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TM 55-6695-220-13&P
(4) Apply the test leads of the Digital Multi-meter to the tester STANDARDIZING PIN JACKS.
(5) With the TEMPERATURE SELECTOR SWITCH set to the temperature values indicated in Table 3-6, the
Multi-meter readings shall correspond within ±0.04 millivolts between 0 and 20 millivolts, and ±0.06 millivolts
between 20 and 50 millivolts.
Table 3-6. Thermocouple Voltage Output
Temperature Switch
Test Point (°C)
Millivolts
Temperature Switch
Test Point (°C)
Millivolts
I-C
-50
-3.57
C-C
100
3.49
I-C
0
-1.05
C-C
150
5.91
I-C
+20
0.00
C-C
200
8.50
I-C
50
+1.61
C-C
250
11.22
I-C
100
4.35
C-C
300
14.07
I-C
150
7.14
C-C
350
17.03
I-C
200
9.94
C-A
0
0.00
I-C
250
12.74
C-A
200
8.13
I-C
300
15.51
C-A
400
16.39
I-C
350
18.27
C-A
500
20.64*
I-C
-50
-2.59
C-A
600
24.90*
C-C
0
-0.79
C-A
700
29.14*
C-C
+20
0.00
C-A
800
33.31*
C-C
50
+1.25
C-A
1,000
41.31*
-
-
-
C-A
1,200
48.89*
* Indicates Tol. = ±0.06 MV, All Others = ±0.04 MV
Connect the resistance standard to the thermometer lead clips before actuating the
LEAD RESISTANCE CONTROL to prevent unnecessary striking of the VOLTMETER
pointer against the stops.
e.
Thermocouple Lead Resistance Checkout.
(1) Rotate the RESISTANCE AND VOLTAGE FUNCTION SWITCH to the LEAD RESISTANCE position.
3-9
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