Barber-Colman 7EM - Page 8

8
RTD input
4
3
RTD
1
4
3
RTD
1
SAFETY NOTE:
1) Do not run RTD wires with power cables.
NOTES:
1) Ground shielded cable at one end only.
2) Use the correct size copper wires.
3) The resistance of the 3 wires must be the same.
4) Pay attention to line resistance: high line resistance
(higher than 20 Ω/wire) can cause measurement
errors.
Any external components (like zener diodes, etc.)
connected between the sensor and input terminals may
cause measurement errors (excessive or unbalanced line
resistance or possible leakage currents).
A.1) Measuring inputs
Any external components (like zener diodes, etc.)
connected between the sensor and input terminals may
cause measurement errors (excessive or unbalanced line
resistance or possible leakage currents).
TC input
Shield
Shield
1
3
1
3
+
-
+
-
SAFETY NOTE:
1) Do not run input wires with power cables.
NOTES:
1) For TC wiring use proper compensating cable,
preferably shielded.
2) Shielded cable should be grounded at one end only.