Sensor, for measuring the melting pressure in a plastic-processing machine, comprises pressure capsules made from a eutectic alloying system

摘要

Sensor (1) comprises a first pressure capsule (2) having a separating membrane (3) and a second pressure capsule (4) having a measuring membrane (5) with both capsules being made from a eutectic alloying system made from gallium, indium and tin. Preferred Features: The liquid contains (in wt.%) 50-90 gallium, 5-25 indium and 5-29 tin and additionally contains 0-29 zinc, 0-10 lead, 0-2 bismuth and/or 0-2 antimony.