42
The
t
e
c
hnique
us
e
d t
o de
t
e
r
m
ine
t
he
pos
it
ion of
a
Sonde
is
a
lw
a
y
s
t
he
s
a
m
e
ir
r
e
s
pe
c
t
iv
e
of
w
hic
h Sonde
is
be
ing us
e
d.
B
e
f
or
e
ins
e
r
t
ing t
he
Sonde
int
o t
he
pipe
it
is
be
s
t
t
o s
e
t
up t
he
Loc
a
t
or
s
o t
ha
t
t
he
Se
ns
it
iv
it
y
is
c
or
r
e
c
t
ly
a
djus
t
e
d t
o s
uit
t
he
pipe
de
pt
h.
This
is
m
uc
h e
a
s
ie
r
t
o do w
he
n t
he
Sonde
is
v
is
ible
a
t
t
he
bot
t
om
of
t
he
m
a
nhole
r
a
t
he
r
t
ha
n a
lr
e
a
dy
s
om
e
dis
t
a
nc
e
up t
he
pipe
.
The
bla
de
of
t
he
Loc
a
t
or
m
us
t
be
he
ld IN
LIN
E w
it
h t
he
Sonde
a
t
a
ll t
im
e
s
.
1
. Tu
r
n
th
e
L
oc
a
tor to G
e
n
e
ra
tor
/ Tra
n
sm
itte
r Mode and switch on.
For th
e
M
XL
4
L
oc
ator
, the
corre
c
t fre
qu
e
n
c
y m
u
st also be selected.
Che
c
k th
e
Ba
tte
ry L
eve
l I
n
dica
tor to c
on
firm
th
e
L
ocator batteries
a
re
usa
ble. Re
pla
c
e
if n
e
c
e
ssa
ry.
2
. K
ee
pin
g th
e bla
de
of th
e
Loc
a
tor in
lin
e
with
th
e
Sonde, move the Locator
ba
c
k
wa
rds a
nd for
wards
ove
r th
e
le
ngth
of th
e
S
onde. Adjust the Sensitivity
u
n
til a
c
lea
r pe
ak re
sponse
is show
n on
th
e
displa
y as the Locator passes
direc
tly ove
r th
e
position of th
e S
on
de
.
Still keeping the blade of the Locator in line with the Sonde, now move
the Locator from side to side over the position of the Sonde. A similar
peak response should be seen on the display as the Locator passes
directly over the position of the Sonde. The Locator is now set up
ready for tracing the Sonde.
3. Push the Sonde up the pipe.
Non
-Metal
l
i
c Pi
pe Tracin
g:
Traci
n
g a Son
de
NOT
E
Thi
s i
s a
t 90º to the
wa
y i
n whi
c
h the
Loc
a
tor
i
s he
l
d
for most o
ther lo
cating tasks.
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