Hi all,
I am in process of developing a force sensor . This force sensor should be work till +/-20 N. So i have choosen load cell to develop this.
I made an instrumentation amplifier circuit using INA326 which would read 600mv at output when no load is applied. At maximum of +20 N (compresion) load it should read 1100 mv and on other side with -20N (tenstile) it should read 100 mv.
I faced while calibrating the sensor. When load cell was given the compresion force by specific weight e.g 200grm the output of amplifier gave me 660 mv and while the same weight was hanged on the load cell (tensitile force) it gave the output of 647 mv. A differene of 13 mv between the compression and tenstile force.
Whether the force sensor has different output on tenstile and compression force or its something with my circuit???
I am in process of developing a force sensor . This force sensor should be work till +/-20 N. So i have choosen load cell to develop this.
I made an instrumentation amplifier circuit using INA326 which would read 600mv at output when no load is applied. At maximum of +20 N (compresion) load it should read 1100 mv and on other side with -20N (tenstile) it should read 100 mv.
I faced while calibrating the sensor. When load cell was given the compresion force by specific weight e.g 200grm the output of amplifier gave me 660 mv and while the same weight was hanged on the load cell (tensitile force) it gave the output of 647 mv. A differene of 13 mv between the compression and tenstile force.
Whether the force sensor has different output on tenstile and compression force or its something with my circuit???