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Reference Manual
00809-0100-4697, Rev EA
October 2011
Rosemount 848T
B-2
IE FISCO (Fieldbus Intrinsically Safe Concept) Intrinsic Safety
Intrinsically safe for use in Class I, Division 1, Groups A, B, C, D; when
installed in accordance with Rosemount Drawing 00848-4404.
Temperature Code:
T4 (T
amb
= –40 to 60 °C)
Non-incendive for use in Class I, Division 2, Groups A, B, C, D (suitable
for use with non-incendive field wiring); when installed in accordance
with Rosemount Drawing 00848-4404.
Temperature Code:
T4A (T
amb
= –40 to 85 °C)
T5 (T
amb
= –40 to 70 °C)
N5 Dust Ignition-Proof
For use in Class II, III, Division 1, Groups E, F, G. Class I, Division 2,
Groups A, B, C, D;
Non-incendive for Class 1, Division 2, Groups A, B, C, D when installed
to Rosemount Control Drawing 00848-4404.
Rosemount Enclosure Required.
Valid with both S001 and S002 options.
Temperature Code:
T4A (T
amb
= –40 to 85 °C)
T5 (T
amb
= –40 to 70 °C)
NK Non-Incendive for use in Class I, Division 2, Groups A, B, C, D (suitable
for use with Non-Incendive field wiring) when installed in accordance with
Rosemount Drawing 00848-4404.
Temperature Code:
T4A (T
amb
= -40 to 85 °C)
T5 (T
amb
= -40 to 70 °C)
Rosemount Enclosure Required.
Indoor Hazardous (Classified) Locations.
Table B-3. Entity Parameters
Power/Bus Sensor
(1)
(1) Entity parameters apply to entire device, not individual sensor channels.
V
max
= 17.5 V V
OC
= 12.5 V
I
max
= 380 mA I
SC
= 4.8 mA
P
i
= 5.32 W P
o
= 15 mW
C
i
= 2.1nF C
A
= 1.2 F
L
i
= 0 L
A
= 1 H
Table B-4. FM Approved Entity Parameters
(1)
(1) Intrinsically safe and non-incendive parameters.
Power/Bus Sensor
V
max
= 42.4 V V
OC
= 12.5 V
C
i
= 2.1 F I
SC
= 4.8 mA
L
i
= 0 H P
o
= 15 mW
C
A
= 1.2 F
L
A
= 1 H