The A6312/06 is designed for high reliability for the plant's most critical rotating machinery,
monitoring speed, phase, zero speed and direction of rotation.
This 1-slot monitor is A6312/06, which is used together with the AMS 6500 monitors to build a
complete API 670 machinery protection monitor.
Applications of A6312/06 include steam, gas, compressors and hydro turbine machinery.
A6312/06 can be configured for redundant mode where automatic switchover from primary to
backup latch is possible.
Sensor gap voltage and pulse counting/comparison are monitored to trigger switchover.
When A6312/06 is operating in redundant mode, the main and follower key or speed displacement
sensor must be installed in the same axial plane to ensure phase continuity upon failure.
Speed measurements of A6312/06 consist of a displacement sensor mounted radially to the
machine with the target being a toothed wheel, a keyway or gear rotating on the shaft.
The purpose of the speed measurement of A6312/06 is to alarm on zero speed, monitor for reverse
rotation and provide a speed measurement to track process conditions for advanced analysis.
Key, or phase resolution target of A6312/06, is also a toothed wheel or gear target but must have a
once per revolution target, not a toothed displacement for a transducer.
The phase measurement of A6312/06 is a critical parameter when looking for machine health
changes.
The AMS 6500 is an integral part of PlantWeb™ and AMS software.
PlantWeb provides operations integrated machinery health combined with the Ovation™ and
DeltaV™ process control system.
AMS software provides maintenance personnel advanced predictive and performance diagnostic
tools to confidently and accurately determine machine malfunctions early—complementing
A6312/06’s role in comprehensive rotating machinery monitoring.
