<1. Introduction and General Description>
1-2
IM 12J05D02-01E
1.2 Application
The EXA converter 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/neutralization system.
Yokogawa designed the EXA analyzer to withstand harsh environments. The converter may
be installed either indoors or outside because the IP65 (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 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 converter 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 10). 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 four different types of temperature sensors.
To record such configuration adjustments, write changes in the space provided in Chapter
10 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.
9th Edition: Aug. 05, 2015-00
Содержание EXA DO402G
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