Introduction 1-1
IM 12B6C3-E-E
1. INTRODUCTION AND GENERAL DESCRIPTION
The Yokogawa EXA 202 is a 2-wire transmitter designed for industrial process monitoring, measurement
and control applications. This user’s 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
followed.
1-1. Instrument check
Upon delivery, unpack the
instrument carefully and inspect it
to ensure that it was not damaged
during shipment. If damage is
found, retain the original packing
materials (including the outer box)
and then immediately notify the
carrier and the relevant Yokogawa
sales office.
Make sure the model number on
the textplate affixed to the side of
the instrument agrees with your
order. Examples of nameplates are
shown.
Figure 1-1. Nameplate
N200
pH / ORP TRANSMITTER
PROFIBUS - PA
-10 TO 55 ºC
SUPPLY
OUTPUT
AMB.TEMP. [Ta]
SERIAL No.
EEx ib [ia] IIC T4 for Ta -10 to 55 ºC
EEx ib [ia] IIC T6 for Ta -10 to 40 ºC
KEMA 00ATEX1068 X
IS CL I, DIV 1, GP ABCD
T3B for Ta -10 to 55 ºC
T4 for Ta -10 to 40 ºC
MODEL
EXA PH202S
0344
II 2 (1) G
24VDC/250mA/1,2W
FISCO 17,5VDC/380mA/5,32W
Li=2,6µH Ci=737pF
or
HAZ LOC per Control Drawing
FF1-PH202S-00
Amersfoort,
The Netherlands
PH202S CSA
WARNING
Substitution of
components may impair
intrinsic safety
AVERTISSEMENT
La substitution de composants
peut compromettre la sècurite
intrinsëque.
Refer to Installation Drawing
T4 for Ta -10 to 55 ºC
T6 for Ta -10 to 40 ºC
Ex ia CL I, DIV 1, GP ABCD,
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