Data Acquisition & Telemetry

Top data management on the DIN rail

October 2019 Data Acquisition & Telemetry

The data manager family of Endress+Hauser is growing. To meet the strong demand from the market for a smart, compact DIN rail data manager for mounting in the control cabinet, development of the RSG45 DIN was initiated about a year ago. Short time to market, compact design and the expansion of the display options of the integrated web server were the key objectives. Positive feedback from field tests confirmed this and the expectations were fulfilled.

Full compatibility in multi-functional applications

The RSG45 DIN is 100% hardware and software compatible to its counterparts and has the same possibilities as the display devices. The I/O channels can be ordered freely configured with HART or universal inputs. All interfaces and fieldbuses are also available and it offers an attractive entry price for system builders, OEMs and skid builders. When used as a data and application manager, preferably for communication tasks, an on-site display is often not necessary. The installation is integrated in the control cabinet, allows easy wiring and the visualisation and operation is carried out via the web server which has been considerably extended in terms of its functionality.

To that end, an application (e.g. plant visualisation) can be accessed through a web browser window. A connection can also be established with cordless devices such as tablets and access is of course possible via the Internet from anywhere in the world. With the already well-known application packages such as mathematics, energy, waste water, etc., the device is suitable for applications in most industries. Through the connection using the Ethernet-based fieldbus to automation systems, the unit is suited to use as an intelligent remote I/O with data pre-processing, application packages and control functions. This is a key differentiating feature in comparison to conventional remote I/Os.

Turn data into information

One of the strengths is the wide range of communication capabilities. With integrated digital communication from the sensor up to higher-level systems (ERP, cloud, etc.), the device offers almost unlimited possibilities for communication. Particularly interesting is the possibility of a second communication channel, which is increasingly required in automation. In addition to the transmission of measured data in real-time via fieldbus to the automation system, Ethernet (TCP/IP, Modbus TCP/IP, OPC, etc.) is available for the transmission of large volumes of data as well as diagnostic and analysis functions in the control level or the cloud databases.

Many sensors, e.g. Endress+Hauser flowmeters not only provide the actual measured value, such as flow rate, but also temperature values, density, condensate, etc. using the HART protocol. Here, the RSG45 DIN is in its element. As an intelligent HART gateway it can pre-process values, perform calculations, and link them together. The measured data or results are then transferred via fieldbus or Ethernet. Device connectivity and the provision for further data processing are the basis for future solutions and cloud-based data management.

iTherm TrustSens calibration monitoring

For the iTherm TM37x TrustSens, the RSG45 offers the new functionality – TrustSens calibration monitoring. In an application with TrustSens temperature sensors connected via HART, the device monitors the sensors for self-calibration. As soon as a TrustSens reports a completed calibration by changing the calibration counter, the RSG45 retrieves all relevant data from the sensor, provides the data with a time stamp and stores it in a database. Directly on the device, via web server or via the FDM software, calibration certificates can be generated from the data records. Deviations from the reference temperature sensor are therefore continuously logged. Customers gain 100% transparency about their processes and reduce the risk of unacceptable deviations in temperature measurement.

Simple ordering process across all device variants

The Memograph M DIN rail is the new basic device in the order structure of the RSG45. The display, with the navigator as well as the stainless steel touch display, is available as an option with an additional charge. Customers who already use the RSG45 with one of the two available displays will not be required to change their order structures. Due to the integration into the existing structure, no adjustments of the validation and approval processes are required.

For more information contact Benjamin Mlangeni, Endress+Hauser, +27 11 262 8000,,


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