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T e c h n i c a l S p e c i f i c a t i o n s f o r S e n s o r s
TI Light Sensor
The TI light sensor uses a phototransistor to measure relative irradiance. The units of
irradiance are milliwatts per square centimeter. The light sensor's output is a voltage
that is linearly proportional to the amount of irradiance it senses. The range of light
over which the sensor is sensitive is 10 W/cm
The
resistor in the sensor causes the CBL 2 software to automatically convert the
auto-ID
measured voltage to relative units. The sensor is direction dependent and achieves the
highest output when the end of the sensor is pointed directly at the light source.
The light sensor is sensitive in the visible and near-infrared (
you can use it with
is designed to work in air only—it is not waterproof.
The light sensor returns relative readings, not absolute irradiance readings. Values may
vary from light sensor to light sensor. The light sensor readings are also sensitive to
temperature.
TI Light Sensor Specifications
Channels
Current drain
Voltage range
Irradiance range
Spectral response range
Chemical tolerance
Pins used
Stainless Steel Temperature Sensor
The Stainless Steel Temperature Sensor is an auto-ID general-purpose laboratory
temperature sensor that comes with your CBL 2. The sensor is rugged and durable, and
is designed to be used as you would use a thermometer for experiments in chemistry,
physics, biology, earth science, and environmental science.
10
emitting diodes as well as all visible light sources. The light sensor
IR
Connects to
channels)
5 mA max.
0–5 Volts
10 W/cm
300nm to 1100nm (nanometers) (non-flat
response)
None (air only)
2
4
5
6
2
2
to 1mW/cm
.
IR
,
,
CH1
CH2
CH3
2
to 1mW/cm
2
(approximately)
ground
auto-ID resistor
+5 Volts DC
Signal
CBL 2 Technical Reference
) light range. This means
(analog
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