Barometric Pressure Sensor For Indoor Application

By Sharad Bhowmick

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An advanced barometric pressure sensor that enablesGPS receivers to enhance the accuracy of height measurement in indoor spaces.

ND015A by Superior Sensor Technology is a Barometric Pressure Sensor that improves the accuracy of GPS elevation measurements. This barometric pressure sensor can accurately determine the elevation within 6 inches of actual height even in indoor spaces. Moreover, it can measure elevation above or below sea level. ND015A can be clubbed with a GPS receiver which enhances its capabilities and allows the GPS-enabled system to precisely pinpoint the latitude, longitude, and elevation with minimal errors. The pressure sensor has a wide measurement range from1034 mbar to 10.3 bar. Pressure Series is ideal for a wide variety of applications where there is a need to measure air and gas pressures against absolute zero pressure.

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The sensor offers an extremely low noise floor and incorporates a 50/60 Hz Notch Filter, which enables the sensor to accurately provide measurement readings in areas susceptible to noise from power lines or the electrical grid. The low noise floor makes this sensor more accurate than the traditional sensors. The sensor also performs temperature compensation between -20°C to 85°C and supply voltage compensation in order to achieve higher accuracy.

According to the company, the ND015A is based on the company’s Nimble Sense architecture, which incorporates processing intelligence with signal path integration and proprietary algorithms, these algorithms improve the cost-to-performance ratio of the pressure sensors. The ND015A also has an optional multi-order, advanced digital filtering feature that further cancels out noise caused by external sounds, vibrations and rapid movements.

“As factory automation and industrial IoT continue expanding, the need for precise height measurements will become critical in future infrastructures,” said Anthony Gioeli, Vice President of Marketing, Superior Sensor Technology. “Our advanced barometric pressure sensor technology is an easy, cost-effective solution for ensuring GPS receivers can accurately determine elevation location with no errors.”

Features of ND015A
• Highly integrated sensor with ADC and DSP
• Pressure ranges from 15 psia (1034 mbar) to 150 psia (10.3 bar)
• 16-bit resolution
• Exceptional Zero Stability
• Integrated 50/60Hz Notch Filter
• Very High Accuracy +/- 0.1%
• Silicone gel protection on all models
• Temperature Compensated -20°C to 85°C
• Supply Voltage Compensation
• Fully Integrated Compensation Math
• Standard I2 C and SPI Interface


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