Piezoresistive OEM Pressure Transmitters Series 4 LC…9 LC


Catalog excerpts

Piezoresistive OEM Pressure Transmitters Series 4 LC…9 LC - 1

Piezoresistive OEM Pressure Transmitters -40…150 °C, with embedded signal conditioning The Series 4 LC…9 LC family of miniature OEM pressure transmitters combines a piezo­ esistive r pressure sensor with -40…150 °C-capable signal conditioning in one compact, easy-to-integrate package. Technology The “LC” line of miniature pressure transmitters leverages Keller’s extensive background in high-stability piezoresistive pressure sensors and innovative digital signal processing. Now, both pressure sensor and signal processor are integrated into a miniature, hermetically-sealed housing no larger than was once required for the sensor only! The name given to this new technology is Chip-In-Oil (CIO). CIO means not only that the entire pressure transmitter is embedded within a hermetically-sealed, oil-filled housing, but that this transmitter can then be seamlessly integrated into the OEM product, achieving cost savings and system performance not possible with other, conventional technologies. Interfaces The ratiometric analog output simplifies the integrators task by providing a signal output wherein the output is ratiometric to the supply, thereby eliminating the need to incorporate an expensive, absolute reference. Providing an 0,5…4,5 VDC output from a 5 VDC supply, the LC-transmitter is inherently protected against overvoltage and reverse polarity up to ±33 VDC and provides noise immunity by a factor of 10X relative to the latest standards regarding emitted and conducted EMI. Performance features • Hermetically protected sensor electronics - extremely resistant to environmental influences • Operating temperature up to 150 °C • Ultra-compact, robust housing made from stainless steel (optionally Hastelloy C-276) • No external electronics for compensation or signal processing • Extremely accurate, outstanding long-term stability, no hysteresis • Pressure ranges of 1 bar to 1000 bar • Extremely easy to integrate in overall systems • Two-chip solution with pressure sensor and signal processing separation provides a high degree of flexibility. Generally applies: No force must be applied to the pins! KELLER AG für Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 info@keller-druck.com KELLER Ges. für Druckmesstechnik mbH DE-79798 Jestetten +49 7745 9214 0 eurocenter@keller-druck.com Edition 11/2015 Subject to alterations Compan

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Piezoresistive OEM Pressure Transmitters Series 4 LC…9 LC - 2

□ KELLER Specifications Accuracy* Overpressure Long Term Stability max. +/- 0,25 %FS * Linearity best straight line @ RT, hysteresis, repeatability 2,5 x pressure range, max. 300 bar resp. 1200 bar (6 LC HP, 7 LC HP) max. +/- 0,3 %FS Type/ Version The integration of the transmitter electronics means that even extremely small designs can be properly supported, and there is a considerable amount of freedom for connection variants. Furthermore, there is no need to protect the nonexistent downstream electronics against moisture and condensation. TEB (Total Error Band): Maximum deviation within...

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