Pasco TD-8580A Thermal Cavity Manuel d'utilisateur télécharger pdf (Page 7)

Model No. TD-8580A Sample Data

Sample Data

DataStudio files containing these data can be found on the included CD-ROM.

Infrared Light Intensity versus Temperature

The graphs above show I versus T (above left) and I

versus T

(above right) for the black surface. The

curve fit applied to I versus T is ; note

that the curve intersects the horizontal axis at

, the approximate temperature of

the sensor.

The graphs of I versus T for the different surfaces of

the cube (right) show that the black and white surfaces

have similar emissivities in the IR region of the spec-

trum, and the emissivity of the polished surface is

much lower.

Reflected Visible Light and Emitted Infrared Light

These graphs show visible light intensity versus posi-

tion (top right) and IR light intensity versus position

(bottom right) at 92 °C. In the visible region of the

spectrum, the cavity is darker than the surrounding

cube surface; in the IR region the cavity is brighter.

Resistance to Temperature Conversion

To find the temperature (T) measured in kelvin based on the resistance (R) of the

embedded thermistor measured in kΩ, use the formula:

IAT

× B+=

T 294 K 21° C==

--- AB

------





ln⋅ C

------





⋅ D

------





⋅++ +=

1 2 3 4 5 6 7 8

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Pasco TD-8580A Thermal Cavity Manuel d'utilisateur Page 7