23
Table 4.1 Calibration Messages
4
SETUP…
…4.1
Sensor Calibration
4.1.4
Automatic, Single- and Two-Point Calibration (pH Only)
Sensor A: Buffer Method (pH probes only)
Select the type of automatic calibration required:
Auto 1-Pt
– Automatic, single-point calibration
Auto 2-Pt
– Automatic, two-point calibration
Calibrate Buffer
(Single-Point Calibration)
or Calibrate Buffer 1
(Two-Point Calibration)
Immerse Sensor A in the buffer solution.
Press the
key to initiate calibration.
Note.
To abort calibration, press the
key again at any time before calibration is
complete – see below.
The center display line shows the measured sensor output in millivolts.
As calibration procedes, a progress indicator appears in the lower display line. When the
measured sensor output stabilizes, the lower display line shows
##### 100% #####
.
The display then changes for 2 seconds to show the temperature-corrected buffer value in
the upper display line, then advances automatically to the next frame.
Two-point calibration selected – continued on next page.
Single-point calibration selected – continued on next page.
Abort Calibration
Select Yes or No.
Yes
selected – return to the main menu.
No
selected – calibration continues.
#### 100% ####
175
mV
A: Immerse Buf.2
A: Calibration
A: Abort Cal.
-----
Yes
A: SENSOR CAL.
A: Immerse Buf.2
A: Immerse Buf.1
4.00
pH
Deg.C
25.0
A: Buffer Method
Auto
-----
1-Pt
A: Cal. Buffer 1
4.01
pH
n
o
i
t
a
r
b
i
l
a
C
e
g
a
s
s
e
M
.
n
i
M
.
x
a
M
n
o
i
t
a
n
a
l
p
x
E
n
o
i
t
c
A
n
o
i
t
a
r
b
i
l
a
C
d
e
s
s
a
P
%
0
7
o
t
0
4
%
5
0
1
d
e
t
p
e
c
c
a
e
r
a
s
t
n
e
i
c
if
f
e
o
c
n
o
i
t
a
r
b
il
a
c
w
e
n
e
h
T
e
n
o
N
n
o
i
t
a
r
b
i
l
a
C
e
p
o
l
S
w
o
L
%
0
9
o
t
0
6
%
0
9
o
t
0
6
d
e
t
p
e
c
c
a
e
r
a
s
t
n
e
i
c
if
f
e
o
c
n
o
i
t
a
r
b
il
a
c
w
e
n
e
h
T
–
d
e
u
g
i
t
a
f
g
n
i
m
o
c
e
b
e
r
a
r
i
a
p
e
d
o
r
t
c
e
l
e
e
h
T
d
e
d
n
e
m
m
o
c
e
r
s
i
t
n
e
m
e
c
a
l
p
e
r
n
o
i
t
a
r
b
i
l
a
C
d
e
l
i
a
F
%
0
%
0
7
o
t
0
4
e
h
t
d
n
a
d
e
r
o
n
g
i
e
r
a
s
t
n
e
i
c
if
f
e
o
c
n
o
i
t
a
r
b
il
a
c
w
e
n
e
h
T
d
e
s
u
e
r
a
s
t
n
e
i
c
if
f
e
o
c
n
o
i
t
a
r
b
il
a
c
d
il
a
v
n
w
o
n
k
t
s
a
l
e
h
t
f
I
.
g
n
i
r
e
f
f
u
b
t
a
e
p
e
r
d
n
a
s
e
u
l
a
v
r
e
f
f
u
b
k
c
e
h
C
s
e
d
o
r
t
c
e
l
e
e
h
t
e
c
a
l
p
e
r
,
s
t
s
i
s
r
e
p
t
l
u
a
f
Summary of Contents for AX416
Page 70: ...68 NOTES ...