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Page Title:
Table 3. Ambient Temperatures Versus Millivolt Values |
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  TB 9-4920-364-35
Degrees fahrenheit
Degrees centigrade
Millivolt values1
70
21.1
0.843
71
21.7
0.865
72
22.2
0.888
73
22.8
0.910
74
23.3
0.933
75
23.9
0.955
76
24.4
0.978
77
25.0
1.000
78
25.6
1.023
79
26.1
1.045
80
26.7
1.068
81
27.2
1.090
82
27.8
1.113
83
28.3
1.135
84
28.9
1.158
85
29.5
1.181
From NBS standard monograph 125.
1
(7) Set SW-6 switch to RANGE.
(8) Adjust °C control for 0 indication on GALVO-1. If TI °C dial does not indicate
0° ±1°, perform b (1) through (13) below.
(9) Set SW-6 switch to MECH. ZERO.
(10) Set calibrator to standby and reverse connections at calibrator input.
(11) Adjust calibrator output to 48.462 mV less value recorded in (6) above.
(12) Adjust °C control until dial indicates 1190.
(13) Set SW-6 switch to RANGE.
(14) Adjust °C control until GALVO-1 indicates 0.
If °C dial does not indicate
between 1189 and 1191, perform b 1) through (13) below.
(15) Set SW-6 switch to MECH. ZERO.
(16) Repeat technique of (11) through (14) above, using values listed in table 4. TI °C
dial will indicate within limits specified.
Calibrator
Test instrument °C dial indication
output (mV)1
Min
Initial
Max
45.108
1099
1100
1101
41.269
999
1000
1001
37.325
899
900
901
33.277
799
800
801
31.214
749
750
751
29.128
699
700
701
27.022
649
650
651
See footnote at end of table.
6
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