ATI
Q46P pH System
Part 6 – Calibration
44
O&M Manual
Rev-F (8/17)
Auto Buffer
This is a multiple variable function that allows the user to choose which
pH buffer sets that will be utilized in the 2-point calibration mode. The
Q46P contains 3 sets of built-in buffer tables with compensation values
ranging from 0 to 95°C. During 2-point calibration, the instrument will
automatically identify which buffer is being used and compensate for the
value based on the built-in tables. This allows very quick, highly
accurate calibrations by the user. The order in which the buffers are
used during calibration is unimportant, since the system automatically
chooses the correct buffer.
The default setting for this feature is
OFF
, which disables the auto-
recognition function. Press ENTER to change this setting. The buffer
table set options are: 1: [4/7/10], 2: [4/7/9.18], and 3: [4.65/6.79/9.23].
See Figure 32 for buffer tables. Once the buffer set is selected, press
ENTER and the message
Accepted!
will be displayed on the lower line.
Table 1
Table 2
Figure 31 - Automatic pH Buffer Tables
4.00 pH
7.00 pH
10.00 pH
ºC
pH
°C
pH
°C
pH
0
4.00
0
7.10
0
10.27
10
3.99
10
7.06
10
10.15
20
4.00
20
7.02
20
10.05
30
4.01
30
6.99
30
9.95
40
4.03
40
6.97
40
9.87
50
4.05
50
6.98
50
9.80
60
4.08
60
6.98
60
9.75
70
4.12
70
6.97
70
9.73
80
4.16
80
6.99
80
9.73
90
4.21
90
7.01
90
9.75
95
4.24
95
7.01
95
9.77
4.00 pH
7.00 pH
9.18 pH
ºC
pH
°C
pH
°C
pH
0
4.00
0
7.10
0
9.46
10
3.99
10
7.06
10
9.33
20
4.00
20
7.02
20
9.23
30
4.01
30
6.99
30
9.14
40
4.03
40
6.97
40
9.07
50
4.05
50
6.98
50
9.01
60
4.08
60
6.98
60
8.96
70
4.12
70
6.97
70
8.92
80
4.16
80
6.99
80
8.89
90
4.21
90
7.01
90
8.85
95
4.24
95
7.01
95
8.83
