PicoStrain: Strain Gauge / Load Cells
The K-factor of strain gages depends on temperature and decreases with
higher temperature. If the temperature of the strain gage is known, it
is easy to correct for the main failure (active temperature
PS021 offers the option of temperature measurement with an external temperature sensitive resistor.
General Circuit Features
Basically the temperature measurement is nothing more than a simplified
SG measurement at separate ports. A measurement takes 2
discharge/recharge cycles and is done once per measurement sequence.
In the first cycle the capacitor is discharged through the temperature
sensitive resistor. The nominal value of the resistance should be
minimum 500 Ohm. In the second cycle the capacitor is discharged through
a temperature stable reference resistor.