Piezoresistive OEM Pressure Transducers Series 7 - 2 Pages

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Piezoresistive OEM Pressure Transducers Series 7

Catalog excerpts

Piezoresistive OEM Pressure Transducers absolute- and sealed gauge pressure The Series 7 pressure sensors for medium pressure ranges are very compact isolated OEM-sensors with a diameter of only 15 mm. They should be preferred over Series 9 where small dimensions and low weight provide benefits. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient influences by a stainless steel housing sealed with a concentrically corru­ ated diaphragm. The housing is filled with silicone oil for the transfer of the pressure g from the diaphragm to the sensing component. ­ All metal parts in contact with the pressure media are made of stainless steel AISI 316 L. The fully welded housing is vacuum-tight. The connecting pins allow direct PCB mounting or can be used for connecting cables. A Rugged Pressure Transducer The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel AISI 316 L. High Sensitivity A nominal signal of 200 mV is obtained at a supply current of 1 mA for all standard pressure ranges. Flexibility Versions: Absolute and sealed gauge pressure. 6 nominal measurement ranges from 5 to 200 bar. Different materials and oil fillings (see options verso). Quality Each pressure transducer is subjected to comprehensive tests for its pressure response and temperature characteristics, and is delivered with an individual calibration certificate stating the characteristics as well as the results of all tests which were performed. Special testing is available if demanded by the customer. The Series 7 can also be delivered with a laser welded media isolation diaphragm (see data sheet Series 3 L - 10 L). The technique for laser welding stainless steel diaphragms further improves the resistancy against crevice corrosion and still retains all the traditional performance, stability and quality for which KELLER is renowned. Electrical Connections 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 06/2016 Subject to alterations Companies approved to ISO 9001 www.keller-druck.com

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□ KELLER Standard Pressure Ranges (FS) PAA-7    5    10    20    bar Signal Output typ.* @ Excitation 1 mA    200    200    200    200    200    200 mV PAA: Absolute. Zero at vacuum PA: Sealed Gauge. Zero at atmospheric pressure (at calibration day) * ± 40% Bridge Resistance @ 25 °C Constant Current Supply Insulation @ 500 VDC Storage-/Operating Temperature Compensated Range Vibration (20 to 5000 Hz) Endurance @ 25 °C Housing and Diaphragm Seal Ring Oil Filling Weight Dead Volume Change @ 25 °C Electrical Wires (optional) Accuracy (2) Offset at 25 °C Temperature Coefficient - Zero max. -...

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