Differential Pressure Sensor — PD-10 Series

Description

The 10 PD series devices are sensors for measuring differential pressure. Keller has developed a new laser welding technology that allows a very thin membrane to be welded to the housing. All presented versions still meet the high level of stability and quality for which Keller has become known worldwide.

Each sensor comes with a calibration certificate indicating sensitivity, linearity, zero, temperature error, and compensation resistor parameters, which mainly account for zero drift and temperature zero.

The sensor design allows for a non-welded connection later using an O-ring seal. This protects the membrane from possible stresses and guarantees the pressure and temperature readings obtained during calibration. Each sensor contains a piezoresistive silicon chip mounted on a polished metal surface. This assembly is then welded to the housing and filled with silicone oil. A thin membrane is laser welded on top, making the assembly hermetic. The medium pressure acts on the membrane made of stainless steel and is then transmitted through the oil to the silicon measuring chip.

Options

• Platinum or Hastelloy C-276 membrane. Entire housing made of Hastelloy C-276
• Completely flat membrane
• Oil for low/high temperatures. Olive oil (for food applications)
• Special characteristics: Overloads, lower TC-zero coefficient
• Special tests
• All possible ranges from 0.1 to 1000 bar
• Other compensation temperatures
• Built-in PCB board