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CALIBRATION FEATURE


process measurement results immediately. When integrated into the accelerometer calibration workstation, the system delivers accurate results quickly and effectively. In addition, with the LabWindows/CVI


Integrating NI equipment into the systems means users are reaping the benefits of proven technology that has been used successfully in systems worldwide


platform, the company created software that simplifies the calibration process from beginning to end. Being a flexible programming environment, LabWindows/CVI is designed to make software generation customisable. In addition, it greatly simplifies the task of vibration calibration because process complexities are well-controlled in the software, keeping the user interface simple to navigate and easy to use. Further benefits included confidence in


BUILDING A SOLUTION for accelerometer calibration


The use of hardware and software from National Instruments has enabled The Modal Shop to build a new range of reliable vibration calibration systems which are being used in laboratories and research facilities worldwide


P


art of the PCB Group, The Modal Shop not only provides PCB sensor


products but its research and development projects focus on dynamic calibration and smart sensing. The company therefore offers a large range of vibration calibration systems. Traditional accelerometer calibration


required slow, complex, front ends to measure sensor data and electronics to accurately drive the shaker. These elements, however, make system operation difficult. While it is important to conform to standards such as ISO 16063 and ISO 17025, systems must also deliver accurate and reliable results, be automated and easy to use, and offer a feasible cost of ownership. So, when building a new automated accelerometer calibration station, this needed to comply with standards while achieving these goals. To help, the company selected an


NI PCI-4461 data acquisition module and NI LabWindows/CVI software for its Model 9155 Accelerometer Calibration Workstation. The Model 9155 is a solution for laser primary calibration; linearity checking; low-frequency calibration down to 0.1Hz; shock calibration up to 10,000g; and resonance, transverse, and dynamic pressure calibration.


EQUIPMENT SELECTION The Modal Shop selected NI equipment


As part of the Calibration workstation, the Windows based control software has been designed to provide accurate calibrations and an easy-to-use graphical user interface


National Instruments uk.ni.com Enter 660


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for a number of reasons. Firstly, the NI PCI-4461 creates a fast data acquisition solution. It provides both high-resolution, 24-bit analogue inputs to accurately measure sensor performance and 24-bit analogue outputs to drive the shaker in a single PCI device. In previous systems, settling time hindered data acquisition hardware when taking measurements with a digital multimeter and function generator. The PCI-4461 consolidates the data acquisition system into one internal unit that can


the equipment as a result of choosing the right hardware components and software, ensuring a great customer experience. Integrating NI equipment into the systems means users are reaping the benefits of proven technology that has been used successfully in systems worldwide. The Model 9155 system has proved to


be a success and is now being used in dozens of national labs and worldwide research institutions as a proven and trusted vibration calibration solution.


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