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P1-04THM Schematic
TC1+
TC1-
TC2+
TC2-
TC3+
TC4+
TC3-
TC4-
CH1 T/C
INPUT
INTERNAL
MODULE CIRCUITRY
CH2 T/C
INPUT
CH3 T/C
INPUT
CH4 T/C
INPUT
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P1-04THM Wiring Diagram
AC or DC
AC or DC
Thermocouple Input Circuits
Voltage Input Circuits
Excitation
Power Supply
Transmitter
Power Supply
Ungrounded/Shielded
Thermocouple
TC+
TC-
TC+
TC-
TC+
TC-
Grounded/Shielded
Thermocouple
Infrared
Thermocouple
4-wire
Voltage
Transmitter
Load Cell
or
Strain Gauge
Voltage Divider
TC+
TC-
TC+
TC-
TC+
TC-
NOTES:
1. Connect shield to thermocouple signal/ground only. Do not connect to
both ends.
2. Install jumper wire on each unused input,
TC+ to TC-.
3. With grounded thermocouples, take precautions to prevent having a
voltage potential between thermocouple tips. A voltage of 1.25V or
greater between tips will skew measurements.
4. Use shielded, twisted thermocouple extension wire that matches the
thermocouple type. Use thermocouple-compatible junction blocks.
TC+
TC-
