I have a 18F1320 that will have 2 pressure sensor (Motorola Freescale 
MPX5010G and MPX5700GP) inputs. Both are 0 -5 volt (nominal) outputs. 
Planning the recommended filter caps and then to ADC ports. I don't need 
extreme accuracy, +/- 5% is OK. The sensors will plug in and 
interchangeable with several spares, along with the PIC boards so if a 
component goes bad, one needs to only swap out the sensor or board. With 
this interchangeability, should I include a POT  in the circuit for 
adjustment, and if so where should it be, series with the sensor output 
AND ADC INPUT?

Also have a 10K ohm NTC Thermistor that will have a series resistor to 
an ADC input for temperature sensing. To be within a degree or so at 
freezing is needed, but the within a couple of degrees is adequate at 
other temps. Probably I can select the series resistors so they are 
close to each other for the spare boards, should I also plan a POT here?

In both cases, I plan to have one program with experimentally selected 
scaling factors to provide the actual values, and not tailor each spare 
board.

Thanks :)
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