ST150PG1SPGF

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Pressure sensors and transducers measure pressure, which is the force acting per unit area. Pressure sensors are generally categorised as absolute, gauge or differential, depending on how the pressure is measured in relation to ambient atmospheric pressure.

The ST150PG1SPGF is a pressure transducer specifically designed to measure differential pressure in a ‘gauge’ configuration. A gauge pressure transducer measures the pressure relative to atmospheric pressure, making it suited for measuring the pressure difference between two points with reference to the atmospheric pressure.

The ST150PG1SPGF is used in applications ranging from industrial and digital HVAC control, air velocity or flow measurement, water and oil level measurements, and home appliance control. This pressure transducer has a high performance pressure range of up to 150 PSI differential and distinguished accuracy.

Working Principle

The ST150PG1SPGF employs a single piezoresistive signal-conditioned strain gauge bridge circuit as the sensing mechanism. The strain gauge is mounted on a semiconductor strain gauge which senses the pressure applied to the transducer diaphragm and converts it into an electrical signal. This signal is then amplified and processed by the onboard electronics.

The transducer includes an integrated temperature compensation circuit to ensure accuracy in wide temperature changes. The temperature of the sensing element is measured and the output is corrected for changes in zero output and sensitivity due to temperature. The circuit uses its self-compensated thermistor to achieve excellent resolution and accuracy, even at very low temperatures.

The sensor also includes an offset adjustment feature. This feature allows users to set a lower low pressure calibration point. This allows the pressure transducer to display a range of their choice, with the offset acting as the reference point. The offset adjustment feature also allows users to measure negative gauge differential pressures.

The housing of the transducer is manufactured from high-grade stainless steel to protect against corrosive environments. The diaphragm is made from a corrosion-resistant alloy to provide years of reliable and accurate measurement.

Conclusion

The ST150PG1SPGF is a pressure transducer specifically designed to measure differential pressure in a ‘gauge’ configuration. Its high performance pressure range of up to 150 PSI makes it ideal for a variety of applications such as industrial and digital HVAC control, air velocity or flow measurement, water and oil level measurement, and home appliance control. Its integrated temperature compensation and offset adjustment features ensure accuracy in a wide range of conditions, and its stainless steel housing and corrosion-resistant diaphragm guarantee years of reliable service.

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