| The model CMS320M SmartMic�, an adjustable direct contact wire measurement system that features a manually adjustable anvil gram pressure, has been recently introduced by Fort Wayne Wire Die Inc., USA. This new system is suited for measuring ultra-fine wire down to 0.012mm. The CMS320M also works well with applications such as measuring stranded or insulated wire and spring diameters, or thickness of soft materials where lower contact pressure is desirable. A small table top, PC-based direct-contact micrometer, the machine enables the outside diameter and roundness of a wire sample to be precisely measured. A data acquisition programme is included for data storage and retrieval. This measurement system is more accurate than conventional measurement methods. It will eliminate the cosine error that is found in non-contact measurement methods, has an increased reliability factor and includes a temperature compensation probe that adjusts measurement readings for any change in temperature. The measurement repeatability factor of the CMS320M is � 0.30�m.
The CMS320M is designed to be used in the die room of a wire drawing facility for incoming die inspection, in-process inspection, and final measurement quality control of the end product where record keeping and quality documentation are essential. The system features adjustable anvil pressure settings to prevent wire deformation of ultra-fine wire, which allows accurate wire sample measurements from 0.012mm to 3.65mm. Anvil contacts are made from polished polycrystalline diamond to give the user exceptional repeatability and minimise wear even when the wire is rotated. A physically calculated linear formula and XXX Class gauge pins traceable to the NIST (National Institute of Standards and Technology) are the backbone of the software programme that controls the CMS320. A temperature compensation probe monitors the temperature changes of the gauge block throughout the workday and calculates adjustments to compensate for these changes thus maintaining accurate measurements 24 hours a day.
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