Wika D-11-7 Manual do Utilizador descarregar pdf (Página 13)

13WIKA operating instructions pressure transmitter model D-1x-7

2478159.05 12/2011 GB/D/F/E

Types of sealing

Correct sealing of the process connections with parallel threads at the sealing face



must be made using

suitable at gaskets, sealing rings or WIKA prole sealings.

The sealing of tapered threads (e.g. NPT threads) is made by providing the thread with additional

sealing material such as, for example, PTFE tape (EN 837-2).

For further information on seals see WIKA data sheet AC 09.08 or under www.wika.com.

6.2 Making the electrical connection

■

The pressure transmitter must be earthed via the process connection.

■

Use the instrument with shielded cable.

■

Earth the shield on at least one end of the lead.

■

Only ever use a power source that ensures a safe electrical isolation of the operating voltage in

accordance with IEC/DIN EN 60204-1. In addition, observe the general requirements for PELV

circuits in accordance with IEC/DIN EN 60204-1.

6. Commissioning, operation

Parallel threads Tapered threads

per EN 837

per DIN 3852-E NPT, R and PT

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Wika D-11-7 Manual do Utilizador Página 13