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Xi Advanced Electronics
3-6
Instruction Manual
IM-106-910Xi, Original Issue
November 2010
OPTIONAL ADVANCED
FEATURES INSIDE
THE Xi
Advanced features available inside the Xi are typically ordered as part of the
initial package. However, these advanced features are also available for field
retrofit.
A Xi is shipped from the factory with the optional enhanced software features
enabled based on the configuration.
NOTE
For enhanced software feature option upgrades or to enable the feature to
duplicate the existing configuration, contact Emerson Process Management
at 1-800-433-6076. Reference the following:
6A00269G01 Enhanced Software Option Upgrade, Stoichiometric Function
6A00269G02 Enhanced Software Option Upgrade, Programmable
Reference Function
6A00269G03 Enhanced Software Option Upgrade, 800
°
C Process
Function
Extended Process
Temperature Range to
800
°
C (1472
°
F)
The Oxygen Analyzer employs a heater and thermocouple to maintain a
temperature setpoint at 736
°
C (1357
°
F). Temperature control is maintained
within ±1
°
C to process temperatures of about 705
°
C (1300
°
F). This is
satisfactory for most applications, but excursions to higher temperatures can
occur in some processes. In these instances, the heater is turned off and the
process temperature is used to heat the sensing cell.
The oxygen reading is adjusted immediately to compensate for the varying
process temperatures. It should be noted that cell life will be reduced by
continuous operation at temperatures above 705
°
C (1300
°
F). If process
temperatures are expected to be continuously above 705
°
C, we recommend
the use of an optional bypass or probe mounting jacket accessory. The
extended temperature range feature is selected in the Xi product matrix, but
may also be purchased as a field retrofit.
The I/O Board is shipped from the factory without any of the enhanced software features
activated. These features must be activated once the new board has been installed and
before the Remote Interface is put into service.
If the existing I/O Board has been operated with the Stoichiometric enhanced software
feature, this feature must be activated in the new board before the Remote Interface is put
back into service. Failure to do so will cause a false analog output signal to the DCS.