®
PS-2140
The PS-2140 Temperature/Sound Level/Light Sensor simultaneously measures
temperature (in
°C, °F, or K), sound (in decibels), and light intensity (in lux).
Temperature/Sound/Light Quick Start
Additional Equipment Needed
• PASPORT™ interface (USB Link, PowerLink, Xplorer, etc.) with USB-compatible
computer
• EZscreen or DataStudio
®
software (version 1.8.5 or later)
Equipment Setup
1. Connect the PASPORT interface to a USB port on your computer or to a USB hub.
2. Connect the Temperature/Sound Level/Light Sensor to the PASPORT interface. (If
using an Xplorer in the classroom, connect the Xplorer cable to your computer.)
3. The software launches when it detects a PASPORT sensor. Select a choice from the
PASPORTAL window.
800-772-8700 • 916-786-3800 • techsupp@pasco.com • www.pasco.com
012-08533A
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Temperature/Sound Level/Light Sensor
Sensor Specifications:
Temperature (ambient)*
Range: -10 to 50
°
C
Accuracy:
±
2
°
C
Resolution: 0.01
°
C
Light
Range: 0 to 5249 Lux
Accuracy:
±
2 dB
Resolution: 0.1 Lux
Temperature (probe)**
Range:-35 to 135
°
C
Accuracy:
±
0.5
°
C
Resolution:0.01
°
C
Sound Level
Range: 40 to 90 dBA
Accuracy:
±
3 dB
Resolution: 0.1 dB
Note: You can record two separate temperature measurements with this
sensor.
*Ambient temperature (in °C or °F) is automatically recorded and does not
require a probe.
**This refers to the probe temperature (in °C, °F, or K) for any probe
connected to the side temperature port. The range, accuracy, and
resolution of the probe temperature vary with the type of probe connected
to the sensor.
CARD 1A
Activity: Monitoring the Temperature,
Sound, and Light of Appliances
DataStudio/DS Lite Tasks: Procedure:
View the temperature, light and
sound in graphs:
From the Data list, drag the temperature,
sound, and light icons each to a Graph display.
Change measurements:
Click on the Setup button to open the
PASPORT Setup window. Scroll to the Temp/
Sound/Light box. Click to place a check next to
the desired measurement(s).
Scale to fit the data:
Click the Scale-to-Fit button.
View data statistics:
On the main toolbar, click the Statistics button.
Sample Data: Temperature, Sound Level, and Light
Intensity Changes inside a Refrigerator
Equipment required: PS-2140 Temperature/Sound Level/Light Sensor, PASPORT
Xplorer, DataStudio software (ver. 1.8.5 or later), refrigerator
Note: Ensure the Xplorer has new or fresh batteries. Check Xplorer’s battery level
before beginning the experiment. If the batteries are at 75% capacity or less, replace
the batteries or use a low sampling rate (1 to 2 samples/minute).
CAUTION: To avoid permanently damaging the sensor, do not place the
Temperature/Sound Level/Light Sensor in liquids, a freezer or oven, or near fire.
1. Plug the PS-2140 Temperature/Sound Level/Light Sensor into a PASPORT
Xplorer.
2. (Optional): Connect a Fast Response Temperature Probe (PS-2135) to the
side port and simultaneously measure the temperature in the freezer.
3. Place the Temp/Sound Level/Light Sensor into a refrigerator (on a shelf near
the light source), and press the Start/Stop button. Close the door to the
refrigerator. On a piece of paper, record the time you put the sensor into the
refrigerator.
4. Monitor the temperature, sound, and light for approximately 30 minutes to one
hour (or enough time for the compressor to turn on and off).
5. At 10 minute intervals, open the refrigerator door, check to see that the sensor
is functioning properly, and close the door.
6. After 30 minutes to one hour, open the refrigerator door, press the Start/Stop
button to end data collection, and remove the sensor.
7. Connect the Xplorer cable to your computer and open DataStudio. At the
DataStudio prompt, click the Retrieve Now button to display the data.
8. Describe the changes in temperature, light, and sound during the time that the
sensor was in the refrigerator. What light and sound did the sensor detect?
What caused the temperature change? Explain your conclusions.
9. Optional activity: Place the Temp/Sound Level/Light Sensor next to a
computer screen or television. Monitor the temperature, light intensity, and
sound level as you change the light intensity and sound volume controls.
spike from refrigerator door opening
light intensity (lux)
sound level (dBA)
temperature (
0
C)
refrigerator door opened
CARD 1B
compressor on
compressor off
compressor on
compressor on
compressor off
compressor on
(2 pages)
(3 pages)
(2 pages)
(2 pages)
(4 pages)
(3 pages)
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