Open Thermocouple Detection; Power Requirement - National Instruments SCC-TC Series User Manual

The accuracy specification includes the combined effects of the temperature sensor
Note
accuracy and the temperature difference between the temperature sensor and any
thermocouple connector. The temperature sensor accuracy includes component tolerances,
temperature drifts, and self-heating effects. It does not include measurement device errors.

Open Thermocouple Detection

Power Requirement

Physical
Maximum Working Voltage
© National Instruments Corporation
Pull-up resistor ....................................... 10 MΩ
Bias resistor............................................ 10 MΩ
Maximum field wire gauge .................... 16 AWG
Analog power ......................................... 60 mW max
+15 V .............................................. 2 mA max
–15 V............................................... 2 mA max
Digital power (+5 V).............................. 0.0 mW
TC01 dimensions ................................... 7.8 cm × 2.92 cm × 1.85 cm
TC02 dimensions ................................... 8.89 cm × 2.92 cm × 1.85 cm
I/O .......................................................... One 20-pin right angle male
Screw terminal field-wiring
gauge (SCC-TC02) ................................ 28 to 16 AWG
Maximum working voltage refers to the signal voltage plus the
common-mode voltage.
Each input must remain within ±12 V of chassis ground.
Installation Category I
(3.1 in. × 1.15 in. × 0.73 in.)
(3.50 in. × 1.15 in. × 0.73 in.)
connector, 3-pin screw terminal
system (SCC-TC02);
two-prong mini-connector
(SCC-TC01)
13 SCC-TC Series Thermocouple Input Modules User Guide