Piezoresistive OEM Pressure Transducers Series 8
2Pages

Piezoresistive OEM Pressure Transducers absolute and sealed gauge pressure The Series 8 pressure sensors are extremely ­ urable, even when exposed to fast pressure d peaks. They have been developed especially for the measurement of high pressures. The Series 8 sensor for ranges 400…1000 bar uses a ­hicker glass feed through and a wire-bonded t measuring cell. 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 corrugated diaphragm. The housing is filled with silicone oil for the transfer of the pressure from the d ­ iaphragm 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. Typical applications: Industrial processes, aviation electronics, servo controls,oil industry, robotics… 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. 9 nominal measurement ranges from 10 to 1000 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 avai­ lable if demanded by the customer. As an alternative, KELLER offers Series 7 L (HP) and 7 LI with a laser welded stainless steel diaphragm. The technique for laser welding further improves the resistancy against crevice corrosion and still retains all the traditional performance, stability and quality for which KELLER is renowned. Series 8 High Pressure Series 8 High Pressure (> 200…1000 bar) ø 14,8 KELLER Ges. für Druckmesstechnik mbH DE-79798 Jestetten +49 7745 9214 0 eurocenter@keller-druck.com KELLER AG für Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 info@keller-druck.com Edition 06/2016 2,1 Subject to alterations ø 15 h6 to ISO 9001 Companies approved 8 www.kelle

□ KELLER PAA-8 PA-8 Signal Output typ.* @ Supply 1 mA Standard Pressure Ranges (FS) 10 20 PAA: Absolute. Zero at vacuum PA: Sealed Gauge. Zero at atmospheric pressure (at calibration day) ± 40% Bridge Resistance @ 25 °C Constant Current Supply Isolation @ 500 VDC Storage-/Operating Temperature Compensated Range Vibration (20 up to 5000 Hz) Endurance @ 25 °C Housing and Diaphragm Seal Ring Support Ring High Pressure Oil Filling Weight Dead Volume Change @ 25 °C Electrical Wires (optional) Accuracy (2) Offset at 25 °C Temperature Coefficient - Zero max. - Sensitivity typ. (4) Long Term...