Sensors Series 1 TAB0 pages

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PlEZORESISTIVE LOW COST PRESSURE SENSOR

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ABSOLUTE PRESSURE

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SERIES 1 TAB

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The TAB 1 pressure measuring cells are designed to measure absolute pressures. They are

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offered in two different version: Version 1 to be soldered on a glass feed through and welded

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in an oil filled housing as for industrial transmitters. Version 2 can be soldered directly on

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printed circuit boards of instruments as for the measurement of depths or altitude, where the

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surrounding pressure is measured.

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TAB (Tape Automated Bonding) is a special process for contacting the diffused resistors on

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the chip. The resistor aluminum contacts are provided with 0,1 mm thick gold bumps. The

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pretinned ends of the copper strips on the flexible circuit material are soldered to the these

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goldbumps. Each contact is able to withstand a force of more than 1 Newton. TAB bonded

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cells withstand extreme conditions in shock or vibration. TAB bonded cells may be surrounded

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by high viscosity gels or mouldings in water depth instruments without danger of contact

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braking as with wire bonded cell.

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20

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900

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30

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SPECIFICATIONS. Excitation I = 4 mA

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Pressure Ranges (FS) bar 10

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Signal Output typ. mV 900

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Overpressure bar 20

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Bridge Resistance @ 25°C Q 3500

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Constant Supply mA 4 nominal

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Operating Temperature °C -20...100

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Storage Temperature °C -40. ..120

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50

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900

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75

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100

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900

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150

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± 20%

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5 max.

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200

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900

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300

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400 600

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900 900

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600 800

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SERIES 1 TAB:

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VERSION 1

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Material of Flexible Circuit Polyamide

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Weight 2 g

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Volume Displacement < 0,1 mm3

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Accuracy 0) %FS 0,5 typ.

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Offset a 25°C mV < 20

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Temperature Error

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- Zero mV/°C 0,1 typ.

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- Sensitivity %/°C 0,02 typ.

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Long Term Stability typ. mV 2

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Time Constant ms < 1

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1 max.

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0,2 max.

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0,03 max.

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(1) ncluding linearity, hysteresis and repeatability. Linearity calculated as best straight line through zero

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Note: To be sure that the sensors reach the Offset and Temperature Error performance, the sensor must

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be tested and the compensation resistors may have to be added.

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SERIES 1 TAB:

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VERSION 2

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m

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M—^-

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<OMPENSATIOf\

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Subject to alterations

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KELLER AG fur Druckmesstechnik St. Gallerstrasse 119

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KELLER Gesellschaft fur Druckmesstechnik mbH Schwarzwaldstrasse 1 7

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CH-8404 Winterthur

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D-79798 Jestetten

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Tel. 052 - 235 25 25

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Tel. 07745-9214-0

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Fax 052-235 25 00

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Fax 07745-9214-50

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Companies approved to ISO 9001 / EN 29001

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www.keller-druck.com

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