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When is opto-isolation necessary?
Another common issue where 4-20 ma loops is concerned is the type of transmitter in use. If the loop is powered by the control system no isolation is required. If the transmitter is 4-wire (field powered) then isolation is required to prevent tying the field power to the control system...- jimgraves
- Post #6
- Forum: Measurement & control instrumentation engineering
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Anyone have any RECENT experience w
Like everything else proper installation is critical. With that said; yes, Foundation fieldbus lives up to the promises.- jimgraves
- Post #3
- Forum: Measurement & control instrumentation engineering
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SYBASE/ENVOX - PROVOX DCS
I do not understand "no access to the ENVOX administrator (envoxa) forms system". Is this a VMS system? If so "envoxa" issued at a VMS $ prompt should envoke the administration forms. Try selecting "administration" under the "More" menu on the upper...
