The specific heat ratio (adiabatic index) of air measurement is an important experiment in general physics at universities. Traditionally, the specific heat ratio of gas is measured by using an open u-shaped mercury or water manometer for gas pressure measurement, and a mercury thermometer for temperature measurement.
This apparatus uses a diffused Silicon pressure sensor to measure gas pressure and an integrated temperature sensor to measure temperature, leading to higher accuracy and sensitivity. It has obvious thermodynamic phenomenon. Experimental error is less than 3% as compared to the standard value. Using this apparatus, students can learn the principle and applications of an advanced Silicon pressure sensor.
Using this apparatus, the following experiments can be performed:
1. Measure the specific heat capacity ratio of air at constant volume and constant pressure
2. Observe thermodynamic process of air
3. Learn how to measure gas pressure and temperature
The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.
|Digital voltmeter||3-1/2 digits: pressure measurement; 4-1/2 digits: temperature measurement|
|Pressure sensor||diffused Silicon; range: 0-10 kPa; sensitivity: 20 mV/kPa|
|Temperature sensor||sensitivity: 1 µA/℃|
|Rubber Inflation Ball with Tube||1|
|Glass Bottle with Sensors & Wires||1|
1. Inlet Valve
2. Outlet Valve
4. Pressure Sensor
5. Temperature Sensor
Schematic of system
(Click figure to enlarge)