ENDRESS+HAUSER  PTC31-A1A11C1AC1A

Pressure switch for monitoring absolute and gauge pressures in gases, vapours, liquids and dust with ceramic process isolating diaphragm;

• Finely graduated measuring ranges from vacuum to 400 bar (6000 psi)
• Versions for use in hygienic applications
• Electronic versions
• one PNP switch output
• two PNP switch outputs
• PNP switch output with additional analog output 4...20 mA (active)

This compact pressure switch impresses with the latest in technology being used:

• Integrated switching electronics for decentral and economic process monitoring and control
• Quick and flexible process integration thanks to modular connections
• High reproducibility and long-term stability
• Function check and information on site thanks to LEDs and digital display
• Ceraphire ® process isolating diaphragm: corrosion proof, abrasion-proof and extremely overload-resistant
• Excellent accuracy and briefest response time right to the smallest measuring range
• Operation and visualisation also with personal computer and ReadWin ® 2000 or FieldCare®
• Upper part of housing can be rotated by 310°, therefore best readability of measured values in all orientations
• DESINA compliant
• 3A and EHEDG approved

The process pressure acts on the ceramic process isolating diaphragm and the pressure-dependent change in capacitance of the ceramic sensor is measured. A microprocessor evaluates the signal and switches the output or outputs the corresponding measured value. The ceramic sensor is a dry sensor i.e. no fill fluid is needed for pressure transmission. This means that the sensor can fully support a vacuum. Extremely high durability, on a par with the material Alloy, is achieved through the use of the highly pure material Ceraphire ® as a ceramic.