3500/25-02-05-01 Bently Nevada Enhanced Keyphasor Module
The 3500/25 Enhanced Keyphasor® Module is a half-height, 2-channel module
that provides Keyphasor signals to the Monitor modules in a 3500 Rack. The
Keyphasor module receives analog input signals from proximity probes or
magnetic pickups and converts them to conditioned digital signals that indicate
when the Keyphasor mark on the shaft is in line with the probe. The 3500
Monitoring System can accept 4 such Keyphasor signals, which the 3500
Monitoring System modules and external diagnostic equipment use to measure
such vector parameters as 1X amplitude and phase.
A 3500 Rack may have 1 or 2 Keyphasor Main Modules in a normal configuration,
3 or 4 Keyphasor Main Modules for a paired Keyphasor configuration, and 1 of 5
types of Keyphasor I/O Modules installed.
The 3500 System provides continuous, online
monitoring suitable for machinery protection
applications, and is designed to meet the requirements
of the American Petroleum Institute’s API 670 standard
for such systems. The system’s modular rack-based
design includes the following components:
• 3500/05 Instrument Rack (required)
• One or two 3500/15 Power Supplies (required)
• 3500/22M Transient Data Interface (TDI) Module
(required)
• One or more 3500/XX Monitor Modules
(required)
• One or more 3500/32M (4-channel) or 3500/33
(16-channel) Relay Modules (optional)
• One or two 3500/25 Keyphasor* Modules
(optional)
• One or more 3500/92 Communication Gateway
Modules (optional)
• Input/Output (I/O) Modules (required)
• 3500/94M VGA Display (optional)
• Internal or external intrinsic safety barriers, or
galvanic isolators for hazardous area
installations (optional)
• 3500 System Configuration Software (required)
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