Yokogawa RotaMASS 3-Series - Manual (Page 50)

4. INSTAllATION
4-22 IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
Example of installation :
F418.EPS
Hazardous area
Iout +
Iout -
R barrier
4-20mA
Vin
V out
Ground
Safe area
ROTAMASS
/KF2
R load
4.8.7 Connecting HArT- Communication
HART communication is available on analog output 1 and the HART-communicator is connected via load
resistance (230 ... 600 Ω) as shown on the figure below.
HART
Communicator
HART
Communicator
HART
Communicator
Intermediate
terminals
4 to 20mA DC
signal trans-
mission line
Receiving
instrument
Terminal board
Control room
F417.EPS
ROTAMASS
4.8.8 Flowmeters with intrinsic safe outputs
ROTAMASS with option /KF2 has one intrinsic safe current output and one intrinsic safe pulse / status
output. The Ex-data of this output can be found in chapter 9.1.
The second current output, the second pulse / status output and the status input are not available.
The concerning parameters in the menu are not visible.
Current output : The intrinsic safe current output is passive and an external power supply with shunt-diode
type barrier or isolation type barrier should be connected.