Featuring two fully programmable relay contacts, the RTA 421 is best described as a low-cost combination of a contactor, display and power supply. Its compact housing has three pushbuttons for easy front-end configuration, with a liquid crystal display for simultaneously visible alarm set points and a ten segment bar-graph displaying the percentage value of the connected signal.
Loop power supply means that the RTA 421 is ideal for monitoring current (0,4 to 20 mA) or voltage (0,2 to 10 V) signals through connected sensors. Two independent output relays with changeover contacts are switched if values either exceed or undercut preset alarm setpoints, allowing hassle-free set point monitoring in applications ranging from plant and machine construction to panel builders, process monitoring and process control, enabling safer operation. Typical applications include temperature control and pressure switching, in conjunction with the relevant sensors also supplied by Endress+Hauser.
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The mining industry faces several ESG challenges, particularly in relation to water stewardship, water licensing, water quality monitoring, and emission monitoring. Fortunately, Endress+Hauser is well positioned to help mines achieve their commitments in these areas.
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News
Endress+Hauser South Africa was joined on its stand at Electra Mining Africa by valued customers, representatives, colleagues and industry friends for a spectacular cake cutting ceremony to celebrate 40 marvellous years in southern Africa.
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