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8 SIMPLE FAULT FINDING
8.1 Error Messages
If erroneous or unexpected results are obtained the fault may be
indicated by an error message – see Table 8.1. However, some
faults may cause problems with analyzer calibration or give
discrepancies when compared with independent laboratory
measurements.
E
r r
r o
M
e
s s
a
g
e
T
e
m
p
e
A
:
F
A
U
L
T
Y
P
t
1
0
0
c
o
n
n
c e
A
:
F
A
U
L
T
Y
P
t
1
0
0
0
c
c r i
t i u
T
e
m
p
e
B
:
F
A
U
L
T
Y
P
t
1
0
0
c
o
n
n
c e
B
:
F
A
U
L
T
Y
P
t
1
0
0
0
c
c r i
t i u
f I
T
e
m
. p
5
3 .
, )
h t
f i
h t
e
m
B
E
L
O
W
C
O
M
P
R
A
N
G
E
a f
s l l
b
e
c
o
m
p
e
f I
a
c c
u
a v
u l
, e
T
h
e
p
e r
B
E
F
O
R
E
C
A
T
.
H
I
G
H
a c
o i t
n
s
e e
A
p
T
h
e
c
o
c
o
u l
m
B
E
F
O
R
E
C
A
T
.
L
O
W
a v
u l
e
f
s i
s
l e
c e
T
h
e
c
o
A
F
T
E
R
C
A
T
.
H
I
G
H
c
o
u l
m
–
s
e e
T
h
e
a c
o
u
s t
d i
e t
m
p
e
a s
m
p
) e l
r o
o
u
s t
d i
I
n
f
r
.
p
H
i
n
v
a
l
i
d
e t
m
p
e
d
o
e s
d
N
t o
. e
b
c e
o
m
c
o
n
d
u
h t
a
n
h t
Table 8.1 Error Messages
68
P
o
s s
b i
e l
C
a
u
s
e
a r
u t
e r
c
o
m
p
e
n
a s
o t
/ r
s a
o s
c
a i
e t
d
o i t
n
f s
r o
S
e
s n
r o
A
a
e r
e
h t i
r e
o
r o
h s
o
t r
c
c r i
u
. t i
a r
u t
e r
c
o
m
p
e
n
a s
o t
/ r
s a
o s
c
a i
e t
d
o i t
n
f s
r o
S
e
s n
r o
B
a
e r
e
h t i
r e
o
r o
h s
o
t r
c
c r i
u
. t i
s i
s
t e
o t
s (
e e
S
c e
o i t
C
o
m
. p
N
H
3
e
n i
i d
a c
e t
d
c
o
n
d
u
c
v i t
y t i
a v
u l
e
a l f
a e
u s
e r
d
c
o
n
d
u
c
v i t
y t i
f o
h t
e
a s
o l
w
h t
e
a
c c
u
a r
e t
e t
m
p
e
a r
u t
e r
n
a s
o i t
n
a r
n
g
. e
a r
e t
r
a e
d
n i
s g
a
e r
e r
q
u
e r i
d
b
e
o l
s
t e
o t
.
T
e
m
. p
C
o
m
. p
U
P
W
s -
t e
c
o
n
d
u
c
v i t
y t i
a v
u l
e
b
e
o f
e r
r
s e
n i
c
o
u l
m
n
h
s a
b
e e
n
e
c x
e e
d
p
e
n
d
x i
A
. 3
n
d
u
c
v i t
y t i
a v
u l
e
b
e
o f
e r
h t
e
a c
o i t
n
h
s a
a f
e l l
n
b
e
o l
w
h t
e
c a
e c
p
a t
b
r o
e r
a i l
b
e l
r
a e
d
n i
s g
w
h
e
n
f n i
r e
e r
e t
d
–
s
e e
A
p
p
e
n
d
x i
A
. 3
n
d
u
c
v i t
y t i
a v
u l
e
a
t f
r e
h t
e
a c
o i t
n
n
h
s a
e
c x
e e
d
e
d
h t
e
p
o r
g
a r
m
m
e
A
p
p
e
n
d
x i
A
. 3
c l
u
a l
e t
d
(
f n i
r e
e r
) d
p
H
s i
e
h t i
e
: r
e
h t
e
a r
n
g
e
7
0 .
0
o t
1
0
0 .
0
p
H
f i
N
a r
u t
e r
c
o
m
p
e
n
a s
o i t
n
f (
r o
a
N
H
3
s i
s
l e
c e
e t
d
s (
e e
S
c e
o i t
n
. 5
) 3
e
h t
e
a r
n
g
e
7
0 .
0
o t
1
1
0 .
0
p
H
f i
N
a r
u t
e r
c
o
m
p
e
n
a s
o i t
n
f (
r o
a
N
a
O
a s
m
p
) e l
s i
s
l e
c e
e t
d
s (
e e
S
c e
o i t
n I
h t
e
a l
t t
r e
c
s a
, e
h t
e
a c
c l
u
a l
o i t
s e
n i
a v
d i l
f i
h t
e
f a
e t
- r
a c
o i t
n
c
v i t
y t i
a v
u l
, e
m
t l u
p i
e i l
d
y b
, 3
s i
g
e
b
f e
r o
- e
a c
o i t
n
a v
u l
. e
8.2 No Response to Conductivity Changes
The majority of problems are associated with the conductivity
cell which must be cleaned as an initial check. It is also important
that all program parameters have been set correctly and have
not been altered inadvertently – see Section 5.
If the above checks do not resolve the fault:
a) Check the analyzer responds to a resistance input.
Disconnect the conductivity cell cable and connect a
suitable resistance box directly to the analyzer input – see
p
e
n
Section 7.2. Select the
Temp.Comp.
displays the correct values as set on the resistance box – see
p
e
n
Table 8.2 or use the expression:
n
K x 10
R =
h s
s e
G
m
p
e l
Where: R = resistance
K = cell constant
w
h t
s i
G = conductivity
h t
e
e
d
–
C
o
n
d
u
t c
i v i
y t
S
c
m
–
1
(
) G
n
r
s e
n i
0
0 .
5
5
e l
d
p
H
0
1 .
0
5 .
r
s e
n i
1
d
l
m i
t i
5
1
0
H
3
5
0
d
o
e s
d
1
0
0
5
0
0
a
O
H
1
0
0
0
H
n
. 5
) 3
5
0 ,
0
0
1
0
0 ,
0
0
n
Table 8.2 Conductivity Readings for Resistance Inputs
e r
t a
r e
CONFIG. SENSORS
to
– see Section 5.3. Check the analyzer
None
6
C
l l e
C
o
n
s
a t
n
( t
0
0 .
5
0
1 .
R
e
s
s i
a t
n
c
e
(
) R
9
0
9
0 .
9
1
k
–
1
5
0
0
k
M
1
0
0
k
2
0
0
k
5
0
k
1
0
0
k
1
0
k
2
0
k
5
k
1
0
k
1
2
k
k
1
5
0
0
k
1
0
0
2
0
0
–
1
0
0
–
–
–
–
page and and set
) K
1
0 .
–
–
–
1
M
2
0
0
k
1
0
0
k
2
0
k
1
0
k
2
k
1
k
2
0
0
1
0
0
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