PASCO TD-8580A User Manual
Thermal Cavity
TD-8580A
2
TD-8580A
TD-8580A
INPUT POWER
INPUT POW
(10 VOLT MAX)
(10 VOLT MAX)
2
ER
1
1
THERMAL CAVITY
THERMAL CAVITY
Instruction Manual
012-09373B
5
5
6
6
3
3
Included Equipment Part Number
1. Thermal Cavity Assembly TD-8580
2. Cavity Plug 699-122
3. Thermistor Cable PS-2515
4. Base ME-9205
5. Thumbscrews (qty. 2) 617-015
6. Square Nuts (qty. 2) 614-054
7. CD-ROM: Experiment Configuration
Files for DataStudio 576-09345
Required Equipment
Power Supply, 10 V, 1 A CI-6552A, PI-9877, SE- 9720a, SF-9584A, or similar
10 kΩ Thermistor-type Temperature Sensor
or
Resistance Meter
1
See “Suggested Experiments” starting on page 3 for more information about the recommended
equipment and additional equipment required for the experiments described in this manual.
1
CI-6527A, PS-2125, or similar
SE-9786A
4
4
Introduction
The TD-8580A Thermal Cavity can be used in studies of thermal radiation, the Stefan-Boltzmann law, and
reflection and emission of light from different surfaces. The rotatable aluminum cube has a cavity and four different surface finishes: black, white, polished, and matte.
When powered by a stand-alone power supply or a Power Amplifier connected to a ScienceWorkshop interface,
the built-in heating element can raise the temperature of the cube to 100 °C. A thermistor embedded in the cube
allows the temperature to be measured with a PASPORT Temperature Sensor, a ScienceWorkshop Thermistor
Sensor, or a resistance meter.
®
Thermal Cavity Equipment Setup
With an Infrared Sensor students can examine IR light emission from each of the
cube's surfaces. The addition of a Light Sensor, Rotary Motion Sensor, Aperture
Bracket, and Linear Translator allows students to scan the cavity and generate intensity versus position graphs for visible and infrared light.
The apparatus can be mounted on the included rectangular base or on a PASCO Basic
Optics Bench.
Equipment Setup
Mounting on Included Base
1. Place the apparatus upright with the chassis (horizontal support piece)
on the base.
2. Align the outer hole in the chassis with the tapped hole in the base.
3. Insert a thumbscrew through the hole in the chassis and thread it into
the base.
Mounting on an Optics Bench
Mount the apparatus on a Basic Optic Bench for use with a Linear Translator, Aperture Bracket, and other optics equipment.
1. Slide both nuts into the center slot of the optics bench.
2. Align the holes on the chassis of the Thermal Cavity apparatus with
the nuts.
3. Insert the thumbscrews through the holes in the chassis and thread
them loosely into the nuts.
4. Move the apparatus to the desired position on the optics bench.
5. Tighten the thumbscrews.
Base
580
-8
TD
AL C
M
ER
H
T
INPUT POWER
(10 VOLT MAX)
TD-8580A
THERMAL CAVITY
INPUT P
(10 V
A
ITY
AV
R
E
OW
AX)
OLT M
Chassis
Thumbscrew
Thumbscrews
Nuts
Thermistor Sensor Connection
Use the included cable to connect the white pair of jacks labeled
“THERMISTOR SENSOR” to a ScienceWorkshop Thermistor Sensor, a PASPORT
Temperature Sensor, or the temperature port of the Xplorer GLX interface.
You can also use a stand-alone resistance meter or multimeter to read the temperature.
Measure the resistance between the white jacks and use the conversion formula on
page 7 to calculate the temperature.
Power Supply Connection
The Thermal Cavity requires a power supply capable of 10 V and 1 A.
1. Use two banana patch cords to connect the power supply to the red pair of jacks
labeled “INPUT POWER.”
2. Set the voltage as high as 10 V. The cube will reach 100 °C in about 30 minutes.
2
Optics Bench
IMPORTANT: Do not
apply voltage to the white
thermistor jacks.
®
Model No. TD-8580A Safety
Safety
CAUTION: The cube can reach 100 °C (212 °F). Do not touch the cube while
the apparatus is in use. Allow the apparatus to cool completely after use before
handling. Do not apply more than 10 V to the apparatus. Always monitor the temperature when the apparatus is in use. Do not allow the cube to exceed 100 °C. This
apparatus is intended for use by students only under instructor supervision.
Suggested Experiments
The configuration files called for in these activities can be found on the included
CD-ROM. There are three folders, each containing different versions of the files.
Refer to the table below to find the appropriate files for your equipment.
Equipment Folder containing configuration files
PASPORT PASPORT
ScienceWorkshop (without Power Amplifier) ScienceWorkshop
ScienceWorkshop with Power Amplifier SW with Power Amp
1. Infrared Light Intensity versus Temperature
In this experiment you will measure the IR intensity emitted by the cube as its temperature increases.
Required Equipment
Thermal Cavity TD-8580A
For use with PASPORT
Infrared Sensor PS-2148
Temperature Sensor PS-2125 or similar
PASPORT interface or interfaces
Power Supply, 10 V, 1 A PI-9877, SE- 9720a, SF-9584A, or similar
For use with ScienceWorkshop
Infrared Sensor CI-6628
Thermistor Sensor (10 kΩ) CI-6527A
ScienceWorkshop Interface See PASCO catalog or www.pasco.com
Power Amplifier
or
Power Supply, 10 V, 1 A
1
Any PASPORT temperature sensor compatible with thermistor temperature probes can be
used, including the Xplorer GLX’s built-in temperature port.
2
A multiple-port interface or combination of two single-port interfaces is required.
3
The Power Amplifier requires a ScienceWorkshop 750 or 700 interface.
3
2
See PASCO catalog or www.pasco.com
CI-6552A
PI-9877, SE- 9720a, SF-9584A, or similar
1
Setup
1. Mount the Thermal Cavity on the included base. Connect the Thermal Cavity to
the Thermistor Sensor and power supply (but don’t turn it on yet).
2. Connect both sensors to the interface (or interfaces).
1
3. Position the IR sensor on a stand or book so that its sensitive element is 2 cm
from the black surface of the cube.
®
1
If you are using a
ScienceWorkshop interface, connect the IR sensor to Channel A and the
Thermistor sensor to
Channel B; connect the
Power Amplifier (if used)
to Channel C; set the
gain of the IR Sensor
to 1.
3
Loading...