Instruction manual

Instruction Manual
760006-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Appendices 11-5
Model NGA 2000 Platform
STANDARD ALARM FUNCTION
Normal Shows no other alarm
Maintenance request Indicates a warning alarm
Failure Indicates a failure alarm
Calibration in progress Calibration in progress Indicates a bound Autocalibration module is
in its calibration sequence
Zero in progress Indicates the Analyzer is performing a zero calibration
Span in progress Span in progress Indicates the Analyzer is performing a span cali-
bration
Zero failure Indicates the last zero calibration failed
Span failure Indicates the last span calibration failed
Range overflow Indicates the reading is higher than the current range
Range underflow Range underflow Indicates the reading is lower than the high limit of
the next lower range
Flow low Indicates the flow is less than its low limit
Flow high Indicates the flow is higher than its high limit
Concentration limit 1 – 4 Only supported on MLT modules
Range 1 – 4 Indicates Analyzer is on range 1 to range 4
Validity Shows invalid readings, see previous section
Failure Indicates Analyzer hardware failure
System failure Indicates loss of communication with one or more LON modules
Control status Indicates remote or local control
CLD only - Ozonator out See CLD manual
CLD only - NO/NOx mode See CLD manual
FID only - Purge failure See FID manual
FID only - Flame out See FID manual
Table 11-4. Available Alarms – Analog Output with 3 Alarms (v2.3)