SMAR HART FY500, Установка, эксплуатация и обслуживание

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Section 1 - Installation
1.23
Installation in Hazardous Areas
WARNING
Explosions could result in death or serious injury, besides financial damage. Installation of this positioner in
explosive areas
must be carried out in accordance with the local standards and the protection type adopted.
Before continuing the installation make sure the certificate parameters are in accordance with the classified
area where the equipment will be installed.
The instrument modification or parts replacement supplied by other than authorized representative of Smar is
prohibited and will void the certification.
The positioners are marked with options of the protection type. The certification is valid only when the
protection type is indicated by the user. Once a particular type of protection is selected, any other type of
protection cannot be used.
The electronic housing and the position sensor installed in hazardous areas must have a minimum of 6 fully
engaged threads. Lock the housing using the locking screw (Figure 1.10).
The cover must be tightened with at least 8 turns to avoid the penetration of humidity or corrosive gases. The
cover must be tightened until it touches the housing. Then, tighten more 1/3 turn (120

) to guarantee the
sealing. Lock the covers using the locking screw (Figure 1.10).
Explosion/Flame Proof
WARNING
In Explosion-Proof installations, the cable entries must be connected or closed using metal cable gland and
metal blanking plug, both with at least IP66 and Ex-d certification.
As the positioner is non-
ignition capable under normal conditions, the statement “Seal not Required” could
be applied for Explosion Proof Version.
The standard plugs provided by Smar are certified according to international standards. If the plug needs to
be replaced, a certified plug must be used.
The electrical connection with NPT thread must use waterproofing sealant. A non-hardening silicone sealant
is recommended.
Do not remove the positioner covers when power is ON.
Intrinsically Safe
WARNING
In hazardous zones with intrinsically safe or non-incendive requirements, the circuit entity parameters and
applicable installation procedures must be observed.
To protect the application the positioner must be connected to a barrier. Match the parameters between
barrier and the equipment (Consider the cable parameters). Associated apparatus ground bus shall be
insulated from panels and mounting enclosures. Shield is optional. If used, be sure to insulate the end not
grounded. Cable capacitance and inductance plus Ci and Li must be smaller than Co and Lo of the
associated Apparatus.
For free access to the HART bus in explosive environment, ensure the instruments in the loop are installed in
accordance with intrinsically safe or non-incendive field wiring practices. Use only Ex HART communicator
approved according to the type of protection Ex-i (IS) or Ex-n (NI).
It is not recommended to remove the positioner cover when the power is on.
NOTE
To obtain all the available certifications consult www.smar.com .