Instruction Manual

Instruction Manual
D101402X012
3660 and 3661 Positioners
January 2013
7
Type n
The 3661 has an IP44 ingress protection: it is only intended to be installed in an area where a convenient protection is
ensured against the entry of solid foreign bodies and liquids which may decrease the safety.
Refer to table 5 for additional approval information and figure 30 for a typical ATEX/IECEx approval nameplate.
Table 5. Hazardous Area Classifications for Fisher 3661 Positioner—ATEX
Certificate Certification Obtained Entity Rating Temperature Code Enclosure Rating
ATEX
II 1 G
Intrinsically Safe
Gas
Ex ia IIC T4/T5/T6
Ui = 30 VDC
Ii = 150 mA
Pi = 1.25 W
Ci = 0 nF
Li = 0 mH
T4 (Tamb ≤ 82°C)
T5 (Tamb ≤ 62°C)
T6 (Tamb ≤ 47°C)
IP44
II 3 G
Type n
Gas
Ex nA IIC T6
- - - T6 (Tamb ≤ 82°C) IP44
IECEx
Conditions of Certification
Intrinsically Safe
WARNING
Substitution of components may impair intrinsic safety.
-40_C Ta +82_C; T6 (Ta +47_C); T5 (Ta +62_C)
Entity Parameters
Ui
=
30 V, li = 150 mA, Pi = 1.25 W, Ci = 0 nF, Li = 0 mH
Type n
WARNING
Disconnect power before opening.
-40_C Ta +82_C; T6 (Ta +82_C)
Refer to table 6 for additional approval information, and figure 30 for a typical ATEX/IECEx approval nameplate.
Table 6. Hazardous Area Classifications for Fisher 3661 Positioner—IECEx
Certificate Certification Obtained Entity Rating Temperature Code Enclosure Rating
IECEx
Intrinsically Safe
Gas
Ex ia IIC T4/T5/T6
Ui = 30 VDC
Ii = 150 mA
Pi = 1.25 W
Ci = 0 nF
Li = 0 mH
T4 (Tamb ≤ 82°C)
T5 (Tamb ≤ 62°C)
T6 (Tamb ≤ 47°C)
IP44
Type n
Gas
Ex nA IIC T6
- - - T6 (Tamb ≤ 82°C) IP44