Respiration Quick Start
CARD1A
Respiration Rate Sensor
PS-2133
Sensor Specifications
Sensor Range:
Resolution:
Accuracy:
Repeatability:
Maximum Sample Rate:
Operating Temperature:
Relative Humidity Range:
The specifications apply to the PS-2114 Relative Pressure
Sensor, which is part of the Respiration Rate Sensor.
*Note: Condensation on the sensor may reduce the sensor’s
measurement accuracy.
0 to 10 kPa
0.001 kPa
±
0.5 kPa
0.01 kPa
20 samples per second
0–40°C
5–95%, non-condensing*
The PS-2133 Respiration Rate Sensor measures breath rate in one-minute cycles.
The Respiration Rate Sensor includes a Relative Pressure Sensor and inflatable belt,
which wraps around the chest. As the person breathes, respiration rate and pressure
changes can be displayed in a graph on a computer.
Additional Equipment Needed
•PASPORT™ USB interface (USB Link (PS-2100) with USB-compatible computer or a
PS-2000 Xplorer)
•DataStudio
®
software, version 1.8 or later
Equipment Setup
1. Connect the USB Link to a USB port on your computer or to a USB hub. (If using the
Xplorer as an interface in the classroom, connect the Xplorer cable to the USB port on
your computer.)
2. Wrap the Respiration belt below your rib cage and connect the Respiration Belt tubing to
the Relative Pressure Sensor. (See card 2A for proper instructions and safety information.)
3. Connect the Relative Pressure Sensor to the USB Link.
4. The software launches when it detects a PASPORT
1
2
TM
sensor. Select a point of entry.
3
4
!
800-772-8700 • 916-786-3800 • techsupp@pasco.com • www.pasco.com
Respiratory Rate: Resting vs. Exercise
DataStudio/DS Lite Tasks:
Create an equation for measuring respiration rate in
DataStudio:*
Record the respiration rate
and/or waveform:
Click on the Calculator ( ) button to open
the Calculator dialog. Click the New ()
button. Type in respiration rate=60/period
(30,30,5 relative pressure).
From the D ata list, drag the respiration e quation
and Relative Pressure icon to a display.
012-08370A
CARD 1B
Respiration Activity
1. Wrap the respiration belt around your rib cage. (Follow the instructions for
“Wearing the Respiration Belt” on card 2A.)
2. Use the quick-release connector on the end of the belt’s tubing to connect the
belt to the Relative Pressure Sensor.
3. Connect the Pressure Sensor to a PASPORT interface.
4. When the PASPORTAL window opens, select the Respiration workbook or
configuration file. [Note: If you don’t have have version 1.8 of DataStudio,
launch DataStudio, create an experiment, and follow the instructions in the
table to the left for creating the respiration rate equation.]
5. Ensure the valve to the squeeze bulb is closed. Inflate the belt until the belt
fits snugly against your chest.
warning and instructions on card 2A.)
6. On page 4 of the workbook, click the Start ( ) button to record the
respiration rate. Collect respiration rate data with (a) the student sitting,
standing, and lying down and (b) before and after exercise.
7. (Optional): Remove the belt. Collect pressure data with the student breathing
through a plastic tube connected to the Pressure Sensor. (See card 2B).
**
8. Analysis: Compare the change in respiration rate with different body
positions and before and after exercise. Examine pressure changes for
inspiration and expiration.
*
(Do not overinflate! Please read the safety
*
In the respiration activity, the respiration equation is already created for you.
**
Use the Special button and menu to select the per iod function and replace the
(10,10, x) values with (30,30,5). Under Variables, click on Data Measurement;
then click on Relative Pressure and OK. Click the Accept button to accept the
equation.
Other Experiment Suggestions
• Respiration rate vs. heart rate
• Respiration rate and body temperature (cold vs. hot environments)
• Respiration rate and pressure changes with different types of
exercise (aerobic, we ight lifting, e tc.)
• Respira tion rate and pressure chan ges ( breath ing vs. breath holding
vs. forced expiration)
• Respiration rate at sea level vs. altitude
Wearing the Respiration Belt
1. Wrap the right portion of the belt
(the side with the tubes) around
your chest (the lower part of your
rib cage). The hook-and-stick
strips should face away from your
chest.
2. Wrap the left half of the belt over the
right part, so that the hook-andstick
straps stick to each other. The
belt needs to fit snugly around the
rib cage, but not so tight that
breathing becomes restricted (See
Figures 1 and 2).
Wrap this
end first.
Figure 1
Belt Safety Instructions - Please Read!
