10
109118-1 Rev. A, 10/96
2
2.5
mV Measurements (cont)
Press until mV shows at the top of the display.
Put the tip of the electrode in the sample and press The
meter will display absolute millivolts.
When the reading is stable, press to freeze the display.
2.6
Temperature Measurements
To measure temperature you must be using an ATC probe or the
3-in-1 Combination electrode which includes an ATC probe. If
you do not have an ATC probe the temperature will default to
25°C.
The Model 440 shows the temperature in the lower left corner of
the display. If an ATC is in use the display will show ATC. If not
the display will show MTC and 25°C.
Buffer Temperature Correction Table
If you use standard buffers (listed below) the 440 automatically
corrects for temperature using the values shown in the table.
1.68
4.00
4.01
6.86
7.00
9.18
9.21
10.01
0°C
1.67
4.00
4.01
6.98
7.12
9.46
9.52
10.32
5°C
1.67
4.00
4.01
6.95
7.09
9.40
9.45
10.25
10°C
1.67
4.00
4.00
6.92
7.06
9.33
9.38
10.18
15°C
1.67
4.00
4.00
6.90
7.04
9.28
9.32
10.12
20°C
1.68
4.00
4.00
6.88
7.02
9.23
9.26
10.06
25°C
1.68
4.00
4.01
6.86
7.00
9.18
9.21
10.01
30°C
1.68
4.01
4.01
6.86
6.99
9.14
9.16
9.97
35°C
1.69
4.02
4.02
6.84
6.98
9.10
9.11
9.93
40°C
1.69
4.03
4.03
6.81
6.98
9.07
9.06
9.89
45°C
1.70
4.04
4.04
6.83
6.97
9.04
9.03
9.86
50°C
1.70
4.06
4.06
6.83
6.97
9.01
8.99
9.83
mode
read
read
