User manual

Hukseflux Thermal Sensors
HFP01SC Manual v0811 page 4/33
List of symbols
Heat flux ϕ Wm
-2
Thermal conductivity λ W/m.K
Voltage output V V
HFP01SC sensitivity (factory value) E
sen
μV/Wm
-2
HFP01SC sensitivity (newly found value) E
sen2
μV/Wm
-2
Thermal conductivity dependence of E
sen
E
λ
mK/W
Time t s
Surface area A m
2
Deflection error (+ when ϕ is overestimated) X %
Electrical resistance R Ω
Thermal resistance R
th
Km
2
/W
Measurement at t is 0, 180 seconds (0), (180)
Difference before and during heating Δ -
Subscripts
Property of thermopile sensor sen
Property of air air
Property of the current sensing resistor cur
Properties of the heater for self test self
Amplitude amp
Property during calibration cal