SMAR DT302, Owner'S Operation And Maintenance Manual

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The instrument modification or replaced parts supplied by any other supplier than authorized
representative of Smar Equipamentos Industriais Ltda is prohibited and will void the Certification.
Marking Label
Once a device labeled with multiple approval types is installed, do not reinstall it using any other
approval types. Scratch off or mark unused approval types on the approval label.
For Ex-i protection application
- Connect the instrument to a proper intrinsically safe barrier.
- Check the intrinsically safe parameters involving the barrier, equipment including the cable and
connections.
- Associated apparatus ground bus shall be insulated from panels and mounting enclosures.
- When using shielded cable, isolate the not grounded cable end.
- Cable capacitance and inductance plus C
i
and L
i
must be smaller than C
o
and L
o
of the Associated
Apparatus.
For Ex-d protection application
- Only use Explosion Proof/Flameproof certified Plugs, Adapters and Cable glands.
- In an Explosion-Proof/Flame-Proof installation, do not remove the instrument housing covers when
powered on.
- Electrical Connection
In Explosion-Proof installations the cable entries must be connected through conduit with sealed
unit or closed using metal cable gland or closed using metal blanking plug, all with at least IP66
and Ex-d certification. For enclosure with saline environment protection (W) and ingress protection
(IP) applications, all NPT thread parts must apply a proper water-proof sealant (a non-hardening
silicone group sealant is recommended).
For Ex-d and Ex-i protection application
- The transmitter has a double protection. In this case the transmitter shall be fitted with appropriate
certified cable entries Ex-d and the electric circuit supplied by a certified diode safety barrier as
specified for the protection Ex-ia.
Environmental Protection
- Enclosure Types (Type X): Supplementary letter X meaning special condition defined as default by
Smar the following: Saline Environment approved - salt spray exposed for 200 hours at 35ºC. (Ref:
NEMA 250).
- Ingress protection (IP W): Supplementary letter W meaning special condition defined as default by
Smar the following: Saline Environment approved - salt spray exposed for 200 hours at 35ºC. (Ref:
IEC60529).
- Ingress protection (IP x8): Second numeral meaning continuous immersion in water under special
condition defined as default by Smar the following: 1 Bar pressure during 24hours. (Ref: IEC60529).
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North American Certifications
FM Approvals (Factory Mutual)
Intrinsic Safety (FM 3015610)
IS Class I, Division 1, Groups A, B, C and D
IS Class II, Division 1, Groups E, F and G
IS Class III, Division 1
Explosion Proof (FM 3015610)
XP Class I, Division 1, Groups A, B, C and D
Dust Ignition Proof (FM 3015610)
DIP Class II, Division 1, Groups E, F and G
DIP Class III, Division 1
Non Incendive (FM 3015610)
NI Class I, Division 2, Groups A, B, C and D
Environmental Protection (FM 3015610)
Option: Type 4X/6 or Type 4/6