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Piezoresistive OEM Pressure Transducers

Series 9

sealed gauge, absolute, vented gauge, differential
The Series 9 pressure sensor is the most economic version for pressure ranges from 100 mbar
to 200 bar. The standard version is supplied with connecting pins (leadouts are fitted only on
request) and the serial number is not engraved.
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 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: Measurement of altitude, aviation electronics, meteorology, servo controls,
robotics, hydraulics, sanitary and pharmaceutical engineering, underground mining, injection
engineering…

Series 9

Rugged, Small Dimensions, Light Weight
The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel
316L. Diameter 19 mm; Height 5 mm; Weight 8 grammes.
High Sensitivity
A nominal signal of 200 mV is obtained at a supply current of 1 mA for standard pressure ranges
above 2 bar.
Ranges from 0,1 to 200 bar
Absolute pressure, sealed gauge, differential, barometric, vented gauge and wet/wet differential.
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 9 can also be delivered with a laser welded media isolation diaphragm (see data
sheet Series 3 L - 10 L). The new 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.

Series 9

Series 9 PD

ø 18,9

Electrical Connections
Transducer 5 Pin

ø 18,9
2

≈5

+

0,6
(PR)

3

ø 1,2

12-14
ø 19

- OUT
(blue)

13,3
ø 19

-

1,3
0,8

Transducer 6 Pin

+ IN
(black)

5,6 1,3

0,6

Series 9 PD

+ IN
(black)
+ OUT
(red)

- IN
(yellow)

+ IN
(black)
+ OUT
(red)

- OUT
(blue)

- IN
(white)

- IN
(yellow)

- IN
(white)

ø 18,9

Reference circle Ø 7,1 mm
45°-spacing

ø 0,45

13,5

-IN +OUT +IN +IN -OUT -IN

11

Subject to alterations

02/07

KELLER AG für Druckmesstechnikt

St. Gallerstrasse 119t

CH-8404 Winterthurt

Tel. +41 (0)52 - 235 25 25t

Fax +41 (0)52 - 235 25 00

KELLER Ges. für Druckmesstechnik mbHt

Schwarzwaldstrasse 17t

D-79798 Jestettent

Tel. +49 (0)7745 - 9214 - 0t

Fax +49 (0)7745 - 9214 - 60

Companies approved to ISO 9001:2000

www.keller-druck.com