Application - YOKOGAWA SC202G (S) User Manual

NOTE: The nameplate will also contain the serial number and any relevant
certification marks. Be sure to apply correct power to the unit.
The first two characters of the serial number refers to the year and
month of manufacturing
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: Transmitter SC202
User's Manual
Optional mounting hardware when specified (See model code)

1-2. Application

The EXA transmitter is intended to be used for continuous on-line measurement in industrial installations.
The unit combines simple operation and microprocessor-based performance with advanced self-diagnostics
and enhanced communications capability to meet the most advanced requirements. The measurement can
be used as part of an automated process control system. It can also be used to indicate dangerous limits
of a process, to monitor product quality, or to function as a simple controller for a dosing/neutralisation
system.
Yokogawa designed the EXA analyzer to withstand harsh environments. The transmitter may be installed
either indoors or outside because the IP65 (NEMA4X) housing and cabling glands ensure the unit is
adequately protected. The flexible polycarbonate window on the front door of the EXA allows pushbutton
access to the keypad, thus preserving the water and dust protection of the unit even during routine
maintenance operations.
A variety of EXA hardware is optionally available to allow wall, pipe, or panel mounting. Selecting a proper
installation site will permit ease of operation. Sensors should normally be mounted close to the transmitter
in order to ensure easy calibration and peak performance. If the unit must be mounted remotely from the
sensors, WF10 extension cable can be used up to a maximum of 50 metres (150 feet) with a BA10 junction
box.
The EXA is delivered with a general purpose default setting for programmable items. (Default settings are
listed in Chapter 5 and again in Chapter 11). 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 EXA can be adjusted for any one of five different types of temperature
sensors.
To record such configuration adjustments, write changes in the space provided in Chapter 11 of this
manual. Because the EXA is suitable for use as a monitor, a controller or an alarm instrument, program
configuration possibilities are numerous.
Details provided in this user's manual are sufficient to operate the EXA with all Yokogawa sensor
systems and a wide range of third-party commercially available probes. For best results, read this manual
in conjunction with the corresponding sensor user's manual.
Yokogawa designed and built the EXA to meet the CE regulatory standards. The unit meets or exceeds
stringent requirements of EN 55082-2, EN55022 Class A without compromise, to assure the user of
continued accurate performance in even the most demanding industrial installations.
Introduction 1-2
Y = Year M = Month
2000 M January
2001 N February
2002 P March
2003 R April
........ .. ..........
2008 W September
2009 X October
2010 A November
2011 B December
IM 12D7B3-E-E
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