TB 9-6695-281-35
Table 6. Thermocouple Thermometer
Test istrument
indications
TEMPERATURE
standard settings
selector switch positions
(oms)
(outer scale)
Min
Max
IRON CONSTANTAN
oC
17.00
-1.01
-1.09
0
17.00
+20
-0.04
+0.04
17.00
+50
+1.57
+1.65
17.00
+100
+4.31
+4.39
17.00
+150
+7.10
+7.18
17.00
+200
+9.90
+9.98
17.00
+250
+12.70
+12.78
17.00
+300
+15.47
+15.55
17.00
+350
+18.23
+18.31
COPPER CONSTANTAN oC
17.00
-2.55
-2.63
-50
17.00
0
-0.75
-0.83
17.00
+20
-0.04
+0.04
17.00
+50
+1.21
+1.29
17.00
+100
+3.45
+3.53
17.00
+150
+5.87
+5.95
17.00
+200
+8.46
+8.54
17.00
+250
+11.18
+11.26
17.00
+300
+14.03
+14.11
17.00
+350
+16.99
+17.07
CHROMEL ALUMEL C
42.00
-0.04
+0.04
0
42.00
+200
+8.09
+8.17
42.00
+400
+16.35
+16.43
42.00
+500
+20.58
+20.70
42.00
+600
+24.84
+24.96
42.00
+700
+29.08
+29.20
42.00
+800
+33.25
+33.37
42.00
+1000
+41.25
+41.37
42.00
+1200
+48.83
+48.95
b. Adjustments
(1) Adjust magnetic shunt or R10 (see 9b above) to bring digital voltmeter
indication within the limits specified.
(2) Repeat 9a above.
NOTE
The thermocouple thermometer check and the voltage check
interact.
8