OEM Ceramet Pressure Sensors Kistler Models MER180, MER181
Ceramet is a piezoresistive sensor on a ceramic base. It is rugged, corrosion and abrasion resistant which makes it particularly suitable for industrial OEM applications. These OEM Ceramet Pressure Sensors Kistler Models MER180, MER181 have a wide operating temperature range of -40°C to 125°C combined with high stability and accuracy. These features make them ideal for process control purposes in industrial equipment manufacturing and instrumentation.
Ceramet allows direct contact of the fluid with the measuring cell and is easy to handle. Its small 18 mm diameter allows for easy installation into almost all applications. Sensors for absolute and relative pressure with ranges from 1 to 400 bar are available.
The piezoresistive effect can be observed in a great variety of materials. On Ceramet, a special proprietary piezoresistive material is applied onto a ceramic diaphragm by using thick film techniques. This gives high sensitivity and stability over a wide temperature range.
The pressure acts directly on the front face of the ceramic diaphragm. Therefore, almost any fluid can be measured because ceramic offers unequaled resistance against aggressive media. The screen-printed resistors on the opposite face of the diaphragm are connected to a Wheatstone bridge. The element, with the diaphragm, is bonded onto a ceramic base plate. For absolute pressure sensors, the void between diaphragm and base plate is under vacuum while for relative pressure, the base plate has a vent. The output from the bridge is highly linear and the output signal is proportional to the excitation voltage.