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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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CSA (Canadian Standards Association)
Class 2258 02 – Process Control Equipment – For Hazardous Locations (CSA1078546)
Class I, Division 1, Groups B, C and D
Class II, Division 1, Groups E, F and G
Class III, Division 1
Class I, Division 2, Groups A, B, C and D
Class 2258 04 – Process Control Equipment – Intrinsically Safe Entity – For Hazardous Locations (CSA 1078546)
Class I, Division 1, Groups A, B, C and D
Class II, Division 1, Groups E, F and G
Class III, Division 1
Model FY301 Valve Positioners; input supply 12-42 V dc, 4-20mA; Enclosure Type 4/4X; intrinsically safe with entity parameters:
Vmax = 28 V, Imax = 110 mA, Ci = 5 nF, Li = 12uH,
when connected through CSA Certified Safety Barriers as per Smar Installation Drawing 102A0833; T Code T3C @ Max
Ambient 40 Deg C; MWP 100 psi.
Note: Only models with stainless steel external fittings are Certified as Type 4X.
Special conditions for safe use:
Temperature Class T3C
Maximum Ambient Temperature: 40ºC (-20 to 40 ºC)
Maximum Working Pressure: 100 psi
FM Approvals (Factory Mutual)
Intrinsic Safety (FM 3009955)
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 3007267)
XP Class I, Division 1, Groups A, B, C and D
Dust Ignition Proof (FM 3009955)
DIP Class II, Division 1, Groups E, F and G
DIP Class III, Division 1
Non Incendive (FM 3009955)
NI Class I, Division 2, Groups A, B, C and D
Environmental Protection (FM 3009955)
Option: Type 4X or Type 4
Special conditions for safe use:
Entity Parameters:
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