3B Scientific Human Pulse Sensor Box User Manual

3B SCIENTIFIC
Human Pulse Sensor Box U11392
Instruction sheet
®
PHYSICS
1. Safety instructions
The human pulse sensor box is only intended for teaching purposes. The experimental data and recorder traces that are obtained must never be used for evaluating a person’s state of health.
Do not use the pulse sensor box as a diagnostic
instrument.
Do not use the pulse sensor box as an
instrument for monitoring the effects of therapeutic treatments.
The pulse sensor box and the 3B NETlog
only be used with a PC that conforms to the CE specifications, and in particular to the European standard EN 69950.
Do not open up or interfere with the pulse
sensor box under any circumstances.
The human pulse sensor box is constructed in accordance with the current safety regulations of protection class II, classification BF (body, floating earth).
TM
must
2. Description
Sensor box with attachable optical-electronic pulse detector (ear-clip consisting of an infra-red photoelectric sensor).
Provides automatic adjustment according to the signal strength (sensitivity adjustment) when measuring at the ear-lobes, at the base of the nail of the little finger, or on the surface of the skin between the thumb and forefinger.
The sensor box is detected automatically by the 3B
TM
NETlog
1 Sensor box 1 Infra-red pulse detector, cable length 1.20 m 1 MiniDIN 8-pin connector cable, 600 mm long 1 Instruction sheet for U11392
unit.
3. Equipment supplied
1
4. Technical data
Measurement range: 40–160 pulse beats/min Sensor type: Infra-red photoelectric
sensor in transparent optical capsule
Safety category: Protection class II, classification BF
Measuring the time for the pulse rate to return to the resting rate after physical activity.
Investigation of the pulse time difference at different positions in the body in relation to a reference measurement point, such as the base of the nail of a little finger. For this experiment use a second pulse sensor box and analyse the data using the 3B NETlab
5. Instructions
TM
software
7. Sample experiment
Place the sensor box near the person to be
tested.
Place the pulse detector on a part of the body
with a strong flow of blood, e.g., an ear-lobe or the base of the nail of a little finger.
During the measurement the person being
tested should sit still or stand.
Read off the sensor output voltage on the
display of the 3B NETlog
TM
unit.
6. Applications
Measurements of pulse rate when resting or during physical activity.
Observing changes in pulse rate during a heated discussion.
Measuring the pulse rate of a human guinea pig
Equipment needed: 1 3B NETlog 1 3B NETlab
TM
U11300
TM
U11310
1 Human pulse sensor box U11392
Set up the experiment as shown in Fig. 1.
Open the application program (template) for
the experiment with the pulse sensor box on the 3B NETlab
Start the program and select the pulse rate
TM
unit.
function.
On the trace obtained, use the two cursors to
measure the time interval that covers about 20 pulse beats (fig. 2).
Calculate the number of pulse beats per
minute.
Change the experimental conditions for the
guinea pig and repeat the experiment.
Fig. 1 Measurement of a person’s pulse rate
2
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