PASCO TD-8592 SMALL PISTON HEAT ENGINE APPARATUS - Manual (Page 14)

012-08375A Small Piston Heat Engine
9
HEAT ENGINE GAS LAW APPARATUS
Piston Dia.: 32.5mm±0.1
TD-8572
CAUTION: Max. Pres.: 345 kPa. Use Gases Only DO NOT Immerse in any Liquid DO NOT Lubricate Piston or Cylinder
Pressure Port Mating Connector: PASCO Part No. 640-021
Piston&Platform Mass: 35.0g±0.6
PRESSURE SENSOR 0-700 kPa (ABSOLUTE)
CI-6532
PRE SSU RE POR T 700 k Pa M AX
DRY AIR ON LY
PRE SSU RE P ORT MAT ING CO NNE CTO R: PAS CO PAR T NO . 640 -021 INTE RFA C E PAS CO PAS CO
6500 SER IE
TO INTE RFA CE
Tighten the
piston-holding
thumb screw.
hot plate
Temperature
Sensor
Gas Law Apparatus
to
computer
interface
Equipment Required:
• Small Piston Heat Engine
• Pressure Sensor (CI-6532)
• Science Workshop
®
computer interface*
• Temperature Sensor (CI-6505)
• Hot plate
• Beaker with water
• Ice
Experiment 4: Combined Gas Law (Gay-Lussac’s )
*For details on setting up and operating the Pressure Sensor and Temperature Sensor with DataStudio
software, please see the instruction sheets for the Pressure and Temperature Sensors and the
DataStudio online help.
Theory
Charles’ law states that the volume,V, is proportional to the temperature, T. Boyle’s law states that the volume,
V, is proportional to the pressure, P, where pressure=1/P. Combining these, we have:
V =
aT
P
The combined gas law predicts that for a given mass of gas, if V is held constant, P is proportional
to T.
➀
Secure the piston just above its lowest
position by tightening the thumb screw.
➁
Connect the Pressure Sensor to a port on the
base apparatus with a short piece of tubing.
➂
Connect the air chamber fitted with the
two-holed stopper to the other port of the base
apparatus with a piece of tubing.
➃
Insert the Temperature Sensor into the other
hole of the rubber stopper.
Setup
Figure 4.1. Experiment Setup
Pressure
Sensor
To computer interface
Use a silicon lubricant on the end of
the Temperature Probe to aid insertion
and to prevent damage to the probe.
➤ Note: You can substitute a thermometer in the water container for the Temperature Sensor.
Be sure to keep the tip of the thermometer from touching the bottom of the container.
➄
Connect the Pressure Sensor and Temperature
Sensor to the computer interface, and set up the
DataStudio software program to graph tempera-
ture versus pressure.
• DataStudio software