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 (Tamb = –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 (Tamb = –40 to 85 °C)
T5 (Tamb = –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 (Tamb = –40 to 85 °C)
T5 (Tamb = –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 (Tamb = -40 to 85 °C)
T5 (Tamb = -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.
Vmax = 17.5 V VOC = 12.5 V
Imax = 380 mA ISC = 4.8 mA
Pi = 5.32 W Po = 15 mW
Ci = 2.1nF CA = 1.2 F
Li = 0 LA = 1 H
Table B-4. FM Approved Entity Parameters(1)
(1) Intrinsically safe and non-incendive parameters.
Power/Bus Sensor
Vmax = 42.4 V VOC = 12.5 V
Ci = 2.1 F ISC = 4.8 mA
Li = 0 H Po = 15 mW
CA = 1.2 F
LA = 1 H