1.3 Related documents
You can find all product documentation via the Rosemount product documentation DVD
shipped with the product or at www.emerson.com/vortex. For more information, see any
of the following documents:
•
Rosemount
®
8800D Series Vortex Flow Meter Product Data Sheet
•
Rosemount
®
8800D Series Vortex Flow Meter Quick Start Guide
•
Rosemount
®
8800D Series Vortex Flow Meter Reference Manual
• Report No. ROS 06/03-34 R001; FMEDA report for Rosemount 8800D Vortex Flow
Meter Prepared for Emerson by exida.com LLC
1.4 Terms and definitions
BPCS
Basic Process Control System
λ
DU
Dangerous Undetected
λ
DD
Dangerous Detected
λ
SU
Safe Undetected
λ
SD
Safe Detected
CPT
Comprehensive Proof Test
Diagnostic
Coverage
[DC] Percentage of detectable faults
Diagnostic Test
Interval
Time during which all internal diagnostics are carried out at least
once.
Fail-safe state
Failure that causes the device to go to the defined fail-safe state
without a demand from the process.
Fail dangerous
Failure that deviates the process signal or the actual output by
more than the safety deviation specification, drifts away from the
user defined threshold (Trip Point) and that leaves the output
within the active scale.
FIT
Failure In Time per billion hours
Fail Dangerous
Detected
Failure that is dangerous but is detected.
Fail Dangerous
Undetected
Failure that is dangerous and that is not detected.
Fail No Effect
Failure of a component that is part of the safety function but that
has no effect on the safety function.
Fail Safe
Failure that causes the output to go to the defined fail-safe state
without an input from the process.
FMEDA
Failure Modes, Effects and Diagnostic Analysis
HART
®
Highway Addressable Remote Transducer
HFT
Hardware Fault Tolerance as defined by 61508-2 7.4.4.1.1
Before you begin
Safety Manual 3