Specifications

Reference Temperature Sensing with the VT1419A
The Terminal Modules provide an on-board thermistor for sensing isothermal
reference temperature of the terminal blocks. Also provided is a jumper set (JM1 in
Figures 2-5 and 2-4) to route the VT1419A’s on-board current source to a
thermistor or RTD on a remote isothermal reference block. Figures 2-6 and 2-7
show connections for both local and remote sensing.
Field Wiring
Reference Temperature Sensing with the VT1419A
Chapter 2 33
Terminal Module
Field Wiring
On-Board
Current Source
LI
HI
J1
REM
ON
BOARD
HTI
HTS
LTS
Hnn
Lnn
LTI
Any Sense
Channel
Figure 2-6: Remote Thermistor or RTD Connections
Terminal Module
On-Board
Current Source
HI
LI
Field Wiring
REM
Any Sense
Channel
ON
BOARD
HTI
LTI
HTS
LTS
Hnn
Lnn
J1
Figure 2-7: On-Board Thermistor Connections
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