Features Specifications

Operation with negative pressure and positive pressure
Precise pressure measurement
Experiments according to Clément-Desormes

Gas laws belong to the fundamentals of thermodynamics and are dealt with in every training course on thermodynamics.
Expansion of Ideal Gasses Apparatus 32384 enables the user to examine the expansion of ideal gases. The focus is on the experimental determination of the adiabatic exponent of air using the Clément- Desormes method.
The main components of the experimental unit are two interconnected cylindrical tanks. Positive pressure can be applied to one tank, negative pressure can be applied to the other tank. To generate the positive pressure and the negative pressure in the tanks, the tanks are connected to each other via a compressor. The pressure equalization can either take place with the environment or with the other tank through a bypass. Due to the high velocity of the pressure compensation the change of state is quasi adiabatic. Ball valves are used for pressure equalization.
Precise pressure measurement technology is integrated in the tanks to enable the determination of the adiabatic exponent using the Clément-Desormes method. The measured temperatures and pressures are recorded, transmitted to the software and displayed.
Optional DAQ software of 32384 offers all the advantages of software-supported experimental procedure and analysis.
Experimental investigation of gas laws
Transparent measuring tank 1 for investigation of isothermic change of state
Hydraulic oil filling for changing volume of test gas
Built-in   compressor   generates   necessary pressure differences to move the oil volume
Compressor can also be used as vacuum pump
5/2-way valve for switching between compression and expansion
Transparent measuring tank 2 for investigation of isochoric change of state
Electrical heater with temperature control in tank 2
Sensors and digital displays for temperatures, pressures and volumes
Optional DAQ software with control functions and data acquisition via Windows 7

Technical Specifications
Compressor / vacuum pump - power output: 60W
Pressure at inlet: 213mbar
Pressure at outlet: 2bar
Temperature controller: PID, 300W, limited to 80°C
Measuring ranges
Temperature
- Tank 1: 0...80°C
- Tank 2: 0...80°C
Pressure
Tank 1: 0...4bar absolute
Tank 2: 0...2bar absolute
Volume
- Tank 1: 0...3L

Optional DAQ Software & Sensors Level sensor:
Type: capacitance type

MOC: S.S 316
Total height: 540mm
Output: 4-20mA Analog signal
Pressure sensor:
Type: Capacitive type
Range: 0 to 4 Bar Gauge
Qty: 02nos
Output: 4-20mA Analog signal
Temperature controller:
Qty: 01nos Temperature sensor: Ÿ Type: Resistive type
Model: PT100
Range: 0 to 400o C
Qty: 03nos
DAQ device:
Make: SCITECH
Analog channel: 15nos
Digital channel: 45nos

Screenshots:
Isothermal change of state by Boyle-Mariotte law    Isochoric change of state by Gay-Lussac’s law

Experiments
Determination of the adiabatic exponent according to Clément-Desormes
Isothermal change of state by Boyle-Mariotte law
Isochoric change of state by Gay-Lussac’s law
Idiabatic change of state of air
Isochoric change of state of air

Requirements
Mains Power 220 – 240V @ 50Hz, 1Ph