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A B B M E A S U R E M E N T & A N A LY T I C S | I N F O R M AT I O N
AWT420
Universal 4-wire, dual-input transmitter
Hazardous area version
Introduction
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AWT420
Universal 4-wire,
The AWT420 is a universal 4-wire, dual-input
dual-input transmitter
transmitter suitable for the measurement and
control of a wide range of parameters including
pH, ORP, conductivity, turbidity/suspended
solids and dissolved oxygen.
This document provides details for AWT420 (metal)
enclosures for use in hazardous areas.
For information on AWT420 (plastic) enclosures for
use in non-hazardous areas refer to
The AWT420 supports both traditional analog and
advanced digital EZLink sensors. For information on
the sensors, including installation, commissioning,
operation and maintenance procedures, refer to the
specific sensor manual.
Measurement made easy
For more information
Further publications for the AWT420 transmitter
are available for free download from:
www.abb.com/measurement
or by scanning this code:
Links and reference numbers for the transmitter
publications are also shown below:
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OI/AWT420-EN
AWT420 transmitter – Data Sheet
AWT420 transmitter –
Operating Instruction
AWT420 transmitter –
Commissioning Instruction
AWT420 transmitter –
HART Communications Supplement
AWT420 transmitter –
HART FDS Communications Supplement
AWT420 transmitter –
PROFIBUS Communications Supplement
AWT420 transmitter –
MODBUS Communications Supplement
AWT420 transmitter –
Ethernet Communications Supplement
Search for/click on:
DS/AWT420-EN
OI/AWT420-EN
CI/AWT420-EN
COM/AWT420/
HART-EN
COM/AWT420/
HART/FDS-EN
COM/AWT420/
PROFIBUS-EN
COM/AWT420/
MODBUS-EN
COM/AWT420/
ETHERNET-EN