Emerson Process Management IM-106-910Xi Automatic Calibration Communication Options

Xi Advanced Electronics

Instruction Manual

IM-106-910Xi, Original Issue November 2010

Automatic Calibration

Communication Options

Calibrations consist of introducing bottled gases of known value into the probe so the electronics can make automatic adjustments to the O2 readings to match the bottled gas value. 0.4% O2 and 8% O2 (balance nitrogen) gases are recommended. Never use nitrogen or instrument air as calibration gases.

Flowmeters (for calibration gases) and regulators and flowmeters (for reference air) are available as loose components, mounted into an optional manual calibration switching panel, or as a fully automatic calibration system, Figure 1-3, where calibration solenoids are switched from the Xi Electronics. See IM-106-340AC, SPS 4000B Single Probe Autocalibration Sequencer or IM-106-400IMPS, IMPS 4000 Intelligent Multiprobe Test Gas Sequencer, for additional details.

Data Communications

An operator can configure and troubleshoot the O2 Probe system in one of two ways:

1.Using the Xi Advanced Electronics the Xi carries the following optional advanced features:

•Fully automatic calibration

•Flame safety interface

•High temperature operation [above 700° C (1292° F) standard temperature].

•Stoichiometer feature provides the ability to indicate O2 efficiency when the combustion process goes into reducing conditions (0% O2).

•Programmable reference provides enhanced accuracy when measuring at or near O2 level (20.95% O2).

2.Using the HART Interface. The Xi’s 4-20 mA output line transmits an analog signal proportional to the oxygen level. The HART output is superimposed on the 4-20 mA output line. This information can be accessed through the following:

•Rosemount Analytical Model 375/475 Field Communicator - The handheld communicator requires Device Description (DD) software specific to the Xi. The DD software will be supplied with many Model 375/475 units but can also be programmed into existing units at most Emerson Process Management service offices. See Section 4, Startup and Operation, for additional information.

•Personal Computer (PC) - The use of a personal computer requires AMS software available from Emerson Process Management.

•Delta V and Ovation Distributed Control System (DCS) with AMS-inside capability.

NOTE:

The 375 Field Communicator must be upgraded to System Software 2.0 with Graphic License for operation with the Xi. The AMS software must be upgraded to AMS 8.0 or above.

Contact Emerson Process Management’s Global Service Center (GSC) at

1-800-833-8314 to upgrade the 375 Field Communicator software to System Software 2.0 with Graphic License.

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