Adiabatic Gas Law apparatus

Picture of the Adiabatic Gas Law apparatus

The Adiabatic Gas Law apparatus is the perfect tool for teaching confusing thermodynamic processes. The Adiabatic Gas Law apparatus simultaneously measures volume, pressure and temperature, completely specifying the state of the gas. The gas can be rapidly compressed or expanded, creating nearly adiabatic conditions. Alternately, processes can be performed slowly, creating isothermal conditions.

Transducer Specifications
Volume Transducer: A linear potential divider is mounted on the side of the piston. A 5-Volt source from the computer is applied across the potentiometer element. The voltage from the commutator brush on the cylinder is used to indicate the position of the piston and the volume of the confined gas.
Pressure Sensor: A solid-state, piezoresistive device that forms part of a bridge circuit is mounted at the base of the cylinder.
Temperature Sensor: Mounted in the cylinder on the top of the base. The active element is fine nickel wire with a high surface-to-mass ratio. The wire's temperature and resistance change rapidly as the gas compresses or expands.
Requirements
Computer Interface:
  • 3 analog input channels with female 5-pin DIN connectors or suitable adapters
  • 500 samples/s simultaneous sample rate on all channels
  • 0-5V input range
TEL-TD1000 Adiabatic Gas Law Apparatus $870