Piezoresistive Transmitters Series 22 DT
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Piezoresistive Transmitters Series 22 DT - 1

Piezoresistive Pressure Transmitters for automotive and industrial applications Series 22 DT was developed and homologated specially for use in so-called “bivalent” vehicles fitted with engines for combined natural gas/gasoline operation. The unconventional design with a small mass swept by the flow results in a fast response with temperature changes, the ­emperature being measured by an NTC or PT sensor located directly behind the stainless t steel separating diaphragm. The same diaphragm transmits pressure via a capillary to a stressfree mounted silicon measuring cell. The signal processing for pressure and temperature is carried out by an electronic module c ­ onnected to the sensors by flexible conductors. Mounted to the back of the electronic module, which is directly connected to the 6-pole plug connector are the EMC protection components. A special feature is the immunity from interference from electromagnetic fields up to 200 V/m. Specifications Pressure Range PA-22 DT Overpressure Supply Output Temperature Range Sealed Gauge. Zero at atmospheric pressure (at calibration day) Accuracy (compensated range) ± 4 %FS (-40…0 °C) ± 2 %FS (0…90 °C) ± 4 %FS (90…125 °C) Isolation > 10 MΩ @ 45 VDC Pressure Connection M14 x 1 Vibration 250 Hz @ 35 g 2000 Hz @ 15 g, X/Y/Z-axis EMV-Protection EN 61000-6-1 to -6-4 / EN 61326-2-3 Material in Contact with Media Stainless Steel 316L (DIN 1.4435), Fluorosilicone (FVMQ) Plug Tyco AMP (6 pole) C-284716 Temperature Output NTC, 5 kΩ at 25 °C Protection IP67 Weight 36 g Options Other pressure ranges and materials on request 1 +Vcc 2 OUT Pressure 5 GND 6 OUT Temp. KELLER AG für Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 info@keller-druck.com KELLER Ges. für Druckmesstechnik mbH D-79798 Jestetten +49 7745 9214 0 eurocenter@keller-druck.com Edition 09/2015 Subject to alterations Companies approved to

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