TTR200
| OI/TTR200-EN Rev. B 9
Transmitters
(intrinsically safe equipment)
Supply isolator / DCS input
(related equipment)
U
i
≥ U
o
I
i
≥ I
o
P
i
≥ P
o
L
i
+ L
c
(cable)
≤
L
o
C
i
+ C
c
(cable)
≤
C
o
Field (Ex area)
Control room (safe area)
Fig. 6
A
Transmitter
B
Supply isolator / DCS input with supply / Segment
coupler
Installation in a potentially explosive atmosphere
Transmitters can be installed in all kinds of industrial sectors.
Potentially explosive systems are divided into zones,
meaning that a wide range of different instruments are also
required. For this, pay attention to the country-specific
guidelines and certificates!
NOTICE
Ex relevant specifications must be taken from the EC-type
examination certificates and other relevant certificates that
apply in each case.
3.3
Commissioning
The commissioning and parameterization of the device may
also be carried out in potentially explosive atmospheres using
a handheld terminal that has been approved accordingly under
consideration of an intrinsic safety installation check.
Alternatively, an Ex modem can be connected to the circuit
outside the potentially explosive atmosphere.
3.4
Operating instructions
3.4.1
Protection against electrostatic discharges
The plastic parts inside the device can store electrostatic
charges.
Make sure that no electrostatic charges can accumulate when
handling the device.
4
Function and system design
TTR200 digital transmitters are communication-ready devices
with microprocessor-controlled electronics. It corresponds to
the housing IP rating IP 20 and is suited for 35 mm rail
mounting.
For bidirectional communication, the 4 … 20 mA output signal
is superimposed with an FSK signal according to the HART
standard.
The transmitters can be configured, polled, and tested using a
DTM or an EDD. Handheld terminals can also be used for
communication purposes.
A10096
A
B
+
-
+
-
