Thermodynamics – Gas Law
Adiabatic Gas Law Apparatus
Compression Igniter
TD-8565
TD-8577
A I nvestigate the Compression of Gases
A Adiabatic compression ignites paper!
A C omputer Monitors Temperature, Pressure and Volume
A Durable and cleanable
Volume Transducer
A linear potential divider monitors the position of the piston.
Students will be amazed to see the paper catch on fire without a match.
A Works every time Put a small piece of tissue paper into the cylinder and quickly push down on the piston. In a quick compression there is no time for heat to be exchanged between the air inside and its surroundings, causing the temperature to rise well above the combustion temperature of paper.
Plastic Safety Shield Precision Glass Tube Three Signal Cables
Carry the volume, pressure and temperature signals to the computer.
Temperature Sensor
Optional Force Platform
Measures rapid changes in temperature as the resistance of a fine nickel wire changes.
Piston
DataStudio monitors pressure, temperature and volume as a gas is compressed rapidly.
Bottom Experiments PASCO’s Adiabatic Gas Law can be used with the ScienceWorkshop Interface. The computer functions as a 3-channel storage oscilloscope, plotting graphs of pressure, temperature and volume as well as integrating the area under a pressure versus volume curve to determine the work done on the gas.
Includes: Adiabatic Gas Law Apparatus Instruction manual, experiment guide Signal Cables: (3.5 mm plug to 5-pin DIN) Power Adapter: 9V DC @ 1A Order Information: Adiabatic Gas Law Apparatus....................TD-8565 Required: A computer with an interface that will accept three analog signals simultaneously via 5 or 8-pin DIN connectors such as: PASCO’s ScienceWorkshop 500 and 750 Interfaces.
Easy Cleanout
This Compression Igniter has been specially designed to be cleanable. The bottom screws off to clean out the soot and to load the paper. The large piston handle decreases the pressure on your hand and makes it easier to hit the piston quickly. The glass tube is surrounded by plastic for safety, and in the event that the glass tube breaks, the glass tube can be replaced.
Includes: Compression Igniter
Pressure data is calculated using the force measured by the Force Platform. The data shown in the above graph gives (assuming adiabatic) a compression ratio of nearly 20:1, and a peak temperature of over 700 oC.
Spare Glass Tube with “O” Rings Cleaning Wire Complete instructions with theory
Order Information: Compression Igniter. ................................. TD-8577 Replacement Tubes (2). ........................... TD-8498 Shown in use with: Force Platform PASPORT................................................................... PS-2141
p. 31
Force Platform ScienceWorkshop.......................................... CI-6461
p. 76
235