Transmitters gain ATEX approval
Published: 9 February 2012 - Joe Bush
The DN803X series of shaft vibration and thrust position transmitters from Sensonics has been enhanced following their approval for intrinsically safe applications. The DN8031 (vibration) and DN8033 (thrust position) proximity probe systems are now suitable for Ex ia IIC T4 applications when used in conjunction with Sensonics’ ATEX approved range of AECP proximity probes and AEXC extension cables.
The 4-20mA loop powered modules provide easy integration with either the local machine PLC or a plant wide DCS since it is powered through the safety barrier measurement loop. All signal processing is carried out within the unit providing an output current proportional to either peak to peak shaft vibration or relative position to the probe face. The module permits the adjustment of both gain and offset for ease of calibration to suit the application.
The DN803X series is well suited for smaller pumps and compressors where, if combined with Sensonics’ range of compact machine mounted housings, the product provides a cost effective solution for critical operational measurements, with a straightforward interface that requires no local power supply. Also well suited for OEM applications, the driver also provides a raw buffered output of the vibration signal that can be utilised through portable analysis equipment for a more detailed picture of the dynamic performance of the machine.