PASCO PS-2140 User Manual

CARD 1A

Temperature/Sound/Light Quick Start

Temperature/Sound Level/Light Sensor

PS-2140

Sensor Specifications:

Temperature (ambient)*

Range: -10 to 50 °C
Accuracy: ±2 °C
Resolution: 0.01 °C

Temperature (probe)**

Range:-35 to 135°C
Accuracy: ±0.5 °C
Resolution:0.01°C

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 por t. The range, accuracy, and
resolution of the probe temperature vary with the type of probe connected
to the sensor.

Light

Range: 0 to 5249 Lux
Accuracy: ±2 dB
Resolution: 0.1 Lux

Sound Level

Range: 40 to 90 dBA
Accuracy: ±3 dB
Resolution: 0.1 dB

The PS-2140 Temperature/Sound Level/Light Sensor simultaneously measures
temperature (in

°C, °F, or K), sound (in decibels), and light intensity (in lux).

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 por t 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.

1

2

3

®

800-772-8700 • 916-786-3800 • [e-mail] • www.pasco.com

Sample Data: Temperature, Sound Level, and Light
Intensity Changes inside a Refrigerator

temperature (0C)

compressor on

sound level (dBA)

compressor on

light intensity (lux)

compressor off

spike from refrigerator door opening

compressor off

refrigerator door opened

compressor on

compressor on

DataStudio/DS Lite Tasks: Procedure:

View the temperature, light and
sound in graphs:

Change measurements:

Scale to fit the data:

View data statistics:

From the Data list, drag the temperature,
sound, and light icons each to a Graph display.

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).

Click the Scale-to-Fit button.

On the main toolbar, click the Statistics button.

012-08533A

CARD 1B

Activity: Monitoring the Temperature,
Sound, and Light of Appliances

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.

Temperature/Sound Level/Light Sensor
Measurements and Operation

CARD 2A

Calibration Procedure

sound -
measures sound
on the weighted
dBA scale.

ambient temperature -

(mounted in side case)
measures the ambient
temperature (°C or °F).

Figure 1

Note: By default, the sound, ambient temperature, and light measurements

display when you first plug in the sensor. At any time, you may activate or
deactivate the display of any of the four measurements through DataStudio’s
PASPORT Setup window (Figure 2).

To a ctivate a specific
measurement, click
to place an “x” in the
box next to the
desired
measurement.

To stop the sensor from recording
a specific parameter, click in the
box to remove the “x.”

light - measures light
intensity (lux) in the
visible range of the
electromagnetic
spectrum.

probe temperature -
measures the temperature
(°C, F, K)

of a PASCO

probe connected to the side
port.

Figure 2

Calibration of the Temperature/Sound Level/Light Sensor is not generally required. If
you plan to take measurements with an external temperature probe, you may
calibrate the temperature probe with DataStudio. The ambient temperature, light, and
sound parameters

To calibrate the probe temperature (in DataStudio):

1. Plug the Temperature/Sound Level/Light Sensor into a PASPORT interface.

2. Plug the temperature probe into the external side port of the sensor.

3. In DataStudio, click the Setup button to open the PASPORT Setup window.

4. In the PASPORT Setup window, scroll to the Temperature/Sound Level/Light

box and click the Calibrate button.

WARNING: Do not place any par t of the Temperature/Sound Level/Light box in
water or other liquids. Placing the sensor box in liquids will permanently damage
the sensor.

5. Place the
The software is set to use 0°C and 100°C as the two points for calibration.
You may choose to enter your own values and use a thermometer as a
reference.) In the Calibration window, click the Set button.

6. Repeat steps 5-6 for the 100°C water (or your second point).

7. Click OK to save the calibration values.

are not set up for

temperature probe

calibration.

in the 0°C water (or your first point). (NOTE:

Collecting Data

1. Plug the Temperature/Sound Level/Light Sensor into a PASPORT interface.
Connect the PASPORT interface to a USB-compatible computer.

2. Place the sensor in the experimental setting or condition.

3. In DataStudio, open a Graph display and click the Start button to begin
recording data (See “DataStudio tasks” on Card 1B).

4. To end data collection, click the Stop button.

Sensor Usage Tips

CAUTION: To avoid damaging the sensor, do not place the
sensor in liquids, freezers, ovens, or fire. When placing the

sensor near electrical appliances, follow standard electrical
safety precautions in the classroom. PASCO does not cover the costs of
sensor replacements due to negligent or destructive use in the
classroom.

• The sensor can be used with most PASPORT temperature probes (i.e.
PS-2131, PS-2135, PS-2153).

• DataStudio software, version 1.8.5, contains workbook activities for use with the

Temperature/Sound Level/Light Sensor. When you plug the sensor into a USB
Link or PowerLink interface, a list of the workbook activities appears in the
PASPORTAL window.

• When using the Temperature/Sound Level/Light Sensor with an Xplorer for

prolonged monitoring (greater than 55 minutes), ensure that the Xplorer
contains new or charged batteries. To maximize battery life, connect the Xplorer
to a computer or Xplorer Power Adapter (PS-2530).

• Do not point the sensor directly at the sun for more than a few minutes.

• If connecting two or more Temperature/Sound Level/Light sensors to a

PowerLink, use channels 1 and 3 on the PowerLink. Placing the sensors too
close together may block either sensor’s external temperature port.

CARD 2B

Suggested Applications

• Studying general physical laws and concepts in science, such as light
absorption, sound acoustics, radiation, conduction, and convection

• Single parameter studies: comparing the light intensity emitted from the sun

at different times of the day; comparing the sound level emitted from various
sources (car horn, radio, voice, etc.); comparing the temperature of different
appliances, skin temperature of animals, etc.

• General physics studies exploring how sound, light, and heat relate to

energy

• Environmental, greenhouse, and ecological studies

• Comparing environmental conditions among various species of plants,

animals, or other microorganisms

• Comparing temperature, light, and sound from different electrical appliances