Assembly in Action: Turnkey Cell Builds Theft Warning Sensors
HL-Planartechnik GmbH (Dortmund, Germany) manufactures tilt sensors for various carmakers. A tilt sensor consists of a hermetically sealed ceramic housing with a thin-film sensor substrate on its bottom surface. The housing is filled with a conductive fluid. Measurement electrodes and contacts are mounted on the sensor substrate, which is bonded to the ceramic housing with a solder glass joint. Solder glass is a paste that has the structure and characteristics of glasstransparent and gas-proofwhen it is cured.
The tilt sensors are assembled on an automated production line designed and built by Sieghard Schiller GmbH & Co. KG (Sonnenb¿hl, Germany). The line includes processes for joining thick-film substrate to the ceramic housing, dispensing the solder glass, precision metering of the sensing liquid, installation and soldering of pins, in-line cleaning, encapsulation and packaging.