Thermo Electron Ramsey ORETRONIC III, Руководство по эксплуатации и обслуживанию

Страница: 85 / 143

ORET RONIC
™
Tramp Metal Detector
R E C 4 1 0 5 4 - 1 7
7 . T o ma n u a l l y ad j u s t t h e me t a l s e ns i t i v i t y v a l u e s , p l a c e t h e T M D i n
C a l i b r a t e mo d e a n d sc r o ll t o th e
FINE
d i s p l a y .
8 . U s i n g t h e d o wn
VALUE
k ey , i n c r e a s e t h e
FINE
s en si t iv ity v a lu e
b y 1 0 a n d p r e s s
ENTER
.
9 . P l a c e t h e T M D i n R u n mo d e an d p a s s t h e t es t t r a mp t h r o u g h t h e co i l s.
I f th e T M D t ri p s, t h e
FINE
s en si t i v i t y v a l u e i s s et co r r e c t l y .
I f t h e T M D d o e s n o t t ri p , r ep e a t S t e p s 7 – 9 u n t il y o u f in d a f in e
s e n s i ti v i ty v a lu e t h at w i l l t ri p t h e d et e c t o r e v e r y t i me . I f t h e
FINE
v a lu e
r e a c h e s 9 5 0 an d t h i s i s s t i l l n o t se n si t i v e en o u g h , y o u s h o u l d a d j u s t t h e
c o a r s e s en si t i v i t y v a l u e . Go o n t o
S t ep 1 0 .
1 0 . P l a c e t h e T M D i n C al i b r a t e mo d e a n d s cr o l l t o t h e
COARSE
d i sp l ay .
1 1 . U s i n g t h e u p
VALUE
k ey , i n cr e as e t h e
COARSE
v a lu e b y 1 an d p r e s s
ENTER
.
1 2 . P l a c e t h e T M D i n R u n mo d e , p a ss t h e t e st t r a mp t h r o u g h t h e c o i l s, a n d
c h e c k f o r a t r i p .
I f th e s e n sit i v i ty i s st il l n o t c o rr ec t fo r y ou r sy s t e m, r ep e a t S t ep s 7– 12 o f th is
p ro c e d u r e u n t il it i s .
I f t h i s p r o c e d u r e d o e s n o t i n c r e a s e t h e s e n s i t i v i t y e n o u g h , t r y t h e p r o c e d u r e s
i n
F i n d i n g t h e S o u r c e o f M e c h a n i c a l o r E l e ct r i c a l N o i se o n p a g e 4 - 6 . F o r a
d u al co il TM D , y o u ca n al s o t ry l o w e ri n g th e t r an s mi t te r c o i l to th e mi n i mu m
h e i g h t p o s si b l e ( r e f e r t o
O u t l i n e, M o u n t i n g a n d A s s e mb l y, C o i l S t a n d
( D 0 7 3 2 8 C - A 0 0 3 ) .
I f t h e s e s t ep s d o n o t r e s u l t i n a d e q u at e s en si t iv ity , y o u ma y n e ed t o c h an g e
t h e ma t e r i a l ty p e co d e.
N o t e : Ad ju st ing met a l sen si ti vity i s p e rformed t h e same fo r b o th do ub l e an d
s i n g l e c o i l d e t e c t o r s.
4.5.2 Changing the Material Type Code to Adjust Sensitivity
D e t e c t i n g sma l l - s i z e d t r a mp me t a l , e sp e c i al l y s ma l l st ai n l e s s s t e el t r a mp ma y
r e q u i r e c h a n g i n g t h e m a t e r i a l t y p e c o d e u sed by th e TM D. Th i s may n o t
r e s u l t i n a d r a ma t i c s en s i t i v i t y i n c r e a s e b e c au s e a r ed u ct i o n o f 1 / 2 i n t r a mp
s i z e ma y r es u l t in a r ed u ct io n o f o n ly 1 /4 t o 1 / 1 6 o f th e s ig n al ; th e s ig n al
r e d u c t i o n i s a f u n c t i o n o f b o t h s i z e a n d t y p e .