Keller OEM Sensors, Transducers Series 7S / 9S OEM all media pressure sensor

The Series 7S / 9S is the latest development in media isolated piezoresistive silicon chip pressure transducers. The new low mass one-piece housing is smaller with a brazed stainless steel diaphragm for lower production cost, giving excellent long-term stability combined with easy installation. The Series 7S / 9S can be installed into a housing using an O-ring seal, or it can be welded.  Welding should only be made to the lange at the rear of the transducer. Performance speciications will remain unaffected by the proper installation. The O-ring seal may be itted directly below the lange, or as a peripheral seal at the front face of the transducer. The rear lange can be modiied or machined off completely where space is important. The thin lange and outer capsule wall ensure that mechanical mounting stresses are not transmitted into the measuring cell. The structure also has good thermal conductance and the sensor closely tracks the process media temperature The Series 7 S / 9 S transducers are constructed from 316L stainless steel, using a high temperature hydrogen brazing technique; the brazed 316L diaphragms are highly resistant to corrosion. The diaphragm of the Series 9 FL is laser welded with the housing. Electrical  connection is made via a ive-pin header. Leadout wires, or a PCB, can be soldered directly to the header pins.
Series 7SE / 9SE versions are supplied with PCB itted. Every pressure transducer is subjected to comprehensive tests for pressure and temperature characteristics, and is delivered with an individual calibration certiicate (except for version 9 SE / 
9 FLE). Special testing is available on request from the customer. Typical applications are, heating pumps, autoclaves and dialysers. Other applications include measurement of altitude, avionics, meteorology, servo controls, robotics, hydraulics, hygienic and pharmaceutical engineering, drift mining, injectors, and many more.

Speciications  Excitation I = 1 mA
  Pressure Ranges (FS) and Overpressure in Bar. Signal Output in mV.
PR-7 S / 9 S  (7 S: only from 5 bar)  -1  -0,5  -0,2  -0,1  0,1  0,2  0,5  1  2  5  10  20
PAA-7 S / 9 S  (7 S: only from 5 bar)      0,1  0,2  0,5  1  2  5  10   20
PA/PAA/PR 9 FL  (thin lange)       0,1  0,2  0,5  1  2  5  10   20
PA-7 S / 9 S  (7 S: only from 5 bar)         1  2  5  10  20
PA-9 FL   (thick lange)               50  100  200
Signal Output typ. * (mV)   75  50  25  15  15  30  60  100  140  200  225  225  225  225  225
Overpressure (bar)  -1  -1  -1  -1  2,5  2,5  2,5  3  4  7  15  30  100  200  300

 

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