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ABB MEASUREMENT & ANALYTICS | INFORMATION
AWT420
Universal 4-wire, dual-input transmitter
Hazardous area version
Measurement made easy
Introduction
The AWT420 is a universal 4-wire, dual-input
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 O .
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.
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:
Search for/click on:
Operating Instruction
O
Commissioning Instruction
C
HART Communications Supplement
HART-EN
PROFIBUS Communications Supplement
PROFIBUS-EN
Ethernet Communications Supplement
ETHERNET-EN
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AWT420
Universal 4-wire,
dual-input transmitter
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