• Demonstrating the laws of state changes in gases experimentally.
  • Isothermic change of state, Boyle-Mariotte Law.


  • Experimental investigation of gas laws
  • Transparent measuring vessel  for investigation of isothermic change of stat.
  • Hydraulic oil filling for changing volume of test gas.
  • Built-in pump ensures necessary pressure differences to move the oil volume.
  • Compressor can also be used as vacuum pump.
  • 3/2-way valve for switching between compression and expansion.
  • Sensors for temperatures and pressures.

Knowledge of the gas laws is a fundamental requirement of any training course of in thermodynamics. The unit Boyle’s Law Apparatus enables the students to study changes of state of gas experimentally. Boyle’sLaw deals isothermic (Constant temperature) change of state. Air is used as a test gas and state of change is observed through a transparent vessel.

Familiarization with the gas laws is a fundamental requirement of any training course in thermodynamics. The apparatus enables changes of state to be studied experimentally: Isothermic change of state, also known as the Boyle-Mariotte Law. Transparent vessel enable the change of state to be observed. Air is used as the test gas.

In a vessel the enclosed air volume is reduced or increased using a pump and hydraulic oil. This results in an isothermic change of state. The pump can also operate as a vacuum pump. If the changes occur slowly, the change of state takes place at an almost constant temperature.

Temperature is measured electronically & pressure through pressure gauge.

Software TH-3103A SW (optional)
DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of apparatus. While using software a set of electronic sensors are included. Software can be run with any Windows™ environment