3B Scientific Radiation of Heat__Thermopile - Manual (Page 3)

3B SCIENTIFIC® PHYSICS
1
Thermopile 8441301
Instruction sheet
07/06 SP
1 Inlet (funnel)
2 Shaft
3 Metal housing
4 Measurement output (4-mm safety connec-
tors)
1. Description
The thermopile is a highly sensitive apparatus used
for measuring radiation (e.g. heat radiation from
black bodies, reflection of long-wave heat radiation).
Integrated in a metal housing with a polished funnel,
the thermopile consists of a black surface of 15 mm
diameter to which 17 thermocouples are connected.
The thermocouples generate a thermoelectric poten-
tial U which is proportional to the intensity of the
incident heat radiation.
2. Technical data
Sensitivity: 0.28 mV/
µW approx.
Setting time: 40 s for 95% of the meas-
ured value
Black surface: 15 mm
∅
Internal resistance: 1
Ω
Connections: Two 4-mm safety connec-
tors
Dimensions: 94 mm x 40 mm
∅
Shaft: 10 mm
∅
Weight: 200 g approx.