User manual

Hukseflux Thermal Sensors
HFP01SC Manual v0811 page 30/33
10 Programming for HFP01SC
The central formula is:
E
sen 2
= 2V
amp
(R
2
cur
.A
self
)/(V
2
cur
.R
self
) 1.4.4
R
self
and A
self
are given on the sensor calibration certificate. R
cur
is user supplied.
The soil heat flux is calculated as:
ϕ
= V
sen
/ E
sen2
1.4.6
Possible quality assurance tests are:
1: E
sen2
< 0.8 E
sen
2: E
sen2
> 1.05 E
sen
3: V
sen
(0) - V
sen
(360) < 0.1 V
amp
In case the heater is not connected, one can work with HFP01SC
as if it were a normal heat flux plate, using formula 1.4.6 in
combination with E
sen
as supplied on the sensor calibration
certificate.