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DCT 531 i Precision Pressure Transmitter with RS485 Modbus RTU

The DCT531i Digital Pressure Logger offers precision in various applications and is ideal for test benches and leakage tests. It features high accuracy and excellent temperature stability. Utilising an RS485 interface with MODBUS RTU protocol ensures efficient long-distance data transmission. Direct coupling to a master device enhances data integrity, avoiding conversion losses. Its versatile connection options make integration easy. The DCT531i is a reliable choice for superior pressure measurement.

DCT 531 i Digital Pressure Logger Product Parameters

  • Pressure Ranges: Up to 400 bar in gauge or absolute pressure.
  • Output Signal: RS485 with Modbus RTU protocol for pressure and temperature.
  • Accuracy: ±0.10% FSO for ≥0.25 bar; ±0.25% FSO for <0.25 bar.
  • Electrical Connections: Direct voltage supply of 9 – 32 VDC.
  • Process Connections: Various options including stainless steel and EPDM seals.
  • Media Compatibility: Suited for non-aggressive gasses and liquids.
  • Special Features: High mechanical stability, IP67 protection, and a compact design.


DCT 531 i Precision Pressure Transmitter Product Highlights

The DCT531i Pressure Transmitter is a versatile and reliable instrument designed for accurate pressure measurement in a wide range of applications. It covers a nominal pressure range from 0 … 100 mbar up to 0 … 400 bar, providing precise and consistent readings. The transmitter utilises an RS485 output signal with Modbus RTU protocol, ensuring seamless communication and integration into various systems. One of its standout features is the ability to transfer both pressure and temperature values, allowing for comprehensive monitoring and analysis. Additionally, the DCT531i exhibits perfect thermal behaviour, ensuring accurate measurements even in fluctuating temperatures. With excellent long-term stability, this transmitter offers reliable performance over extended periods of operation. It also includes a reset function for convenient recalibration when necessary. The DCT531i Pressure Transmitter offers optional versions such as a G 1/2″ flush pressure port for applications up to 40 bar, a pressure sensor that is welded for added durability, and the availability of customer-specific versions to meet specific requirements. Overall, this transmitter combines precision, durability, and flexibility, making it an ideal choice for various industrial and commercial applications.

Applications for the DCT 531i Pressure Transmitter

  • Plant and machine engineering
  • Energy industry 

To download the latest datasheet click here: DCT 531 i

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