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The CCL-2a / PS-2a GO/GOI/MLS COSMOS Downhole Casing Collar Locator (CCL) Amplifier Upgrade printed circuit board (PCB) is a simple and reliable Comprobe style downhole CCL amplifier combined with the dual low voltage power supply used in the GO/GOI/MLS COSMOS radiation tool. The stock CCL amplifier in COSMOS tools is truly awful, and this drop-in replacement for the stock CCL / low voltage supply PCB provides a dramatic improvement in CCL performance. See our GO / GOI / MLS COSMOS Tool Notes for additional information on the COSMOS downhole CCL amplifier. This PCB is usually installed in conjunction with converting COSMOS tools to 120 volt operation. It uses readily obtainable components, which parts will continue to be available for many years to come, and it uses convenient turret terminals for wiring connections. Also see Application Note CCL-2 for detailed application and installation information. Due to time constraints on maintaining this website, the PCB illustrated below may not be the most recent revision of the board and / or circuit.
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