Hi everyone,
I am in process of developing a force sensor with the range of +/- 20N. For this i have selected load cell as a sensor from Joint Sensor Instruments (szjoint.com).
The part i have selected is CZS - 101 which can uphold upto 50 lbs of weight. I want to have the circuit idea for getting the output from it. The o/p will be from 100mv - 1100 mv. (600 mv for 0 N).
Also i should have a calibration option so that the zero drift should be omited. Can anybody help me with the schematic and its functioning.
I suppose, i should have a differential amplifier with one terminal always at some reference mv and other tied to the mesauring sensor. The o/p range can be selected with proper gain. But what about calibrating for 0 lbs. If i keep a DAC which will adjust the o/p to 600 mv at 0 lbs with some count, then what should be done with these count value. Whether these count value should be added or subtracted from the final value???
I am in process of developing a force sensor with the range of +/- 20N. For this i have selected load cell as a sensor from Joint Sensor Instruments (szjoint.com).
The part i have selected is CZS - 101 which can uphold upto 50 lbs of weight. I want to have the circuit idea for getting the output from it. The o/p will be from 100mv - 1100 mv. (600 mv for 0 N).
Also i should have a calibration option so that the zero drift should be omited. Can anybody help me with the schematic and its functioning.
I suppose, i should have a differential amplifier with one terminal always at some reference mv and other tied to the mesauring sensor. The o/p range can be selected with proper gain. But what about calibrating for 0 lbs. If i keep a DAC which will adjust the o/p to 600 mv at 0 lbs with some count, then what should be done with these count value. Whether these count value should be added or subtracted from the final value???