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
μ
V
3.15
μ
V
15.000 mV
3.375
μ
V
3.45
μ
V
35.000 mv
3.750
μ
V
3.90
μ
V
55.000 mV
4.250
μ
V
4.50
μ
V
75.000 mV
4.750
μ
V
5.10
μ
V
CURRENT
OUTPUT
HI
VOLTS
mA
RTD/
OUTPUT
HI
LO
HI
LO
LO
TC
SENSE
INPUT/OUTPUT
4W RTD/
INPUT
20 V PK
MAX
100 V MAX
100 mA MAX
20 V PK
MAX
20 V PK
MAX
PRECISION PROCESS CALIBRATOR
7526A
HI
8508A
7526A
gxm011.eps
Figure 3. Thermocouple Output Performance Test Connections
Summary of Contents for 7526A
Page 6: ...7526A Calibration Manual iv ...
