INFICON Gemini ATM to Ultra-High Vacuum Gauge - Manual (Page 49)

tina83e1-a (2014-02) 49
Corre
ction
Tur
n
on
pow
er
sup
p
ly
.
R
epl
ace i
oni
zati
on
ch
am
-
ber
or
m
eas
ur
ing c
h
am
-
ber
cpl
.(→

43
, 4
5
).
Sw
itch on
th
e hi
gh
vol
tag
e (
→

28)
.
Evacua
te the
vacu
um
system to <1
0
-2
m
bar
and
sw
itch the
ga
ug
e of
f a
nd
on a
gai
n vi
a "H
V ON
".
W
a
it, unti
l t
he
gas
di
s-
char
ge has
igni
te
d
(≈
5 m
inutes
at
a pr
ess
u
re
of 1
0
-9
mb
a
r).
Sw
itch th
e g
aug
e o
ff a
nd
on a
gai
n aft
e
r 5 s.
R
epl
ace the
ga
uge
.
R
epl
ace the
m
easur
in
g
cham
ber
c
p
l. (
→

45)
.
Possible
ca
use
No
su
pp
ly vo
ltag
e
.
Gaug
e co
ntam
in
ate
d
.
N
o
hi
gh
vol
ta
ge i
n th
e
m
easur
ing c
ham
be
r.
Over
pr
essur
e
in
th
e
m
easur
ing c
ham
be
r.
Gas
di
sch
ar
ge has not
igni
ted
.
EEPR
OM
er
ro
r.
M
easur
ing c
ham
be
r
severely co
ntamin
ate
d.
Status signal
0 0 0 0 0
14.5
…
30 V
LED
off
lid
so
lid
gr
een off
b
lin
kin
g
gr
een off
lid
so
lid
gr
een
LED
off
lid
so
lid
gr
een
lid
so
lid
gr
een
lid
so
lid
gr
een
bl
in
ki
ng
red
lid
so
lid
gr
een
Problem N
o
vol
ta
ge
at si
gnal
o
ut
put.
M
easur
ing si
gnal
unst
abl
e.
Vol
tag
e a
t si
gn
al
o
u
tp
ut
1.2
V (3MAx-xxx-0x0
N
)
0.4
V
(3MAx-xxx-0x0Q
).
Vol
tag
e a
t si
gn
al
o
u
tp
ut
con-
tinual
ly
< 0.3 V
(3MAx-xxx-0x0
N
)
< 0.5 V
(3MAx-xxx-0x0
Q
).
Si
gnal
c
onti
nual
ly
a
t a
ppr
ox.
5×
10
-4
m
bar
.