MEASURING RESISTANCE WITH ZET 7021 AND ZET 7121 DIGITAL SENSORS
The resistance measurement range is 450 Ohm.
If you need to measure a resistance over 400 Ohm, use the following connection circuit with Rbridge = 200 Ohm added.
It is important that this resistance is highly stable, i.e. its TCR ~ 10 ppm/°С
Set the ZET 7×21 digital sensor so that it outputs the resistance value in [Ohm]. On the ADС tab select Resistance.
Use the formula for calculating the equivalent resistance for resistances connected in parallel,
where X is a value measured by the ZET 7X21 digital sensor, as follows:
where X is a value measured by the ZET 7×21 digital sensor: