I have recently started working with ODS & Modal analysis and I am equipped with the necessary tools (ME'Scope & Zonic 618) to gather and evaluate ODS & Modal data. I am curious about the types of transducers commonly used in the field. In my initial modal project, I utilized a Dytran 3143D1 tri-axial accelerometer attached to a custom-made aluminum block (1" cube). The mounting involved drilling & tapping to accommodate the accelerometer and three magnets. One issue I encountered was the lack of strain relief for the small 4-pin cable connected to the accelerometer, raising concerns about the overall durability of the setup. Any valuable tips on this matter would be greatly appreciated. - Steve
| Steve, your combination is quite intriguing and effective. I utilize a CSI model 906 magnet (cube) with three targets installed (1 screwed and 2 glued) for optimal results. My choice of a standard top exit accelerometer, along with the use of a spot facer for drilling and tapping mounting locations, ensures stability for the stationary accelerometer. It can be frustrating when cables become dislodged, which is why I use a 15-foot cable for the stationary accelerometer and a 4-foot cable for the roving one. This setup is successful for 90% of the machines I work on. In cases where the machine is larger, I opt for a longer cable on the roving accelerometer. When conducting modal jobs, I maintain the same stationary setup and focus on maneuvering the hammer for accurate readings.
Check out this image of my transducer configuration, which is reminiscent of Jon's setup but with unique features such as magnets and a tri-axial accelerometer. This customized transducer arrangement offers enhanced performance and accuracy compared to traditional setups.
Hi Steve, I'm interested in understanding your choice of using a 6-32 screw instead of the more common 1/4-28 accelerometer, such as the popular Dytran model 3063B. Can you explain the reasoning behind this decision?
The 3143D1 requires a standard 6-32 screw with a counterbore in the mounting hole of the accelerometer. A 1/4-28 screw will not be compatible due to the drilling and tapping specifications of the cube. The choice of aluminum material helps to reduce weight, as the cube is used for functional testing of tri-axial accelerometers before permanent installation. This ensures accuracy during testing on a shaker.
Hello Steve, I wanted to clarify something: what was the reason behind your choice of the Dytran 3143D1 over the Dytran 3063B? The main distinction I noticed between the two is the type of screws they utilize.
Hey Steve! It sounds like you’re off to a solid start with your ODS and modal analysis projects. For transducers, besides the Dytran accelerometer, consider trying out PCB Piezotronics or Brüel & Kjær accelerometers, as they offer great reliability and are widely used in the industry. To address your cable strain relief issue, attaching a small zip tie near the accelerometer can help reduce stress on the connector. Another approach is to use a flexible protective sleeve or conduit for the cable, giving you a bit more durability while keeping everything neat. Good luck with your projects, and keep us updated on your progress!
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: - Common types of transducers used for ODS and Modal analysis include accelerometers like the Dytran 3143D1 tri-axial accelerometer mentioned in the discussion thread.
Answer: - Mounting techniques can involve drilling, tapping, and using magnets to secure the transducers in place, as described in the thread.
Answer: - To enhance durability, it's important to consider implementing strain relief solutions for small cables connected to the transducers, as the lack of strain relief can be a concern for the overall setup's longevity.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.