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6/08 ST 3000 Release 300 and SFC Model STS103 User’s Manual 265
092, 18-108, 18-158, J18-108 and J18-158.
Annunciation of a primary seal failure per ANSI/ISA–12.27.01 is
electronic and is displayed in various forms based on the type of
communication used for the particular transmitter. Failure of the
primary seal is considered a Critical Failure. Based on testing
annunciation of primary seal failure will occur in 7 hours or less.
The transmitter’s 4-20 mA output will be driven to the selected failsafe
direction – upscale or downscale.
The transmitter’s digital output (DE, HART, Fieldbus) will display any
of the following responses which could indicate a primary seal failure as
well as other meter body faults.
METER BODY FAULT, MB OVERLOAD, SUSPECT INPUT,
SENSOR FAILURE, DEVICE FAILURE.