RS485 Pressure Sensor | Modbus RTU Pressure Sensor | DCT531

RS485 Interface with Modbus RTU Protocol


The DCT531 RS485 pressure sensor is designed for the measurement of gas and liquid pressure in industrial applications including plant and mechanical engineering.  It has an RS485 interface which uses the communication protocol Modbus RTU.  The Modbus protocol is based on a master-slave architecture with which up to 247 slaves can be questioned by a master.  The data will transfer in binary form.

Thanks to its stainless steel 316L pressure port, housing and diaphragm, it is suited to most industrial applications so long as the contact medium is compatible with stainless steel.  Optional pressure port with G 1/2″ flush for use up to a maximum pressure of 40 bar is available on request.  Plus, we can provide a welded pressure sensor as an option for more aggressive environments.

In addition, it has perfect thermal behaviour and excellent long-term stability.


  • Ranges: 0-100mbar up to 0-400bar
  • Outputs: RS485 with Modbus RTU Protocol
  • Accuracy: <±0.35%/FS (0.25% option)
  • 500Hz Measurement Rate
  • Stainless Steel Construction
  • Excellent Long-Term Stability
  • Perfect Thermal Behavior
  • With RS485 Interface Which Uses the Communication Protocol Modbus RTUs
  • Binary Form Data Transfer
  • Ideal for Industrial Applications
  • Stainless Steel 316L Robust Construction
  • Customised Versions Available to Suit Your Application
  • Fast and Simple Setup with Custom Process Connections

Product Dimensions

DCT531 RS485 pressure sensor mechanical connections outline

All dimensions are in mm.

Electrical Connections

DCT RS485 pressure sensor electrical connections outline

5 Standard: 2 m PVC cable without ventilation tube (permissible temperature: -5 … 70°C)
6 Different cable types and lengths available, the permissible temperature depends on the kind of cable

All dimensions are in mm.

For non-standard mechanical options, please read the datasheet.


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