SmartLine Multivariable Transmitter
12
Quick Start Installation Guide
December 2015
The transmitter is designed to operate in a two-wire power/current loop
with loop resistance and power supply voltage within the operating
range; see
Figure 7.
With an optional remote meter, the voltage drop for this must be added
to the basic power supply voltage requirements to determine the
required transmitter voltage and maximum loop resistance. Additional
consideration is required when selecting intrinsic safety barriers to
ensure that they will supply at least minimum transmitter voltage,
including the required 250 ohms of resistance (typically within the
barriers) needed for digital communications.
Wiring Variations
The above procedures are used to connect power to a transmitter. For
loop wiring and external wiring, detailed drawings are provided for
Transmitter installation in
non-intrinsically safe areas and for intrinsically safe loops in hazardous
area locations.
This procedure shows the steps for connecting power to the transmitter.
Wiring must comply with local codes, regulations and ordinances.
Grounding may be required to meet various approval body
certification, for example CE conformity. Refer to the SmartLine
Multivariable Transmitter User’s Manual 34-SM-25-03) for details.
