Thermo Fisher Scientific
4-1 AutoXP Users Guide
Chapter 4
HART Instructions
Introduction
The Thermo Scientific AutoXP Multi Variable Transmitter (MVT) is designed to provide both
reliable and accurate Differential Pressure, Static Pressure and Line Temperature
measurements. With HART protocol, AutoXP also provides users with access to control or
program parameters via a host system, such as AMS, or locally using an Emerson 475 Hand
Held Terminal (HHT) or similar.
HART Protocol Overview
The Highway Addressable Remote Transducer (HART) protocol is an industrial protocol that
is superimposed on the 4
–
20 mA analog output of the AutoXP. It is an open standard, and
full details about HART can be obtained from the HART Communication Foundation at
A complete definition of the protocol interface including all implemented commands can be
found in the AutoXP HART Field Device Specification (P/N 1-0500-260).
Summary of Contents for AutoXP
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