Are there any individuals capturing ODS data on Steam Turbine Generator Shafts using TSI BNC's (prox probes)? It seems like a straightforward process, and I have been eager to give it a try. However, finding the time to do so has been a challenge. I currently use a CSI 2 Channel 2130 for collecting data for ME'Scope models, utilizing a fixed (A Channel) and roving (B Channel) accelerometer for standard ODS analysis. I am unsure of how to achieve this using the turbine Keyphasor and BNC Outputs. Perhaps utilizing a similar approach with fixed and roving cables attached to the BNC's could yield the desired results. Any suggestions or insights on this matter would be greatly appreciated. Thank you, Mike.
Hey Mike, I'm new to using proximity probes as well, but I wanted to share my thoughts since no one else has chimed in yet. When it comes to collecting ODS data, it's important to have both phase and magnitude information. With your two-channel 2130 setup, you can capture this data even without a tachometer. Simply designate one of the sensors as stationary to enable a relative phase comparison between the two sensors, resulting in accurate readings. The use of a tach pulse is only required when utilizing a single-channel system.
Hello Jon, thank you for the feedback. I plan to complete an Operational Data Store (ODS) in the forthcoming weeks. Regards, Mike.
Hi Mike, as John mentioned, obtaining amplitude and phase data is essential for an Orbit Diagram Analysis (ODS). Using a keyphasor allows you to capture readings at 1X, 2X, and other frequencies. By utilizing proximity probes, you can create an ODS for the rotor. To analyze the structure, you can replace a traditional accelerometer with a keyphasor. We previously applied this technique to assess the main generator's outer "wrapper." Are you inquiring about obtaining 1X amplitude and phase data from the TSI model 2130? Steve.
Here is a sample Operational Deflection Shape (ODS) derived from Bentley prox probe data for a steam turbine generator. The ODS data was collected from the panel's BNCs. There are two methods for gathering this data: 1. Utilize the key phasor for phase reference and take measurements using the single channel phase and magnitude function on your analyzer. 2. Connect one of the prox probe channels to a tee and use it as a static reference point for cross channel phase measurements. I have conducted numerous ODS analyses using prox probe data. An even more effective approach is to combine bearing housing vibration data with shaft data for a comprehensive analysis.
Hello Steve, thank you for your feedback. Tony, I am trying to replicate the ODS of your turbine/generator shaft(s). In the ME'Scope Software, I am looking to set up the Measurement Axes in various formats such as Rectangle, Cylindrical, Spherical, and Machine. Additionally, I am seeking guidance on how to configure the 90-degree (45 Left - 45 Right) setup to include polarity for obtaining the orbital pattern. Thank you for sharing your animation, it is well done. -Mike
Hi Mike, it sounds like you're already familiar with ODS analysis using accelerometers, which is great. The process for capturing data on a Steam Turbine Generator Shaft isn't vastly different, but there are some specific differences especially when using TSI BNC's. Keyphasor and BNC outputs are generally used for phase reference signals in conjunction with the prox probes. You might want to start by connecting your Keyphasor to the prox probe. The BNC outputs then carry the vibration signals to your data collector/analyzer. A common practice is to use a dual channel analyzer like you're already using, and then perform FFT analysis on the BNC outputs. Remember it's absolutely crucial to ensure all your cables are in excellent condition as they're fundamentally important in this process. I hope this helps!
Hi Mike, it sounds like you’re diving into some interesting territory with ODS analysis! Using TSI BNC probes should definitely work for what you’re trying to accomplish with the turbine shafts, and your idea of having fixed and roving setups makes sense. One suggestion is to ensure that your probe placements are consistent with your current accelerometer setup to maintain data integrity. Also, consider integrating a data acquisition system that can handle both the Keyphasor and BNC outputs simultaneously, which might save you some time during data collection. It might be helpful to run a few preliminary tests to see how the data correlates with your existing ME'Scope models before going full-scale. Best of luck, and I hope you find the time to experiment!
Hi Mike! It sounds like you're on the right track with your current setup. Using TSI BNC probes for ODS data can definitely be effective, especially if you're familiar with your CSI 2130 methods. I’d suggest looking into how to synchronize the Keyphasor output with your BNC data collection—this could provide a more comprehensive picture of the dynamics involved. If time is a concern, maybe set up a dedicated session where you can experiment without the pressure of ongoing analysis. Also, don’t hesitate to reach out to colleagues who might have ventured into similar territory; sometimes, they've already worked out the kinks that can save you some valuable time! Good luck!
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Answer: Answer: To capture ODS data on Steam Turbine Generator Shafts with TSI BNC Prox Probes, you can consider using a similar approach to what you currently use with fixed and roving accelerometers for standard ODS analysis. Attach fixed and roving cables to the BNC Prox Probes and collect data for analysis.
Answer: Answer: You can utilize TSI BNC Prox Probes along with appropriate data collection equipment like the CSI 2 Channel 2130 for capturing ODS data on Steam Turbine Generator Shafts.
Answer: Answer: You can integrate turbine Keyphasor and BNC Outputs by setting up fixed and roving cables attached to the BNC Prox Probes, similar to how you would use fixed and roving accelerometers for ODS analysis.
Answer: Answer: Ensure proper setup and calibration of the TSI BNC Prox Probes, utilize a structured approach with fixed and roving cables, and consider consulting with experts or colleagues for additional insights and
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