SMAR IF302, Operation, Maintenance & Instruction Manual

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IF302 - Operation and Maintenance Instruction Manual
1.6
Installation in Hazardous Areas
WARNING
Explosions could result in death or serious injury, besides financial damage. Installation of this
converter 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 converters 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 can not be used.
The electronic housing and the sensor installed in hazardous areas must have a minimum of 6 fully
engaged threads. Lock the housing using the locking screw (Figure 1.1).
The cover must be tighten with at least 8 turns to avoid the penetration of humidity or corrosive
gases. The cover must be tighten until it touches the housing. Then, tighten more 1/3 turn (120

) to
guarantee the sealing. Lock the covers using the locking screw (Figure 1.1).
Consult the Appendix A for further information about certification.
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.
The standard plugs provided by Smar are certified according to CEPEL certificate. 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.
For NEMKO ATEX certificate please to follow the installation guidelines in hazardous locations
below: Group II Category 2G, Ex d, Group IIC, Temperature Class T6, EPL Gb U = 28VDC
Ambient Temperature: -20 to 60ºC for T6
Environmental Protection: IP66/687 or IP66W/687W
The electrical connection available are ½ - 14NPT and M20x1,5.
Cable entries must be connected or closed using metal cable gland and metal blanking plug,
both with at least IP66 and Ex-d certification or any appropriate ATEX approved metal cable
gland and metal blanking plug. Do not remove the transmitter 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 transmitter 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.
It is not recommended to remove the transmitter cover when the power is ON.