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summary Honeywell site
In summary, Honeywell’s IPT integrates easily into a customer’s application, providing high-accuracy pressure data in an industry standard SPI digital format. The IPT is small and lightweight, and can be easily applied to a wide variety of applications that require high performance in a small package such as unmanned air vehicles, remote weather stations, and hand-held test equipment. There are three types of IPTs; absolute, gauge, and differential. The absolute IPT is referenced to a vacuum and is available in 20 or 50 psi full scale pressure ranges, with an accuracy of ±0.04% full scale over the temperature range of -40ºC to +85ºC. The gauge and differential IPTs are available in 1, 2, 5, 10 or 20 psi full scale pressure ranges, with an accuracy of ±0.10% full scale also over the -40ºC to +85ºC temperature range. Applying coefficients stored in the on-board EEPROM to normalized IPT pressure and temperature digital output yields accurate and stable pressure readings. The IPT piezo-resistive pressure sensing die contains two bridge circuits; one for pressure and one for temperature. The IPT provides an analog–to-digital converter for each of these data channels; 24-bit for pressure and 16-bit for temperature. For additional information, data sheets and user specifications are available on-line at www.honeywell.com/pressuresensing.
PTM Published on: 2010-11-24