I need a load cell amplifier schematic with following specs:
1 - Bridge input sensitivity 2mv/V and 3mv/V selectable
2 -10V excitation voltage
3 - 24VDC power (negative power supply if needed must be generated on board)
4 - Output 0-10V or 4-20mA (selectable)
5 - Offset and gain with coarse and fine adjust (coarse adjust can be done by dip switch)
6 - Reliable design (preferably field proven, existing design)