Revision 3
STT850
Temperature Transmitter User’s Manual
Page 15
Figure 9
– DE Dual Input Wiring Diagram
o
Resistance temperature detector (RTD) measurements use the 3 or 4 wire approach.
o
Dual-input units wired for a 4-wire RTD will automatically disable Input 2.
o
To minimize common noise problems in the application, a strap/jumper should be
wired between terminals 6 and 8.
For differential T/C operation on DE Models, a second strap/jumper should be wired between
terminals 6 and 7. Do not install this strap for Non-DE models. The output for differential operation is
calculated as T/C 1 - T/C 2.
o
Figure 9
– DE Dual Input Wiring Diagram
Thermocouple and RTD Connections (not applicable to single input sensor)
Figure 10
- HART/FF Dual Input Wiring Diagram
o
For External C/J compensation, the first input is a thermocouple type and the second
input is a 3-wire PT100 ohm RTD
o
The STT850 can have different sensor types on its inputs for split range or averaging
applications
Summary of Contents for STT850 SMARTLINE
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