March 9, 2007, Depew, NY, USA – The IMI Sensors division of PCB Piezotronics has announced the release of the
Model 649A01 Reciprocating Machinery Protector (RMP), which utilizes the next generation of impact monitoring
technology. This two-wire, loop-powered, 4-20 mA transmitter detects impacts from mechanical shock events,
which typically occur in or near a machine’s cylinder assembly. This technology is particularly effective on
reciprocating machinery where these high frequency impacts are often overlooked, or when trending overall vibration
levels. The hermetically sealed design can be easily interfaced with existing alarm, control, and monitoring systems
such as PLC’s, DCS’s, and SCADA systems.
The field programmable features of the RMP allow users to customize each installation point, and tailor the output to
suit their application. This includes variable set points and alarm levels for optimum performance. The RMP detects
common reciprocating compressor faults such as loose or broken bolts, cracked connecting rods, and scoring in the cylinder.
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