Crystal instruments
Crystal Instruments designs, produces, sells, and services hardware and software for machine vibration monitoring, dynamic measurement and environmental testing.
- 408-986-8880
- 408-834-7818
- info@go-ci.com
- 2090 Duane Avenue
Santa Clara, CA 95054
United States
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Chamber Controller Software
EDC (Embedded Device Control) is specifically designed software for Sentek chamber system controllers running Temperature and Humidity environmental tests. The EDC software features an intuitive interface, a powerful data review function and live data viewing. The combined EDM controller software provides one central location to set up parameters and a schedule between all three environments, with or without a connected controller. The powerful import and export features allow users to easily transfer test configurations between computers.
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Vibration Diagnostics System
VDS
The Vibration Diagnostic System (VDS) is a vibration data management system designed specifically for the machinery Predictive Maintenance (PdM) community. It harnesses the graphic display capabilities of Crystal Instruments EDM Software for the work of machinery vibration analysts. It allows the user to quickly get to the data for a machine of interest and displays that data in the familiar Tri-axial or Single Axis view. Users can quickly compare other data from the same machine, quickly navigate back into the historical data of the machine, and quickly compare the data to that of other machines in the database. The software supports the construction of Average (a.k.a. baseline) data for a class of machines and allows easy comparison to that data as well. A full suite of cursors designed specifically for PdM analysis is provided for inuitive user interaction with the data.In addition to great graphics, an extensible machine modeling system was developed specifically for vibration analysis. VDS allows users to model machines based on the elements of the machine that can contribute to the vibration energy of the whole. Model bearings, rotors such as motor bars, couplings such as flexible and fluid couplings, account for slip in fluid couplings, model gears and pulley systems, and model turbines by accounting for each stage. The system is wide open, users can create new elements to use within a system. Users that may not want to do all that are provided with a comprehensive library of machine components such as AC and Induction Motors, Couplings, Gears, Pulleys, Pumps, and other components. Single and double gear shafts allows users to model many kinds of gear boxes with an unlimited number of stages. This ability alone lets users model their machines to view and use to keep track of vibration pickup locations, record the forcing frequencies of each part of the system, and attach attributes such as manufacturer and other part information.
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Engineering Data Management SOoftware
EDM Modal
Engineering Data Management (EDM) is a PC-based software program designed for real-time data management and processing. This easy-to-use, Windows-native software manages the communication between the PC and all Crystal Instruments hardware platforms. EDM Modal is a complete Modal Testing and Modal Analysis suite for Experimental Modal Analysis (EMA). EDM Modal was developed based upon the sophisticated technologies of modern modal analysis theory and technique. With its intuitive controls and powerful features, EDM Modal is the ultimate tool for modal analysis applications. An intuitive interface allows users to manage highly complicated tests that can involve hundreds of measurement points and multiple excitations. This interface also allows for simple tests to be conducted quickly and with little effort. Regardless of how complicated the modal test is, EDM Modal provides the exact and precise tools required to achieve your goal.
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MIMO Vibration Control Overview
MIMO Testing has gained a huge momentum in the past decade with the development of multiple shaker table systems, the availability of Multiple-Input Multiple-Output (MIMO) controllers, and the readiness of the standards (e.g., Mil STD 810G method 527 and IEST DTE 022 working group recommendation). The Multiple-Input Multiple-Output (MIMO) Control System includes the following:
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Dynamic Signal Analyzer & Data Recorder
Spider-20
The Spider-20 series of products are compact yet powerful data acquisition and dynamic measurement systems. These units provide four 24-bit precise high-fidelity input channels, and a unique software-selectable tachometer-input/signal-source output channel. Each input is individually programmable to accept AC or DC voltage or output from an IEPE (ICP) sensor with built-in electronics. Input channels can be programmed to sample up to a rate of 256 kHz. The Spider-20E is a small scale (5 ⁵/16 x 4 ⁵/16 x 1 ⁵/16 inch) device weighing only 18 ounces. This handheld unit features three push-button controls and five LED status indicators. This little powerhouse can run over 6 hours on its internal rechargeable battery which can be replaced in the field with a backup battery.
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Structural Testing Application Examples Using EDM Modal
Illustrated below are some customer applications in varying industries who are using the hardware and software by Crystal Instruments to analyze and understand the structural properties of their test specimen(s). Analyzing the modal characteristics namely natural frequencies, damping and mode shapes of the test unit further helps in improving the design to enhance the mechanical behavior of the test unit.
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Acoustic Control
Acoustic Control provides accurate control for high-level noise testing of reverberant chambers or progressive wave tubes. Based on the Spider hardware platform, Acoustic Control achieves quick and reliable control of the noise level to the reference octave spectrum and the overall sound pressure level (OASPL). Included safety features guarantee the safety of the unit under test.
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Operational Modal Testing
EDM Modal Operational Modal Testing (OMA Testing) includes a dedicated test setup and operation process flow using ambient vibration data. Using a large channel count data acquisition system (e.g., Spider- 80X or Spider-80Xi), the excitation method provides a much higher efficiency and accuracy for FRF measurements while minimizing local stresses on the test article.
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Remote Condition Monitoring Software
The specially designed EDM-RCM software simultaneously connects multiple such Spider systems in addition to providing updated results of essential data for all Spider front-ends located throughout the world. The software provides a live view of data from any Spider system as needed and downloads recordings from any or all Spider front-ends for further analysis and inferences.
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Machine Vibration Monitoring Devices & Systems
Spider-80x
*Route Based Vibration Data Collection*Remote Condition Monitoring Software*Vibration Diagnostics System
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Vibration Visualization
DSA
It is difficult to imagine the actual vibration level and distribution from the numerical display or the signals which are basically a mathematical representation of the vibration experienced by the structure under test. Animating the structure’s deformation helps to get a better picture of the intensity of vibration. A contour scale which graphically displays the magnitude of vibration on the structure using a color plot helps in visualizing which areas of the test unit is experiencing maximum and minimum magnitude of the vibrations.
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Order Tracking Analysis
Order Tracking is a general term describing a collection of measurement functions used for analyzing the dynamic behavior of rotating or reciprocating machinery for which the rotational speed can change over time. Unlike the power spectrum and other frequency-domain analysis functions where the independent variable is frequency, Order Tracking functions present the data against multiples (Orders) of the variable shaft running speed.
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Standard Modal Analysis
EDM Modal Standard Modal Analysis provides the user with a complete arsenal of tools, from FRF data selection and parameter identification to results validation and mode shape animation.
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Shock Response Spectrum Analysis
A Shock Response Spectrum (SRS) is a graphical presentation of a transient acceleration pulse’s potential to damage a structure. It plots the peak acceleration responses of a bank of single degree-of-freedom (SDOF) spring, mass damper systems all experiencing the same base-excitation as if on a rigid massless base. Each SDOF system has a different natural frequency; they all have the same viscous damping factor. A spectrum results from plotting the peak accelerations (vertically) against the natural frequencies (horizontally).
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Multiple-Input Multiple-Output (MIMO) Sine Test
EDM Modal Sine Testing includes a dedicated test setup and operation process flow using a single or multiple modal shakers outputting a sine wave to acquire FRF signals. The Source Output type is either Swept sine or Stepped sine. The sweep mode can be linear or logarithmic. The FRF signals of each measurement DOFs with respect to defined reference DOF will be constructed. The output drive level can be defined to run the test under no control strategy, or the response of a control channel can be specified to run the test in a closed loop.
