NPI-19J-200AV

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Pressure sensors, also known as pressure transducers, are devices that measure pressure of a gas or liquid and convert it into an electrical signal. The NPI-19J-200AV is a high-precision pressure sensor manufactured by STMicroelectronics. It is designed to measure absolute gauges, differential pressures, and pressure-based flow rates. This device has a wide range of applications in industry, medicine, aerospace and other applications.

The NPI-19J-200AV has a wide measuring range up to 2000 hPa, with a full scale accuracy of 0.5% FS, and a short response time of 200 µs. It is a dual in-line package (DIP) device that uses two distinct processes to measure pressure: Wheatstone bridge and piezoresistive. Wheatstone bridge is an analog technique wherein the bridge’s output voltage is proportional to the applied pressure. Piezoresistive measures the change in its resistance with the change in applied pressure.

The operation of the sensor is based on a Wheatstone bridge, whose output voltage is proportional to the applied pressure. The Wheatstone bridge consists of four resistors; when the bridge is balanced, the voltage output is zero. The four resistors are placed around a diaphragm and connected to the sensor circuitry. The combination of the resistors and diaphragm creates the bridge. As pressure is applied to the diaphragm, its shape changes, causing the resistance of each resistor to change, resulting in an output voltage.

The piezoresistive element consists of a piezoresistor connected to a diaphragm. As pressure is applied, the diaphragm deflects in response, changing its resistance. The piezoresistor is connected to a Wheatstone bridge circuit and the voltage generated is proportional to the applied pressure. The output voltage is then amplified and converted to a digital signal by an A/D converter.

The NPI-J19-200AV can be used for a wide range of applications such as pressure monitoring in industrial processes, blood pressure monitoring in medical applications, fuel injection systems, master cylinder pressure measurements and flow rate measurements. It is also designed to operate in extreme environmental conditions including high temperature, high humidity, and severe vibration to ensure its long life and accuracy. Its DIP package makes it highly suitable for applications that require high-density integration.

The NPI-J19-200AV pressure sensor is a versatile and reliable device for measuring pressure in a wide range of industrial and medical applications. It is designed to have excellent performance and accuracy, and its easy integration allows for seamless integration into existing equipment. Its DIP package format and wide range of operating conditions make it highly suitable for industrial applications.

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