5-9
Resistive Temperature Detector (RTD) Continuity Test
Should the readings from the RTD be suspect, follow the Instructions below to test the RTD
Probe.
Required
Equipment
•
Digital MultiMeter w/ alligator clip leads
Instructions
Step Procedure
1.
Begin by disconnecting power and communications from XMV.
2. Disconnect
RTD
from
XMV.
3.
Perform continuity test on wires leading to probe. Set DMM to 200
OHM or Continuity Audio.
4.
Check continuity of 1
st
wire pair (typically Red or Black) by
connecting one lead to each wire. Meter should read zero or close
to zero.
5.
If there is continuity, skip to step no. 7. If there is NO continuity,
verify wiring at RTD head is correct.
6.
If wiring at connection head is correct, the RTD is defective.
Replace probe.
7.
Check continuity of 2
nd
wire pair (typically White) by connecting
one lead to each wire. Meter should read zero or close to zero.
8.
Check continuity of each wire (1
st
pair either Red or Black as
identified in step 4) to probe or shield. If there IS continuity, the
RTD is defective, Replace probe. If there is NO continuity,
continue to next step
9.
If there is continuity, skip to step no. 11. If there is NO continuity,
RTD is defective. Replace Probe.
10.
Check continuity of each 2
nd
wire pair (White or as identified in
step 7) to probe or shield. If there IS continuity, the RTD is
defective, Replace probe. If there is NO continuity, continue to
next step
11.
Check continuity of each 1st wire pair (as identified in Step 4) to
each 2nd wire pair (as identified in step 7). Meter should read
approximately 100 to 140 Ohms, continue to Step 12. If NOT, RTD
is defective and should be replaced.
12.
If Probe is still not functioning correctly, re-check wiring using
supplied diagram. If no wiring error was found, perform RTD
Current Source Troubleshooting.
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
Page 6: ...iv B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 10: ...viii B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 19: ...1 5 Standard Enclosure Cont RC 6790 X Figure 1 2 Model XRC6790 Continued on Next Page ...
Page 41: ...1 27 Totalflow Input Output Modules Cont Figure 1 16 XRC6990 Inside View ...
Page 42: ...1 28 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 64: ...2 22 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 86: ...4 12 Replacing XRC 195 Board Cont Figure 4 5 XRC Board Connections ...
Page 88: ...4 14 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
Page 292: ...A 176 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 340: ...B 48 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 342: ...C 2 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
