Emerson Process Management rosemount 3300 series manual Urxqglqj DEOH6HOHFWLRQ, +Ddugrxv$Uhdv

Rosemount 3300 Series

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00809-0100-4811, Rev AA October 2002

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The electronics housing has two entries for ½ - 14 NPT. Optional M20×1.5 and PG 13.5 adapters are also available. The connections are made in accordance with local or plant electrical codes.

Make sure that unused ports are properly sealed to prevent moisture or other contamination from entering the terminal block compartment of the electronics housing.

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Use the enclosed metal plug to seal the unused port.

The housing should always be grounded in accordance with national and local electrical codes. Failure to do so may impair the protection provided by the equipment. The most effective grounding method is direct connection to earth ground with minimal impedance. There are two grounding screw connections provided. One is inside the Field Terminal side of the housing and the other is located on top of the housing. The internal ground screw is identified by a ground symbol: ￿

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Grounding the transmitter via threaded conduit connection may not provide sufficient ground.

Use shielded twisted pair wiring for the Rosemount 3300 Series in order to comply with EMC regulations. The cables must be suitable for the supply voltage and approved for use in hazardous areas, where applicable. For instance, in the U.S., explosion-proof conduits must be used in the vicinity of the vessel. For the ATEX flame proof approval version of the 3300 Series, suitable conduits with sealing device or flame proof (EEx d) cable glands must be used depending on local requirements.

Use 18 AWG to 12 AWG in order to minimize the voltage drop to the transmitter.

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When the 3300 transmitter is installed in hazardous area, local regulations and specifications in applicable certificates must be observed.

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