Use In Areas Requiring Ignition Protection; Approvals; Ground; Interconnection - ABB TTF350 Instrucciones Para La Puesta En Funcionamiento

2

Use in areas requiring ignition protection

Special regulations must be observed in explosion-protection zones for the auxiliary power
connection, signal inputs/outputs and ground connection. Information on ignition protection in
the separate chapters must be observed.
Caution! Potential damage to parts!
All parts must be installed in accordance with manufacturer information and relevant
standards and regulations.
Startup and operation must be performed in accordance with ATEX 137 or BetrSichV
(EN60079-14).
2.1

Approvals

The approvals for use of the TTF350 temperature transmitter in explosion-protection areas can
be found in the section "Approvals".
2.2

Ground

If for functional reasons, the intrinsically safe circuit has to be grounded by connection to the
equipotential bonding system, it may only be grounded at a single location.
2.3

Interconnection

If transmitters are operated in an intrinsically safe circuit, proof that the interconnection is
intrinsically safe must by provided in accordance with DIN VDE 0165/08.98 (EN 60 079-14/1997
and IEC 60 079-14/1996). In general, intrinsically safe circuits require proof of interconnection.
2.4

Configuration

TTF350 temperature transmitters can be installed in the explosion-protection area in
compliance with the proof of interconnection and directly in the explosion-protection area using
approved handheld HART terminals (e.g., HC275) as well as by coupling an ignition-proof
modem to the circuit outside the explosion-protection area.
2.5

Explosion-protection relevant information

For additional information, refer to the section "Explosion-protection relevant information".
CI/TTF350-X1
Use in areas requiring ignition protection
TTF350 EN - 7