IM 12B6B3-E-H
Introduction 1-1
1. INTRODUCTION AND GENERAL DESCRIPTION
The Yokogawa EXA 402 is a 4-wire transmitter designed for industrial process monitoring, measurement
and control applications. This instruction manual contains the information needed to install, set up, operate
and maintain the unit correctly. This manual also includes a basic troubleshooting guide to answer typical
user questions.
Yokogawa can not be responsible for the performance of the EXA analyzer if these instructions are not fol-
lowed.
1-1. Instrument Check
Upon delivery, unpack the instrument carefully and inspect it to ensure that it was not damaged during ship-
ment. If damage is found, retain the original packing materials (including the outer box) and then immedi-
ately notify the carrier and the relevant Yokogawa sales office.
Make sure the model number on the textplate affixed to the top of the display board of the instrument
agrees with your order.
NOTE:
The textplate will also contain the serial number and power supply selection.
Be sure to apply correct power to the unit.
Figure 1-1. Textplate
Check that all the parts are present, including mounting hardware, as specified in the option codes at the
end of the model number. For a description of the model codes, refer to Chapter 2 of this manual under
General Specifications.
Basic Parts List: Converter EXA 402
Instruction Manual (See model code for language)
Packet with special cable grommet and blanking pieces
Packet with 4 screws for mounting on a panel (M6x8mm)
Optional mounting hardware when specified (See model code)
SERIAL NO.
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