Posted to News on 17th Jul 2020, 12:42
Cost-effective vibration measurement for enhanced protection
The advantages of applying vibration condition monitoring to rotating equipment is well established, but the technique can only provide the maximum benefit when correct measurement techniques are employed. So what is the correct measurement technique and best to implement? Also, what if a user needs to make a change to the measurement to optimise early fault detection?
Whilst industrial vibration sensors offer a broadband performance suitable for most machines, some might say that it is the signal processing that can make the difference. Furthermore, one can argue that the right hardware to provide a range of measurement algorithm options will maximise the return on investment as well as future proofing an installation. Typically, the higher cost of more sophisticated vibration monitoring systems offering this type of flexibility can be difficult to justify for users either designing or operating smaller machinery, says Sensonics. To help overcome this, condition monitoring specialist Sensonics has developed its DN26 G3 protection monitor to provide a suitable stand-alone monitor: it complements the company's range of rack-mounted products. The dual channel, din rail mountable unit provides monitoring of bearing vibration, shaft vibration, or shaft position and provides fully programmable signal conditioning with a range of measurement algorithms and sensor options.
Sensonics says that the unit is designed for optimum flexibility. As a universal module (single hardware platform) it is field-upgradable and also fully programmable. Special protection options include slow rotation vibration monitoring down to 0.2Hz and narrow band filter measurements for specific vibration signatures. In addition, the DN26 G3 offers a dedicated speed monitor channel which can also be utilised as a phase reference for further 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 and all three input channels measured values are available via a 4-20mA interface. The unit is available with Ethernet communications as standard, permitting configuration either locally or remotely through the in-built webserver and offering Modbus over TCPIP for connecting measured data to other plant wide systems. The DN26-G3 features a built-in intuitive colour LCD display and menu drive facility providing various display modes and an alarm historian with real-time logging capability.
Follow the link for more information about the DN26 G3 protection monitor.
