Process indicator in panel mounting housing for monitoring and displaying analog measured values

General Information
Input / Output
Mechanical Data
Certification / Approvals
Additional Information


  • 7-digit 14-segment LC display, large bar graph with overrange & underrange
  • Digital status inputs for pump monitoring
  • Input 1 x analog (U, I, RTD, TC, R)
  • Output 1 x analog (U, I), 1 x transmitter power supply
  • Relay output 4...8 x changeover contacts
  • Auxiliary power supply / Loop power supply 90...250V AC, 20...28V AC, 20...36V DC

Fields of application

  • Monitoring of the measured value for exceeding or falling below limit values
  • Monitoring of sensor or device malfunctions, batch and pump control functions


The RIA452 process indicator from Endress+Hauser monitors and displays analog measured values. Digital status inputs can monitor pumps. Two-wire sensors can supply the RIA452 with auxiliary power. Up to eight relays monitor the measured value for violation of limit values. Further operating modes for the relays are sensor or device malfunctions, batch and pump control functions. In addition, the RIA452 can be used as a preset counter and for flow measurement on open flumes and weirs.

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Somya Gupta

The conversation was highly helpful to me. I want to know about the suitable sensors that can be used for level measurements for conical tank systems. Mr. Pedro has quickly responded and explained in very ease way. It was nice interacting with him.

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