WEI HAISUNFULLGEOPHYSI CALEXPLORATI ONEQUI PMENTCO. , L TD. NO. 1 5 1 7 7HEXI NGROAD, HI TECHDEVELOPMENTZONE, WEI HAI , SHANDONG, CHI NA Sel f c ompens at i ng bor ehol ev i br at i ondet ec t i ondev i c e Thepr oductadopt st heel ect r oni cal l ycont r ol l edpus h-l eancoupl i ngmode, whi chi smai nl yus edf ors ei s mi cwav er ecept i oni ndr i l l i ng. Si ngl ecomponent or t hr eecomponent geophonecanbei ns t al l edi ns i de, whi chi ss ui t abl ef ordr i l l i ng wi t hdi amet er sof 90-140mm. Pr e-pr es s ur es pr i ngsar ei ns t al l edi nt hei nt er i or , whi chcans el f -compens at epus h-backaccor di ng t oacer t ai nchangeof bor ehol edi amet er , andt henachi ev et hepur pos eof goodcoupl i ng. Mai ns peci f i cat i onsandt echni cal i ndi cat or s ： Di amet er : 59mm Lengt h: 800mm Wei ght : 6. 5Kg Di amet err ange: 90-140mm Max i mumdept h: 150M GLOBALMANUF ACTUREANDSUPPLI EROFGEOPHONES, CABLESANDCONNECTORS