Amphenol Advanced Sensors NPI-19 Sensor

Amphenol Advanced Sensor’s NPI-19 Series pressure sensor incorporates state-of-the-art IsoSensor technology, which is designed to operate in hostile environments, with high sensitivity and linearity.

The NPI-19 series operates on 10VDC for performing 100mV FSO with 1mA excitation, and 0.1% FSO typical. If it is using a 12V power supply, then the Full-scale output will be 12/10 = 1.2 larger or about 120mV instead of the 100mV stated in the datasheet.

To connect to an Arduino board, you can consider converting the differential output of the NPI-19 to a single ended output and feed it into the ADC input on your Arduino board. Analog Devices LT6370 can be considered for signal amplification.