2mA
0.9852mA
1.0147mA
1.8kΩ
–
R
R
LM129
6.9V
Voltage
Ref
300Ω
RS
XTR101
R
R
+
0.01µF
4.7kΩ
FIGURE 14. Bridge Input, Voltage Excitation.
1mA
This circuit has down
scale burn-out indication.
2mA
R
R
R
1mA
–
300Ω
Type J
–
–
+
R
RS
20Ω
RTD
100Ω
XTR101
RS
XTR101
15Ω
Zero
Adjust
J
+
2.5kΩ
+
2.2kΩ
FIGURE 15. Bridge Input, Current Excitation.
FIGURE 16. Thermocouple Input with RTD Cold Junction
Compensation.
1mA
1mA
This circuit has down
scale burn-out indication.
1mA
2kΩ
This circuit has up
1mA
scale burn-out indication.
+
–
–
–
Type J
–
+
20Ω
51Ω
RS
RS
RTD
XTR101
XTR101
20Ω
100Ω
15Ω
Zero
Adjust
+
2.5kΩ
+
Zero
Adjust
2.5kΩ
FIGURE 17. Thermocouple Input with Diode Cold Junction
Compensation.
FIGURE 18. Thermocouple Input with RTD Cold Junction
Compensation.
®
XTR101
12
BB [ BURR-BROWN CORPORATION ]
