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Instruction Manual
IM-106-4050 Original Issue
March 2006
OxyBalance Oxygen Display
and Averaging System
SYSTEM OVERVIEW
General The OxyBalance is a display and averaging system that augments the
Oxymitter O
2
probe product line. It receives up to (8) 4-20 mA signals from
Rosemount, Westinghouse, or other O
2
probes, and calculates and transmits
up to 4 additional programmable averages (again 4-20 mA). The OxyBalance
system also displays the individual and averaged outputs on a color touch
screen graphic panel. Trend screens, bar graphs (individual probes only), and
alarming indications are provided when a probe goes off line.
The OxyBalance system replaces much of the functionality of older averaging
systems offered by Westinghouse and Rosemount - the Control Room
Electronics (CRE), 1500 Controller-based averaging systems, and the
Veritrak-based 1290 systems. It should be noted, however, that the heater
control and signal conditioning for each individual probe is executed within
separate electronics for each probe. Unlike past averaging systems, and most
current competitive averaging systems, there is no component failure in the
OxyBalance system that will cause the loss of individual probe signals.
The OxyBalance system senses 4-20 mA inputs automatically. Averages are
very easy to set up. Any probes that may fail will default to a 3.5 mA signal
level, indicate in red, and the OxyBalance system will remove these probes
from the average. Likewise, probes that are in calibration will indicate blue,
and provide a contact closure to the OxyBalance system to remove them from
the average while calibrating.
Trends offer adjustable scaling, three time spans (5 min., 8 hrs., and 24 hrs.),
and panning capability back and forth in history.
OxyBalance System
Features
The standard OxyBalance system includes the following features:
• Graphically displays and trends from 1 to 8 O
2
measurements.
• Probe inputs may be from Rosemount Analytical, Westinghouse or any
competitive O
2
probe with a 4-20 mA signal output.
• Generates up to four 4-20 mA signals as programmable averages.
• Failed or calibrating probes are automatically removed from the
average
• Individual probe readings remain autonomous and are unaffected by
any potential failure of the OxyBalance system.
• Variable time scale trends for each individual probe value, as well as for
up to 4 averages.
• Password protection for set up menus.