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防护器材的铅当量是在实验室内通过严格的测量获得的。在铅当量测量中，需要满足两个条件，即设备条件和几何条件。设备条件包括：一系列不同厚度高纯铅吸收片，稳定的Ｘ射线机，小角度光阑，准直器，小电流计以及符合能响要求的电离室。几何条件主要考虑射线源、电离室及铅吸?
The lead equivalent of protective equipment is obtained through rigorous measurements in the laboratory. In the measurement of lead equivalent, two conditions need to be met, namely the equipment condition and the geometry condition. Equipment conditions include: a series of high-purity lead absorbers of different thicknesses, a stable X-ray machine, a small aperture stop, a collimator, a low-current meter, and an ionization chamber that meets the demanding requirements. Geometric conditions mainly consider ray source, ionization chamber and lead suction?