Emerson ROC827 Manual do Utilizador descarregar pdf (Página 124)

ROC827 Instruction Manual

Issued Mar-06 Troubleshooting 6-12

4. Verify the thermocouples have the correct construction (ungrounded)

and are not grounded by other means.

5. Verify you are using the correct thermocouple wire all the way from

the thermocouple to the ROC827 with minimal connections.

6. Verify the wiring run is adequately protected from noise.

7. Test the thermocouple reading from the thermocouple to a meter, and

then generate a signal into the ROC827 as described previously.

8. Finally, connect a thermocouple of the same type directly to the

ROC827. If it reads correctly, the problem is likely to be in the wiring

to the field or may be related to a ground loop.

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Emerson ROC827 Manual do Utilizador Página 124