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pH Operations
5.2 Set the manual temperature compensation for
glass pH electrodes
Glass pH electrodes are automatically temperature compensated if a temperature
probe is detected in the 3.5 mm phono jack. If no probe is detected, the system
defaults to manual temperature compensation at 25.0 C. Manual temperature
compensation is always in °C (No °F conversion is necessary).
Table 1 pH values of buffers at various temperatures
°
°
25
C
0
C
1.68
1.67
4.01
4.00
6.86
6.98
7.00
7.12
9.18
9.46
10.01
10.32
12.45
13.42
To set the manual temperature compensation:
1.
Push SETUP then push PH to put in the pH setup mode.
2.
Push the arrow keys until the manual temp screen is displayed.
24
Nominal Value
°
°
5
C
10
C
1.67
1.67
4.00
4.00
6.95
6.92
7.09
7.06
9.40
9.33
10.25
10.18
13.21
13.00
°
°
20
C
30
C
1.67
1.68
4.00
4.01
6.87
6.85
7.01
6.99
9.23
9.14
10.06
9.97
12.63
12.29
°
°
40
C
50
C
1.69
1.71
4.03
4.06
6.84
6.83
6.97
6.97
9.07
9.02
9.98
9.83
12.04
11.70
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