Thermocouple Output - Fluke 7526A Calibration Manual

Thermocouple Output

The thermocouple (TC) output performance test verifies the accuracy of the TC output on
the front panel of the Product. Thermocouple mV specifications will be used for this test.
When this test is combined with the cold junction compensation (CJC) test, all functions
of the TC output are checked. The cable necessary to connect the Product to the 8508A
will need to be constructed. The TC mini-connector needs copper-copper (white). With
copper wire, connect the mini-connector to standard banana jacks. See Figure 3 for
connections.
1. Push  and then  to select TC output.
2. Push  until mV/°C shows on the display.
3. Output the mV values listed in Table 6.
Nominal Voltage
-10.000 mV
15.000 mV
35.000 mv
55.000 mV
75.000 mV
8508A
Figure 3. Thermocouple Output Performance Test Connections
Table 6. TC mV Test
90-Day Specification
3.125 μV
3.375 μV
3.750 μV
4.250 μV
4.750 μV
Precision Process Calibrator
1-Year Specification
3.15 μV
3.45 μV
3.90 μV
4.50 μV
5.10 μV
7526A
7526A PRECISION PROCESS CALIBRATOR
mA
VOLTS RTD/
100 mA MAX OUTPUT
HI
HI HI
OUTPUT
100 V MAX
LO
LO
20V PK
MAX
4 W RTD/
INPUT
HI
CURRENT SENSE
LO
20V PK
MAX
Performance Tests
TC
INPUT/OUTPUT
20 V PK
MAX
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