Hach BioTector B7000i - Page 82

Page 82
pH Test, Phase 3:
P
H
T
E
S
T
0
9
:
1
7
:
2
8
1
2
-
0
9
-
0
2
1
<
R
A
N
G
E
,
V
A
L
V
E
1
,
S
T
R
E
A
M
1
2
M
O
D
E
T
I
C
+
T
O
C
3
S
T
A
R
T
T
E
S
T
4
T
A
K
E
S
A
M
P
L
E
5
C
O
N
T
I
N
U
E
T
O
N
E
X
T
P
H
A
S
E
6
S
T
O
P
T
E
S
T
T
I
M
E
0
s
P
H
A
S
E
P
A
U
S
E
D
M
F
C
=
0
.
0
l
/
h
C
O
2
=
1
5
0
.
8
p
p
M
T
E
S
T
T
I
C
p
H
.
E
X
P
E
C
T
E
D
p
H
<
2
.
W
H
E
N
F
I
N
I
S
H
E
D
,
S
E
L
E
C
T
N
E
X
T
A
C
T
I
O
N
F
R
O
M
M
E
N
U
.
At this phase, the sample and TIC acid are added to the reactor and mixed together. The system then pauses
to allow the pH to be tested. The user now has 3 options:
4. Take Sample. It can be difficult to take the sample, so to aid this, press this menu item once to pulse the
Sample Out Valve for 0.5s. This will allow a small volume of sample to pass through the valve, and this
can be tested with a pH paper. Several activations of the valve may be required to purge the Sample Out
Valve of any old sample, and get a fresh sample for the test.
5. Continue To Next Phase. If this is selected, the program continues to the next phase.
6. Stop Test. If this is selected, the program jumps to the reactor purge phase.
pH Test, Phase 4:
P
H
T
E
S
T
0
9
:
1
7
:
2
8
1
2
-
0
9
-
0
2
1
<
R
A
N
G
E
,
V
A
L
V
E
1
,
S
T
R
E
A
M
1
2
M
O
D
E
T
I
C
+
T
O
C
3
S
T
A
R
T
T
E
S
T
4
T
A
K
E
S
A
M
P
L
E
5
C
O
N
T
I
N
U
E
T
O
N
E
X
T
P
H
A
S
E
6
S
T
O
P
T
E
S
T
T
I
M
E
0
s
P
H
A
S
E
P
A
U
S
E
D
M
F
C
=
0
.
0
l
/
h
C
O
2
=
1
5
0
.
8
p
p
M
T
E
S
T
B
A
S
E
p
H
.
E
X
P
E
C
T
E
D
p
H
>
1
2
.
W
H
E
N
F
I
N
I
S
H
E
D
,
S
E
L
E
C
T
N
E
X
T
A
C
T
I
O
N
F
R
O
M
M
E
N
U
.
At this phase, the base is added to the solution in the reactor and mixed together. The program then pauses
to allow the pH to be tested. The user now has 3 options, which are the same as in the previous phase.