Yokogawa EXAxt PH450 4-Wire Analyzer for pH and ORP - Manual (Page 9)

1
IM 12B07C05-01E
1
INTRODUCTION
AND
GENERAL
DESCRIPTION
The Yokogawa EXAxt PH450G is a converter
designed for industrial process monitoring, meas-
urement 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 EXAxt converter if these
instructions are not followed.
1-1. Instrument check
Upon delivery, unpack the instrument care-
fully 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 nameplate
affixed to the side of the instrument agrees with your
order. Example of the nameplate is shown below.
C US
STYLE
Made in Japan
N200
-20 to +55 °C
4-20mA(mA1: +HART)
NO.
AMB. TEMP.
OUTPUTS
SUPPLY
SUFFIX
MODEL
NI CL I, DIV 2, GROUPS ABCD
T6 FOR Ta -20 to +55°C
R
PH450G
PH/ORP TRANSMITTER
SEE INSTRUCTION MANUAL
TYPE 4X
SEE CONTROL DRAWING
NFM016-A9 P.1
KCC-REM-
YHQ-EEN257
Figure 1-1. Nameplate
Note! The nameplate will also contain
the serial number and any relevant
certification marks. Be sure to apply
correct power to the unit, as detailed
on the nameplate.
1-2. Application
The EXAxt converter is intended to be used
for continuous on-line measurement of pH
and/or Redox in industrial installations. The
unit combines simple operation and micro-
processor-based performance with advanced
self-diagnostics and enhanced communications
capability to meet the most advanced require-
ments. The measurement can be used as part
of an automated process control system. It can
also be used to indicate operating limits of a
process, to monitor product quality, or to func-
tion as a controller for a dosing/neutralisation
system.
Sensors should normally be mounted close to
the converter in order to ensure easy calibra-
tion and peak performance. If the unit must
be mounted remotely from the sensors, WF10
extension cable can be used, up to a maximum
of 60 meters (150 feet), with a BA10 junction
box, and up 10 meters standard sensor cable.
The EXAxt is delivered with a general purpose
default setting for programmable items (see
Chapter 5). While this initial configuration
allows easy start-up, the configuration should
be adjusted to suit each particular application.
An example of an adjustable item is the type
of temperature sensor used. The EXAxt can
be adjusted for a number of different types of
temperature sensors.
Details provided in this instruction manual
are sufficient to operate the EXAxt with all
Yokogawa sensor systems and a wide range
of third-party commercially available probes.
For best results, read this manual in conjunc-
tion with the corresponding sensor instruction
manual.
Yokogawa designed the EXAxt converter to
withstand industrial environments. It meets all
the CE regulatory standards. The unit meets or
exceeds stringent requirements (see section
2) without compromise, to assure the user of
continued accurate performance in even the
most demanding industrial installations.
1. INTRODUCTION AND GENERAL DESCRIPTION