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pH CALIBRATION WITH FIXED TEMPERATURE
COMPENSATION (HI8614 family)
• Take the temperature of the buffer solu‑
tions using a Checktemp or a thermometer
with a resolution of at least 1 °C.
• Connect the appropriate resistor to the
"TEMP. PROBE" terminals (see page
8) depending on the temperature of the
calibration solution.
• Follow the procedure as outlined in the calibration with automatic
temperature compensation and use the thermometer reading to
adjust the trimmer until the ammeter reads the value according to
the following table.
HI8614, HI8614L
Temperature
ºC
ºF
0
32
5
41
10
50
15
59
20
68
25
77
30
86
35
95
40
104
45
113
50
122
55
131
60
140
pH4.01 Buffer
pH
mA
4.01
9.34
4.00
9.33
4.00
9.33
4.00
9.33
4.00
9.33
4.01
9.34
4.02
9.35
4.03
9.36
4.04
9.37
4.05
9.38
4.06
9.39
4.07
9.40
4.09
9.41
12
pH7.01 Buffer
pH
mA
7.13
12.12
7.10
12.09
7.07
12.06
7.04
12.04
7.03
12.03
7.01
12.01
7.00
12.00
6.99
11.99
6.98
11.98
6.98
11.98
6.98
11.98
6.98
11.98
6.98
11.98
pH10.01 Buffer
pH
mA
10.32
14.95
10.24
14.88
10.18
14.83
10.12
14.77
10.06
14.72
10.01
14.68
9.96
14.63
9.92
14.60
9.88
14.56
9.85
14.53
9.82
14.51
9.79
14.48
9.77
14.46
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