Advertisement
Quick Start Guide
Input parameters
(power terminals)
L
= 3.3 μH
i
Special Conditions for Safe Use (X)
1. The Rosemount 781 transmitter housing contains aluminum and is
considered a potential risk of ignition by impact or friction. Care must
be taken into account during installation and use to prevent impact
and friction.
2. The surface resistivity of the unit is greater than 1 gigaohm. To avoid
electrostatic charge buildup, it must not be rubbed or cleaned with
solvents or a dry cloth.
3. The Rosemount 781 transmitter will not pass the 500 Vrms electric
strength test and this must be taken into account during installation.
6.5
Canada
I6 Canada Intrinsically Safe
Certificate CSA 2330424
Standards CSA C22.2 No. 0-M91, CSA C22.2 No.94-M91, CSA Std. C22.2
Markings
6.6
Europe
I1 ATEX Intrinsic Safety
Certificate
Standards
Markings
Input parameters
(power terminals)
U
= 30 V
i
I
= 200 mA
i
P
= 1 W
i
C
= 0 μF
i
14
Input parameters
(sensor terminals)
L
= 2.2 μH
i
No. 142-M1987, CSA-C22.2 No. 157-92, CSA Std. C22.2 No.
60529 – 2005
Intrinsically Safe Class I, Division 1, Groups A, B, C, and D T3C
(T
≤ +60 °C) Type 4X; IP 66/67; when installed per
a
00781-1011
Baseefa11ATEX0059X
EN IEC 60079-0:2018, EN 60079-11: 2012
II 1 G Ex ia IIC T4 Ga, T4(–40 °C ≤ T
Input parameters
(RS485)
U
= 11 V
i
I
= 300 mA
i
P
= 1 W
i
C
= 5.1 nF
i
September 2020
Output parameters
(sensor terminals)
L
/L
= 2 mH
a
o
≤ +70 °C)
a
Output parameters
(RS485)
U
= 7.14 V
o
I
= 112 mA
o
P
= 1 W
o
C
= 13.9 μF
o
Emerson.com/Rosemount
Advertisement
