Loop-powered vibration velocity sensor VEL-GDC series

moving coilfor fansfor pump

The VEL/GDC series of vibration transducers are robust sealed instruments providing a process current output of 4-20mA proportional to RMS velocity vibration. The series are designed for applications requiring direct integration to SCADA systems (PLC/DCS) and provide an extremely cost effective solution for measuring overall vibration performance. The VEL/GDC has evolved from our standard VEL/G range of vibration velocity sensors and combines the excellent noise immunity of a moving coil velocity transducer with a signal conditioned current loop output. Piezoelectric based vibration transmitters are susceptible to many forms of interference on most machine applications that can result in spurious readings and alarms. Typical causes include, low frequency base strain effects due to temperature changes amplified through the internal signal processing, high frequency and high g vibration events caused by auxiliary machine items resulting in transducer resonance and also mains voltage interference due to a combination of poor local plant earthing and insufficient transducer internal isolation. Features • Velocity Vibration Transmitter • High Noise Immunity • 4-20mA Loop Powered • Additional Dynamic Signal Output • Interfaces direct with PLC / SCADA systems • Top or Side exit connector and cable options • Excellent high frequency vibration rejection • Wide Supply Voltage Range • Double cased unit with excellent isolation • High Tolerance to Mains Supply Interference Application Direct DCS/PLC/BMS integration for Pumps, Fans, Motors and Process Equipment.