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Category: PCM MicroMag 2900 AGM

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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A Probe Safety Clip for the MicroMag 2900 AGM

A Probe Safety Clip for the MicroMag 2900 AGM

This is a little project I finished some time ago to address one recurring problem with the PCM MicroMag AGM. The AGM probe is held to the transducer by a 7 pin connector (Amphenol/WPI 126 Series Miniature Hexagonal Connector), as shown in the picture. Initially, the pins sit snug in the receptacle and hold the heavy probe in place. However, frequent plugging and unplugging, as common during use, leads to the pins becoming less tightly fit. The probe is then…

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Repairing a Probe for the PMC MicroMag 2900 AGM

Repairing a Probe for the PMC MicroMag 2900 AGM

Above is a picture of the AGM probe. The sample carrier (quartz slide) can be seen on the right end of the probe. The quartz slide is attached to a thin polyimide tube that is itself attached to a piezo-like sensor to detect the deflection. The quartz and the tube tend to break easily over time. Sending the probe in for repair is costly and therefore I sought ways to repair the probe myself. Broken parts (either quartz or tube)…

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