4 Wiring
4.1 Terminals and wiring requirements
Three pairs of wiring terminals are available for transmitter outputs. These outputs vary
depending on your transmitter output option ordered. The Analog (mA), Time Period
Signal (TPS), and Discrete Output (DO) require external power, and must be connected to
an independent 24 VDC power supply.
The screw connectors for each output terminal accept a maximum wire size of 14 AWG
(2.08 mm²).
Important
• Output wiring requirements depend on whether the meter will be installed in a safe
area or a hazardous area. It is your responsibility to verify that this installation meets all
corporate, local, and national safety requirements and electrical codes.
• If you will configure the meter to poll an external temperature or pressure device, you
must wire the mA output to support HART communications. You may use either
HART/mA single-loop wiring or HART multi-drop wiring.
Table 4-1: Transmitter outputs
Transmitter version Output channels
A B C
Analog 4–20 mA + HART 4–20 mA Modbus/RS-485
Processor for remote-mount 2700
fieldbus transmitter
Disabled Disabled Modbus/RS-485
Time period signal (TPS) 4–20 mA + HART
(passive)
Time Period
Signal (TPS)
Modbus/RS-485
Discrete 4–20 mA + HART
(passive)
Discrete output Modbus/RS-485
4.2 Explosion-proof/flameproof or non-hazardous
output wiring
4.2.1 Wire Analog outputs in explosion-proof/flameproof or
non-hazardous area
CAUTION
Meter installation and wiring should be performed by suitably trained personnel only in
accordance with the applicable code of practice.
Installation Manual
Wiring
MMI-20020989 May 2019
Installation Manual 39
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