The “IMPACT” series of Gefran are pressure transmitters, without transmission fluid, for using in high temperature environment (350°C).
Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm.
Strain is transduced by a micro-machined silicon structure (MEMS). The operating principle is piezoresistive.
The micro structure includes the measurement membrane and piezoresistors.
The minimum deflection required by the sensitive element makes it possible to use very robust mechanics.
The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors.