Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 11)

IM 12D06A03-01E
Introduction 1-3
1-2. Application
The EXA transmitter is intended to be used for continuous on-line measurement in industrial installa-
tions. 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 indi-
cate dangerous limits of a process, to monitor product quality, or to function as a simple controller for a
dosing/neutralization system.
Yokogawa designed the EXA transmitter to withstand harsh environments. The transmitter may be
installed
either indoors or outside because the IP65 and NEMA 4X 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 main-
tenance operations.
A variety of EXA hardware is optionally available to allow wall, pipe, or panel mounting. Selecting a prop-
er installation site will permit ease of operation. Sensors should normally be mounted close to the trans-
mitter 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 mtr (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 Section 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 two 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 manu-
al in conjunction with the corresponding sensor user’s manual.
Yokogawa designed and built the EXA to meet the CE regulatory standards. To assure the user of
continued accurate performance in even the most demanding industrial installations.