Magnetometer min. 1 nT | EM2 至少1新臺幣| EM2磁強計

Description
描述
The Earth Magnetometer Model EM2 measures small variations from location to location in the Earth magnetic field associated with buried magnetic masses. Unlike metal detectors, a magnetometer signal is not attenuated by rock, dirt, mud or water, so targets can be detected at great depth. (If D is the diameter of a mass of magnetizable material, the EM2 can detect it as deep as 40 times the diameter D, whether the mass is specifically magnetized or not.) It is the lightest weight and lowest cost magnetometer available which can reliably measure differences down to 1 nT from point to point. (Because of random fluctuations in the Earth field due to the ionosphere, 1 nT is about the finest usable resolution.)
地球儀模型EM2措施變化小的位置在地球磁場與磁相關掩埋群眾。與金屬探測器不同的是，磁力計的信號是不衰減的巖石，灰塵，泥漿或水，所以目標可以檢測到在很大的深度。（如果D是大量磁性材料，直徑的EM2能探測到深40倍直徑D，無論是大眾特別是磁性。）它是重量最輕、最低的成本能可靠地測量磁力儀差異降到1新臺幣的點對點。（由于電離層的隨機波動，1新臺幣是關于最好的可用分辨率。）

Magnetometer min. 1 nT | EM2 至少1新臺幣| EM2磁強計