("'9
Contents
1 Introduction...........................................................................................................................4
%0%!:0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ;
%08 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000<
%0'*!00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,
=4*00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,
=4*0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000-
2 First encounters...................................................................................................................10
80%/$*$*0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
8080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
80' '90000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%%
80(0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 %8
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 %8
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%<
000000000000000000000000000000000000000000000000000000000000000000000000000000000000%,
80;$*0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 %>
.*00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008
*0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 8%
$000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 8%
3 Installing the 3V in a borehole........................................................................................ 22
'0%74*000000000000000000000000000000000000000000000000000000000000000000000088
'087 *:00000000000000000000000000000000000000000000000000000000000000000000008,
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008-
'0' 40000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'8
'0. 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'-
74($4$$000000000000000000000000000000000000000000000000000000000000000000000000'-
74($4$$00000000000000000000000000000000000000000000000000000000000000000000000 8
.$00000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
'0;2)000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
4 Calibrating the 3V..............................................................................................................4
0%( 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000<
08( 4?0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,
0'( 40000000000000000000000000000000000000000000000000000000000000000 -
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 >
5 Inside the 3V....................................................................................................................... 50
;0%000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
;08!000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ;8
2(100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;8
/2(10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ;'
8