©
National Instruments Corporation
13
BNC/TC-2095 Rack-Mount Adapter Installation Guide
Temperature Sensor Circuit Diagram
The circuit diagram in Figure 4 is optional information that you can use if
you want more details about the TC-2095 temperature sensor.
Figure 4.
Temperature Sensor Circuit Diagram
Configuring the Resistor Networks
When using an SCXI-1102/B/C, you can use the package of 10 M
Ω
resistor
networks included in the BNC/TC-2095 kit. You can install these resistor
networks as RP1, RP2, RP3, and RP4. Refer to Figure 3 for the locations
of RP<1...8>. If you use this configuration and you have the
ground-referencing switch powered on, the thermocouples or signals with
low-impedance sources (less than 100
Ω
) either float without affecting the
measurement or are ground-referenced.
Figure 5 shows how the pull-up and ground-referencing resistors are
connected to the CH± inputs of the SCXI module.
4.7 k
Ω
1%
5 k
Ω
0.1%
1
2
1
2
2
+
5 k
Ω
at 25
°
C
10 µF
16 V
0.1 µF
0.1 µF
–t
°
+5 V
2.5 V
LM 4040
2.5 V
0.1%
MTEMP
DTEMP
W1
