National Instruments SCC-TC02 用户手册
SCC-TC Series Thermocouple Input Modules User Guide
12
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Cold-Junction Sensor
Cold-junction sensor accuracy
................±0.4 °C max from 15 to 35 °C,
±0.75 °C max from 0 to 15 °C
and 35 to 55
and 35 to 55
°C
Output .....................................................1.91 V (0
°C) to 0.58 V (55 °C)
Note
The accuracy specification includes the combined effects of the temperature sensor
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.
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
Pull-up resistor........................................10 M
Ω
Bias resistor ............................................10 M
Ω
Maximum field wire gauge.....................16 AWG
Power Requirement
Analog power .........................................60 mW max
+15 V...............................................2 mA max
–15 V ...............................................2 mA max
–15 V ...............................................2 mA max
Digital power (
+5 V) ..............................0.0 mW
Physical
Figure 2. SCC-TC01 Dimensions
1.87 cm
(0.74 in.)
7.60 cm
(2.99 in.)
3.55 cm
(1.4 in.)