Hello,
I'm working on an application where I'll be monitoring the impedance of cells in vitro using custom external electrodes in a 4-wire setup with a target frequency range of 100Hz (or lower) to 100kHz. Initial measurements of the 2000 ohm test resistor in the resistor bank had the attached results
What parameters in SensorPal can I adjust to improve measurement accuracy?
To use SensorPal to do a 4 wire impedance measurement use the Body Impedance technique. Increase the Digital Filter Settings and DFT number to optimize the accuracy at lower frequencies.
None - means SINC3 and SINC2 filter is bypassed
Level 1.1 means Sinc3 setting is 2
Level 1.2 means Sinc3 filter is 4
Yes, SensorPal is configured for the range 100Hz to 200kHz for body impedance measurement. There are firmware examples available where you will have more freedom over the excitation frequency. Check out…