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Month: March 2017

Troubleshooting the XRF Detector

Troubleshooting the XRF Detector

Some time ago we received donated equipment through the Laboratory Equipment Donation Program (LEDP,¬†www.osti.gov/ledp/). It was a Kevex Omicron XRF machine. It was in very good shape and after setting up an old Windows 98 computer to run the control software, I began testing the instrument. The x-ray source seemed to work fine, but I just couldn’t receive any signal from the detector except some spurious counts that didn’t make any sense. I therefore took a closer look at the…

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Upgrading the MicroMag 2900 AGM Linear z-Slide

Upgrading the MicroMag 2900 AGM Linear z-Slide

The design of the MicroMag 2900 AGM has a few shortcomings. One of them is the linear z-slide mechanism that the instrument came initially equipped with. It is a Velmex Manual UniSlide (Model # SPA2509DM-S2.5, see picture) with Rapid Advance, scale, and Vernier. The slide features a limited fine adjustment by means of a clamping-like drive that can be engaged/disengaged by operating a lever (B). When engaged the slide is clamped onto the center rod (C) which can be fine…

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