Transmitter Symbols - Emerson Rosemount 8750W Reference Manual

Table 4-2:
Wall mount and field mount transmitter
Power input
Pulsed circuit
Modbus output circuit
Termination resisters
Um
Coil excitation output
Environmental considerations
To ensure maximum transmitter life, avoid extreme temperatures and excessive vibration.
Typical problem areas include the following:
•
•
Remote mounted transmitters may be installed in the control room to protect the
electronics from the harsh environment and to provide easy access for configuration or
service.
4.2

Transmitter symbols

Caution symbol — check product documentation for details
Protective conductor (grounding) terminal
Reference manual
Electrical data
Tropical or desert installations in direct sunlight
Outdoor installations in arctic climates
Remote Transmitter Installation
AC power:
90–250VAC, 0.45A, 40VA
Standard DC power:
12–42VDC, 1.2A, 15W
Low power DC:
12–30VDC, 0.25A, 4W
Internally powered (Active): Outputs up to
12VDC, 12.1mA, 73mW
Externally powered (Passive): Input up to
28VDC, 100mA, 1W
Internally powered (Active): Outputs up to
3.3VDC, 100mA, 100mW
Typically 120 ohms. Refer to the MODBUS over
Serial Line Specification & Implementation
Guide (http://www.modbus.org) for more details.
250V
500mA, 40V max, 9W max
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