Safety Instructions: Ex Ia, Ex Tc, Ex Na - Endress+Hauser iTEMP TMT82 Safety Instructions

XA01006T
Safety
instructions: Ex
ia, Ex tc, Ex nA
14
• When installing, make sure that the housing and cable glands used
meet the requirements according to IEC/EN 60079-0 for Group III
enclosures.
• For ambient temperatures higher than +70 °C, use suitable heat-
resisting cables or wires, cable entries and sealing facilities for Ta
+5 K above surrounding.
• Clean the housing regularly to avoid a layer of dust accumulating on
the housing.
• The transmitter must be installed and maintained so, that even in the
event of rare incidents, an ignition source due to impact or friction
between the enclosure and iron/steel is excluded.
WARNING
L
Explosive atmosphere
‣
In an explosive atmosphere, do not open the device when voltage is
supplied (ensure that the IP 66/67 housing protection is maintained
during operation).
Dust ignition protection by intrinsic safety "i"
• In the case of Ex ia explosion protection, the power must be supplied
with an associated electrical apparatus.
• A housing that maintains a degree of protection of at least IP 6X as
per IEC/EN 60529 must be used.
Dust ignition protection by enclosure "t"
• In the event of conductive dust, a housing that maintains a degree of
protection of at least IP 6X as per IEC/EN 60529 must be used.
• In the event of non-conductive dust, a housing that maintains a
degree of protection of at least IP 54 as per IEC/EN 60529 must be
used.
Protection by type of protection "n"
WARNING
L
Explosive atmosphere
‣
In an explosive atmosphere, do not open the device when voltage is
supplied (ensure that at least the IP 54 housing protection is
maintained during operation).
When installing the unit in an approved housing for category 3, note
that the housing ingress protection classification IP 54 to IEC/EN
60529 is upheld.
iTEMP TMT82, TMT84, TMT85
Endress+Hauser