onemilimeter
Member level 3
I wish to build a multi-channel (say 3) thermocouple meter. Which of the following options should be opted?
1) Thermocouples -> analog multiplexer -> one instrumentation op-amp -> ADC
2) Thermocouples -> each thermocouple connected to one instrumentation op-amp -> analog multiplexer -> ADC
3) Or, other better options ...
Thanks
1) Thermocouples -> analog multiplexer -> one instrumentation op-amp -> ADC
2) Thermocouples -> each thermocouple connected to one instrumentation op-amp -> analog multiplexer -> ADC
3) Or, other better options ...
Thanks