ABB TTF200 Operating Instructions Manual page 11

TTF200 FIELD-MOUNT TEMPERATURE TRANSMITTER | OI/TTF200-EN REV. B
Flameproof (enclosure) - Zone 1
Housing design: ATEX II 2G Ex db IIC T6/T4 Gb
Ex area Zone 1
E
J
A
B
A Sensor
B Transmitter in Ex d-housing
C Supply isolator with voltage limit
(30 V)
Figure 7: Hookup in Zone 1 'flameproof (enclosure)' type of protection
The power supply circuit of the transmitter must be limited by
an upstream fuse with a fuse current rating of 32 mA.
Maximum input terminal voltage of the transmitter: 30 V DC
The 'flameproof enclosure' type of protection is only achieved by
correctly installing a specially certified cable gland with the Ex d
type of protection with the corresponding marking.
The sensor instrumentation must be provided by the user in
accordance with the valid Ex-standards.
As far as the installation and mounting of components is
concerned (explosion-proof cable entries, connection parts),
only those components are approved which at the least
technically comply with the current version of the
PTB 99 ATEX 1144 X type examination certificate and for which a
separate examination certificate exists. At the same time, it is
imperative that the operating conditions listed in the respective
component certificates are complied with.
Safe area
D
C
A10130
D Fuse, 32 mA
E Interface for LCD indicator
The transmitter must be connected using suitable cable and
cable entries or pipeline systems that satisfy the requirements
of EN 60079-1 and for which a separate examination certificate
exists. If the transmitter is connected to pipeline systems, the
relevant sealing device must be affixed directly to the housing.
Cable entries (PG glands) and sealing plugs of simple design
must not be used.
Close unused cable entry in accordance with EN 60079.-1.
The connection lead must be routed securely and in such a way
as to ensure adequate protection against damage.
If the temperature on the entry parts is over 70° C, connection
leads with sufficient temperature resistance must be used.
The transmitter must be integrated into the local potential
equalization of the potentially explosive area.
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