Process transmitter with control unit

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


  • 5-digit 7-segment LC display, backlit
  • Input: 2 x universal (current, voltage, R, RTD, TC, resistance)
  • Output: 2 x analog (current, voltage)
  • 2 x relay outputs, 1 x open collector
  • Auxiliary power supply / 24 V intrinsically safe loop power supply

Fields of application

  • Plant and apparatus engineering
  • Control rooms and switch cabinets
  • Process control, recording and monitoring
  • Signal adaptation and conversion
  • Overfill protection (WHG)


The RMA42 process transmitter by Endress+Hauser displays analog measured values, evaluates them and calculates further values. Sensors can be supplied from the integrated transmitter supply. Current and voltage signals, RTDs and TCs can be connected to the universal inputs. Process signals can be transmitted via the analog outputs. The integrated application package "Differential pressure" enables fast and easy configuration of differential pressure applications.

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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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Valentine Godin

Great product and customer care! Reliable, fast and honest... I have recently purchased 2 pieces of equipments; their service has been spot on from start to finish, understanding my needs, providing useful advice and rapid assistance when it was required! Highly satisfied, I highly recommend their teams and would definitely work with them again in the future!

Product Details