Ideal Gas Law Apparatus
TD-8596A
2
012-08420B
*see www.pasco.com
Introduction
The Ideal Gas Law Syringe allows simultaneous measurements of temperature and pressure of a gas as it is compressed.
A low thermal mass thermistor is built into the end of the syringe to measure temperature changes inside the syringe. The
response time is around a half of a second. The plunger is equipped with a mechanical stop that protects the thermistor,
and also allows for a quick, predetermined change in volume. The temperature connector, a mini stereo jack, connects
directly to a temperature sensor, and the pressure connector, a quick-release connector, attaches directly to a pressure
sensor. As the plunger of the syringe is depressed, the volume decreases while pressure and temperature increase.
Equipment Setup
Plug the mini stereo jack into the temperature sensor. Connect the quick-release connector to the
pressure port on a pressure sensor as shown. This white plastic connector can be disconnected and re-
connected during the experiment to allow for different initial plunger positions.
NOTE: If you are using a PASCO Wireless Pressure Sensor (PS-3203), make a short adapter tube. The
Wireless Pressure Sensor includes two male Luer connectors and a piece of plastic tubing. Cut a piece
of tubing abut 3 centimeters long. Lubricate the barb ends of both male Luer connectors with a very
small amount of glycerin. Push the barb ends of both Luer connectors into opposite ends of the short
piece of tubing.
On the Ideal Gas Law Apparatus, remove the short plastic tube by unscrewing the male Luer connector from the base of
the syringe. Connect the new adapter between the female Luer connector on the syringe and the pressure port on the
Wireless Pressure Sensor.
Additional Items Required or Recommended
PASCO Interface and Data Collection Software*
PASPORT Pressure/Temperature Sensor (PS-2146)
or
PASPORT Pressure Sensor (PS-2107) or Wireless Pressure Sensor (PS-3203)
and
PASPORT Temperature Sensor (PS-2125 or the equivalent)
OPTIONAL: PASPORT Sensor Extension Cable (PS-2500)
Male Luer
connector*
Plastic tubing*
Sensor
Male Luer
connector*
To Ideal
Gas Law
Syringe
Pressure Port
(*Items included with
Wireless Pressure Sensor)
