PASCO TD-8555 THERMAL RADIATION SYSTEM - Manual (Page 14)

10
Thermal Radiation System 012-04695D
X Rad 1/X 2 Rad - Ambient
(cm) (mV) (cm -2 ) (mV)
2.5
3.0
3.5
4.0
4.5
5.0
6.0
7.0
8.0
9.0
10.0
12.0
14.0
16.0
18.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
90.0
100.0
ä IMPORTANT: Do not let the voltage to the lamp exceed 13 V.
④ Adjust the distance between the Sensor and the lamp to each of the settings listed in Table 2.2.
At each setting, record the reading on the millivoltmeter.
ä IMPORTANT: Make each reading quickly. Between readings, move the Sensor away
from the lamp, or place the reflective heat shield between the lamp and the Sensor, so that
the temperature of the Sensor stays relatively constant.
Table 2.2
Radiation Level versus Distance
X Ambient Radiation Level
(cm) (mV)
10
20
30
40
50
60
70
80
90
100
Table 2.1
Ambient Radiation Level
Average Ambient
Radiation Level =