Fluke 7526A - Thermocouple Tests (Output, Input, CJC)

Precision Process Calibrator
Performance Tests
15
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.
Table 6. TC mV Test
Nominal Voltage 90-Day Specification 1-Year Specification
-10.000 mV 3.125 μV 3.15 μV
15.000 mV 3.375 μV 3.45 μV
35.000 mv 3.750 μV 3.90 μV
55.000 mV 4.250 μV 4.50 μV
75.000 mV 4.750 μV 5.10 μV
CURRENT
OUTPUT
HI
VOLTS
mA
RTD/
OUTPUT
HI
LO
HI
LO
LO
TC
SENSE
INPUT/OUTPUT
4 W RTD/
INPUT
20V PK
MAX
100V MAX
100 mA MAX
20V PK
MAX
20V PK
MAX
PRECISION PROCESS CALIBRATOR
7526A
HI
8508A
7526A
gxm011.eps
Figure 3. Thermocouple Output Performance Test Connections