⁻¹),~~
	~~\( T \) = absolute temperature (in kelvins, K).~~

	We use the averaged voltage response as a function of CO<sub>2</sub> concentration:		We use the averaged voltage response as a function of CO<sub>2</sub> concentration:

2025-04-29T11:55:53Z

Results and Analysis

← Older revision		Revision as of 19:55, 29 April 2025
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	''Table: Raw voltage measurements across three groups''		''Table: Raw voltage measurements across three groups''

			According to the ideal gas law, the corresponding number of moles can be calculated:

			<center>'''<math>PV = nRT</math>'''</center>

			where
			\( P \) = pressure (in pascals, Pa),
			\( V \) = volume (in cubic meters, m³),
			\( n \) = number of moles (mol),
			\( R \) = ideal gas constant (8.314 J·mol⁻¹·K⁻¹),
			\( T \) = absolute temperature (in kelvins, K).

	We use the averaged voltage response as a function of CO<sub>2</sub> concentration:		We use the averaged voltage response as a function of CO<sub>2</sub> concentration:

2025-04-29T11:53:21Z

Results and Analysis

← Older revision		Revision as of 19:53, 29 April 2025
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	At a room temperature of 21.9°C and with a gas chamber volume of approximately 80 mL, three sets of voltage measurements were taken using a multimeter under identical pressure conditions.		At a room temperature of 21.9°C and with a gas chamber volume of approximately 80 mL, three sets of voltage measurements were taken using a multimeter under identical pressure conditions.

	<gallery widths="~~300px~~" heights="~~200px~~">		<gallery widths="500px" heights="350px">
	File:pressure.jpg\|Measurement of Pressure		File:pressure.jpg\|Measurement of Pressure
	File:voltage.jpg\|Measurement of Voltage		File:voltage.jpg\|Measurement of Voltage