Hello all
I have a question related to problem we face in calibration of proximity sensor in SGT100 gas turbine vibration system.
The proximities are Bently Nevada and we have a monitoring system for protection. We are not sure about displacement values which are monitored in monitoring system and that’s why we are searching for a method to calibrate the measurement chain(cards) in site. At the first step we measured the output voltage of proximeter in stop mode and convert it to gap between shaft and probe. But we do not have any sense about this numbers and relation of these numbers with monitoring data.
My question is that: is the gap voltage in stop mode of gas turbine equal to zero journal and thrust bearing vibration monitoring?
I just want to know which is reference for gap voltage setting (DC offset): the regarding voltage distance between shaft and probe in stop mode? Or the center of linear range of proximity?
And do anyone have any idea of how could we make sure about our monitoring data? What is the hot loop check of proximity sensor in site?
thanks
I have a question related to problem we face in calibration of proximity sensor in SGT100 gas turbine vibration system.
The proximities are Bently Nevada and we have a monitoring system for protection. We are not sure about displacement values which are monitored in monitoring system and that’s why we are searching for a method to calibrate the measurement chain(cards) in site. At the first step we measured the output voltage of proximeter in stop mode and convert it to gap between shaft and probe. But we do not have any sense about this numbers and relation of these numbers with monitoring data.
My question is that: is the gap voltage in stop mode of gas turbine equal to zero journal and thrust bearing vibration monitoring?
I just want to know which is reference for gap voltage setting (DC offset): the regarding voltage distance between shaft and probe in stop mode? Or the center of linear range of proximity?
And do anyone have any idea of how could we make sure about our monitoring data? What is the hot loop check of proximity sensor in site?
thanks