Ground conductivity meter

[orangelamp]

hello, can anyone tell me some information like its application, the difference between EM series and EH-4?Additionally, are the EM series still popular in survey right now? I must hold on, or else too much question to reply
Thanks a lot, wish Happy New Year !!

 

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[99thpercentile]

Could you please elaborate? I'm not really sure what you are asking. What are the EM series and EH-4? There are a number of ground conductivity meters used everyday in geophysical surveys.

Geonics
Geophex
DualEM
GSSI