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傳感器(如磁鐵和天線)是脈沖NMR測井儀的核心部分。它對(duì)儀器的S／N、最小回波間距、探測深度(DOI)、測井速度和垂直分辨率有重要影響。在用的所有儀器在傳感器的設(shè)計(jì)上都不盡相同，主要差別是電子線路、固件、脈沖序列、數(shù)據(jù)處理和解釋算法。NMR儀器的詳細(xì)技術(shù)指標(biāo)都能在各家服務(wù)公司的網(wǎng)站上找到。
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