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Reference Manual
00809-0100-4697, Rev EA
October 2011
B-9
Rosemount 848T
China (NEPSI)Certifications
I3 Intrinsic Safety
Ex ia IIC T4
Certification Number: GYJ111365X
Special Conditions for Safe Use (x):
2.1. Only when temperature transmitter is installed in IP
20(GB4208-2008) housing, it could be used in hazardous location.
The metallic housing should observe the requirements of
GB3836.1-2000 Clause 8. The non-metallic housing should observe
the requirements of GB3836.1-2000 Clause 7.3. This apparatus is
not capable of withstanding the 500V rms insulation test required by
Clause 6.4.12 of GB3836.4-2000.
2.2. The ambient temperature range is:
2.3. Parameters:
Terminals of power/loop (1-2):
NOTE
Non-FISCO parameters listed above must be derived from a linear supply
with a resistance limited output.
Terminals of sensor:
2.4. The product complies to the requirements for FISCO field devices
specified in IEC60079-27: 2008. For the connection of an intrinsically
safe circuit in accordance FISCO model, FISCO parameters of this
product are as above.
2.5. The product should be used with Ex-certified associated apparatus to
establish explosion protection system that can be used in explosive
gas atmospheres. Wiring and terminals should comply with the
instruction manual of the product and associated apparatus.
2.6. The cables between this product and associated apparatus should be
shielded cables (the cables must have insulated shield). The shielded
cable has to be grounded reliably in non-hazardous area.
Output T code Ambient temperature
F T4 -50 °C < Ta < + 60 °C
Output
Maximum
Output Voltage:
U
o
(V)
Maximum
Output Current:
I
o
(mA)
Maximum
Output Power:
P
o
(mW)
Maximum external
parameters:
C
o
(F) Lo (H)
F 30 300 1.3 2.1 0
F (FISCO) 17.5 380 5.32 2.1 0
Output Terminals
Maximum
Output Voltage:
U
o
(V)
Maximum
Output Current:
I
o
(mA)
Maximum
Output Power:
P
o
(mW)
Maximum external
parameters:
C
o
(F) Lo (H)
F 1-8 12.5 4.8 15 1.2 1