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Reference Manual
00809-0500-4410
Input parameters
(power terminals)
U
= 30V
i
I
= 200mA
i
P
= 1W
i
C
= 0μF
i
L
= 0mH
i
Special Conditions for Safe Use (X):
1. The plastic antenna may present a potential electrostatic ignition hazard and must not
be rubbed or cleaned with a dry cloth.
2. The Model 781 enclosure is made of aluminum alloy and given a protective paint finish;
however, care should be taken to protect it from impact or abrasion if located in a zone 0
environment
3. The apparatus is not capable of withstanding the 500V isolation test required by EN
60079-11. This must be taken into account when installing the apparatus.
China
I3 China Intrinsic Safety
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
1. See certificate for special conditions.
EAC – Belarus, Kazakhstan, Russia
IM EAC Intrinsic Safety
Certificate: RU C-US.Gb05.B.00643
Markings
Input parameters
(power terminals)
U
= 30B
i
I
= 200
i
P
= 1B
i
C
= 0
i
L
= 0
i
Emerson.com/Rosemount
Input parameters
(RS485)
U
= 11V
i
I
= 300 mA
i
P
= 1W
i
C
= 5.1 nF
i
L
= 0mH
i
GYJ18.1480
GB3836.1-2010, GB3836.4-2010, GB3836.20-2010
Ex ia IIC T4 Ga, -40
0Ex ia IIC T4 Ga X -40ºC ≤ Ta ≤ 70ºC
Input parameters
(RS485)
U
= 11B
i
A
I
= 300
A
M
i
M
P
= 1B
T
i
T
C
= 5.1
MK
i
H
L
= 0
MH
i
MH
Output
parameters
(RS485)
U
= 7.14V
o
I
= 112 mA
o
P
= 1W
o
C
= 13.9μF
o
L
= 1000μH
o
+ 70 °C
~
Output
parameters
(RS485)
U
= 7.14B
o
I
= 112
A
o
M
P
= 1B
o
T
C
= 13.9
o
MK
L
= 0
o
MH
Appendix B
February 2019
53
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