Gas Turbine Monitoring
Customer Case
A customer who designs and develops turbo-machinery uses automated data-acquisition and reduction routines. The complete system can sequentially scan up to 144 pressures, 40 electrical signals, and 50 temperatures. It can also acquire and analyze dynamic pressure/vibration signals as well as the scanned steady-state data.
They do precise pneumatic traversing for high-performance radial-flow stages. Using a computer-controlled data-acquisition system, the detailed internal pressures and temperatures can be acquired and processed. Laboratory data files are generated, which can be directly used to process the impeller-cover static pressure data. The data can also be automatically processed to generate full performance maps and detailed component aerodynamic performance parameters.
Their dynamic rig, rotating at 1,800 to 20,000 rpm, uses digital magnetic bearings to accurately control a tested component’s position and vibration, while documenting the fluid forces that the movement or the operating load creates. Impellers, bearings, seals, couplings, or entire stages may be tested.
Their test laboratories contain instrumentation from classical pneumatic and thermal probes up to more sophisticated anemometers, high-frequency pressure transducers, and proximity probes. They have data-acquisition systems, laboratory software, traversing equipment, instrumentation devices, and calibration services for various pressure and temperature probes.
Their current requirement is to modify a vibration analysis system which monitors jitter and amplitude changes of high-speed pulse trains. The data acquisition requirement is to digitize 2 to 4 analog signals at up to 25 MS/s with 12-bit vertical resolution or more. Data record lengths range from 30 to 300 kiloSamples. Sequential data records are saved to disk for post-processing offline.
GaGe Case Solution
The CompuScope 1450 provides an ideal, cost-effective solution for the requirement. One CS1450 can digitize on two channels at up to 25 MS/s with 14-bits of vertical resolution. Two CS1450s can be configured in a Master/Slave multi-card system that provides true simultaneous sampling and triggering on 4 channels. The base model comes with 1 MegaSample of on-board acquisition memory or 500 kS per channel, which meets the requirement.
The customer requested a complete turnkey solution. Consequently, GaGe recommended an Advanced Measurement System consisting of the two CS1450s installed in a GaGe Instrument Mainframe 2020A. The IM2020A is an industrial-grade computer featuring a rackmountable shielded chassis, a wide expansion slot backplane, powerful forced-air ventilation, a 300 Watt power supply, and perhaps most importantly, a rugged CompuScope card retention mechanism that ensures stability in transit. Purchase of an Instrument Mainframe includes complete hardware and software installation, configuration and testing.
The customer’s software requirements can be fulfilled using GaGeScope – The World’s Most Powerful PC Oscilloscope Software. GaGeScope allows easy control of all acquisition parameters, display of all captured channels and rapid storage to hard drive. Stored files can be easily recalled for comparison or analysis. GaGeScope Professional Edition includes a complete suite of analysis tools such as Fourier analysis, signal averaging, and advanced mathematical functions. These tools can be used to perform preliminary analysis before the full-blown post-processing is performed on the stored data files.
GaGe Case Recommended Products
- 2 x CompuScope 1450 – 1M
- Master Multi-Card Upgrade for CS1450
- Slave Multi-Card Upgrade for CS1450
- GaGeScope Professional Edition
- Instrument Mainframe IM2020A
Industrial Application Request
We encourage you to contact us and discuss your industrial application in more detail with our engineering team. GaGe can provide tailored custom data acquisition hardware and software solutions to meet specific application requirements.