WAR NING : Do not inflate or wear the belt beyond an individual’s
comfort level. Overflating the belt or wearing the belt too snugly could
cause excessive pressure against the chest or abdominal cavities,
Overinflation may also tear the bladder belt. When inflating the belt, squeeze the
bulb slowly and allow adequate space for comfor table breathing to take place (at
least one-finger width between the belt and body surface). If the belt is
uncomfortable, unwrap the hook-and-stick straps and remove the belt. To deflate
the bladder, turn the knob on the squeeze bulb counterclockwise to deflate the
bladd er. Before using th e product, inform your students of the hazards of
overinflati ng the belt and show students how to properly inflate, deflate, and
remove the belt. PASCO cannot be held responsible for unsafe usage in the
classroom.
etc., resulting in possible bodily injury or harm to internal organs.
!
800-772-8700 • 916-786-3800 • techsupp@pasco.com • www.pasco.com
CARD 2A
Collecting Respiration Data
1. Wrap the respiration belt around
the lower part of your chest.
2. Push the quick-release connector
on the tubing of the Respiration
Belt into the port of the Relative
Pressure Sensor. Turn the
connector clockwise until it clicks
into place.
3. Connect the pin connector on the
Relative Pressure Sensor to the
interface (i.e. USB Link, etc.).
[Note: The Xplorer can be used
for collecting pressure data, but
not respiration rate data. (For pressure studies, see the reverse side of
this card).]
4. On the squeeze bulb, turn the knob fully clockwise to close the valve.
5. Squeeze the bulb 10-20 times to inflate the rubber bladder. (WARNIN G:
Do not overflate!
of this card.) When the bladder is inflated, the belt will feel more snug
against your chest.
6. In DataStudio, use the Calculator dialog to create an equation for the
respiration rate (See detailed instructions on card 1B.)
7. To begin collecting data, click the Start button. To stop data collection,
click the Stop button.
8. To deflate the belt, turn the knob on the squeeze belt counterclockwise to
open the valve. Use your hands to push air out of the bladder. To
disconnect the quick-release connector from the pressure port, turn it
counterclockwise.
Please see read the safety instructions on the left side
belt
squeeze
bulb
Figure 2
Pressure
Sensor
012-08370A
Recording Lung Pressure Changes
with the Respiratory Sensor
Yo u c a n d i r e c t l y m e a s u r e t h e i n s p i r a t o r y a n d e x p i r a t o r y p r e s s u r e s b y h a v i n g t h e
students breathe through a plastic tube (using the tubing and connectors
provided) connected to the Relative Pressure Sensor. Remove the Pressure
Sensor from the belt, connect it to the plastic tubing, and have a student breathe
through the tube. The lung pressure (in the
lungs) normally drops about 1 mm Hg during inspiration and rises about 1 mm
Hg during normal expiration. (WARNING: Sucking directly from the tube is not
recommended, because it would create a vacuum effect in the sensor.
a health precaution, always remember to wash and/or disinfect the tubing and
connectors before and after use or between students.)
Note: When the belt is connected to the Relative Pressure Sensor, the Pressure
Sensor measures the pressure in the bladder of the belt as the lungs expand and
contract. The pressure of the lungs and chest cavity expanding causes pressure
against the bladder of the belt, but the pressure measured is not the actual
pressure change in the lungs. (Any positive pressure change in the belt
corresponds to a negative pressure change in the lungs and vice versa.)
alveoli
, the air-filled sacs in the
Also, as
Pressure Changes During Respiration
The movement of the diaphragm facilitates
respiration by changing the size of the chest
cavity. During inspiration, the lungs expand
with air, and the diaphragm moves down in
the abdominal cavity, increasing the space
and decreasing the pressure in the chest
cavity (Figure 3). During expiration, the
pressure in the lungs is higher than the
atmospheric air pressure, and the lungs
recoil to expel the air, while the diaphragm
moves up toward the chest cavity.
lungs
diaphragm
muscle
Figure 3
CARD 2B
Sample Pressure Data with the Respiratory Sensor
Respiration Sensor Usage Tips
1. Do not use the Pressure Sensor around liquids or beverages.
Also, be careful not to get water or other liquids in the squeeze
bulb, tubing, or bladder of the belt. Liquids will permanently
damage the sensor and will also interfere with proper inflation of
the bladder in the belt.
2. Before each data run, ensure that the valve to the sqeeze bulb is
completely closed. If the valve is left partially open, the release of
air from the belt could skew data results.
3. To ensure measurement consistency, before each data run, check
to ensure that the pressure in the belt is at the same baseline
starting level.
4. When using the sensor with a PASPORT Xplorer, only pressure
data will appear on the Xplorer display screen. Respiration rate
Rate data does not display on the Xplorer.
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