Veris-technologies OpticMapper - Operating Instructions Manuel d'utilisateur télécharger pdf (Page 42)

Pub.# OM17-OpticMapper

6-8

Figure 3.7

C. Testing Coulter-Electrode isolation

If continuity tests show no excessive resistance on any channel, yet erratic soil EC readings

continue, or if EC readings do not drop to –1 when unit is out of the soil, it is possible that the

channels are not isolated. This could be the result of a pinched wiring cable, causing channels to

short out. Or, one of the coulter-electrodes is no longer insulated properly from the frame or

adjacent coulter-electrodes.

1. If EC readings do not drop to –1 when unit is raised, disconnect signal cable extension from

implement. If readings don’t drop to –1, the problem is with the signal cable extension. If

readings show -1, re-insert the signal cable extension into the implement. Disconnect the

sure-seal terminal connector wire from each coulter electrode. If readings don’t drop to –1,

the problem is with the wiring harness. If this is the case, you should replace the wiring

harness. If readings do drop, re-insert the signal cable extension into the implement. The

problem is with one or more of the coulter-electrodes. Proceed as follows:

sure-seal pin

sure seal socket

Figure 3.8

hubcap

commutator

coulter spindle

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Veris-technologies OpticMapper - Operating Instructions Manuel d'utilisateur Page 42