3B Scientific Skin Resistance Box User Manual
3B SCIENTIFIC
Skin Resistance Box U11393
Instruction sheet
03/08 Hh
®
PHYSICS
1. Safety instructions
The skin resistance 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 skin resistance box as a
diagnostic instrument.
• Do not use the skin resistance box as an
instrument for monitoring the effects of
therapeutic treatments.
• The skin resistance box and the 3B NETlog
must 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 skin
resistance box under any circumstances.
The skin resistance box is constructed in
accordance with the current safety regulations of
protection class II, classification BF (body, floating
earth).
TM
2. Description
Sensor box for measuring the skin resistance of a
human guinea pig under the influence of internal
and external factors, e.g., under stress, after a
frightening event, or in the course of autogenic
training.
It can also demonstrate the principle of the “lie
detector”.
The instrument gives a reading for skin resistance
(“Sres”) in megohm units (MΩ).
The sensor box is detected automatically by the 3B
TM
NETlog
1 Sensor box
1 Electrode cable including metal electrodes on
1 MiniDIN 8-pin connector cable, 600 mm long
1 Instruction sheet for U11393
unit.
3. Equipment supplied
Velcro bands, length 1 m
1
4. Technical data
7. Sample experiment
Measurement range: 1 MΩ – 10 MΩ
Sensor type: 2 Metal electrodes, clipped
to Velcro bands
Safety category: Protection class II,
classification BF
5. Instructions
• Place the sensor box close to the person being
tested.
• Using the two Velcro fasteners, attach the
Measuring the skin resistance of a person
Equipment needed:
1 3B NETlog
1 3B NETlab
1 Skin resistance box U11393
• Set up the experiment as shown in Fig. 1.
• Open the template for the experiment with a
• Run the program in the template so that the
metal electrodes to the undersides of the
person’s forefinger and middle finger on one
• Investigate how skin resistance is affected by
hand at the tips.
The person’s hand should be resting in a relaxed
state on a support.
• Read off the value of the skin resistance on the
display screen of the 3B NETlog
TM
.
• Change the experimental conditions for the
• Analyse the results of the experiment.
6. Applications
Measurements of the skin resistance when the body
is relaxed, and then during an “emotional” event
Use of the skin resistance box as a “lie detector”
TM
U11300
TM
U11310
skin resistance box in the 3B NETlab
TM
software.
value of the skin resistance and any changes in
it are recorded (Fig. 2).
the types of events described under heading 2,
“Description”.
guinea pig and repeat the experiment.
Fig. 1 Measuring skin resistance of a person
2
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