User manual

Hukseflux Thermal Sensors
HFP01SC Manual v0811 page 27/33
8 Requirements for data
acquisition and control
Capability to measure
microvolt signals (sensor
signal)
5 microvolt resolution or better
Capability of measuring
currents
Around 0.1A, with 1% accuracy,
typicaly perfromed by using a 10
Ohm resistor and measurement
of the voltage across this
resistor.
Capability of switching 9-15 volt at 0.1 A (this is for one
sensor only, worst case)
Requirements for power
supply of the heater
Capability to supply 9-15 Volt, at
0.1 A
In meteorological applications,
this is typically done for 3
minutes every three or six
hours, depending on the
available power.
The average required power
across the day in this case is
0,02 and 0.04 Watt respectively.
Capability for the data logger
or the software
To store data, to subtract and to
perform the calculations.
Table 8.1 Requirements for data acquisition and control.