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Intelligent protection for small critical rotating plant

23 May 2014

Continuous protection and monitoring is becoming a vital requirement for many small but critical rotating plant as part of the process of improving efficiencies, reducing energy consumption and eliminating downtime.

Whether generating power, pumping essential fluids or driving process equipment, it is vital to monitor machinery dynamic behaviour and protect processes from the disruption and expense of unscheduled downtime.

The problem arises with the high cost of many sophisticated protection systems. This can make it difficult to justify for smaller machinery operating on less critical applications. The solution is cost-effective and compact machinery protection monitoring, such as the DN26 G3 protection monitor from Sensonics. 

The DN26 G3 provides compact and cost-effective protection for smaller plant and equipment such as, pumps, fans, motors, centrifuges, turbines, or any item of small to medium industrial machinery.  The DIN-rail mountable unit can monitor two channels of bearing vibration, shaft vibration, or shaft position and offers fully programmable signal conditioning with a range of measurement algorithms and sensor options. 

In addition the monitor offers a dedicated speed monitor channel that can also be utilised as a phase reference for harmonic analysis of the vibration signals. 

The sensor interface is programmable to accept IEPE type accelerometers/velometers, proximity probes (API 670 standard), and active/passive speed probes.  

All sensor signals are available via a buffered interface which provides the option of further detailed analysis if required. Three alarm relays are available as standard (expandable to up to seven relays via a digital interface), one dedicated to indicate module and sensor integrity, the other two relays are fully programmable across the alarm criteria selected. All three input channels measured values are available via a 4-20mA interface.

The unit is available with Ethernet communications as standard, enabling configuration either locally or remotely through the inbuilt web server and offering Modbus over TCPIP for connecting measured data to other plant wide systems.  The DN26 G3 features a built-in colour LCD display and menu drive facility that provides various display modes. 

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