Features:
- Dual Hermetic Relays Provide Reliable 2-Channel Sensor Input And SPDT Alarm Output.
- Fully Sealed Design Ensures Operation In High Humidity And Wide Temperature Ranges.
- Rack-Mounted Interface Simplifies Integration With 3300 Series Machine Monitoring Systems.
The Bently Nevada 84147-01 Dual Hermetic Relays module is engineered to deliver consistent alarm signaling from multiple sensor inputs. Its sealed construction protects internal contacts from moisture, dust, and environmental contaminants, ensuring long-term reliability in industrial settings.
Equipped with two independent channels, the module efficiently handles sensor input and output routing, supporting both AC and DC alarm circuits. Operating across a wide temperature range and up to 95% non-condensing humidity, it is suitable for demanding monitoring environments where stability is critical.
Designed for easy installation in 3300 Series racks, the 84147-01 provides straightforward connectivity to XDUCR I/O and Record Terminals. Its modular structure allows for simple maintenance, clear signal isolation, and dependable machine protection in continuous operations.
The 84147-01 Bently Nevada Dual Hermetic Relays may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 84147-01 Dual Hermetic Relays Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 84147-01 Dual Hermetic Relays Specs
General
- Manufacturer GE / Bently Nevada
- Model 84147-01
- Condition New Original ready stock
- Product Family 82927-01,81546-01,81545-01
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Hardware-based logic: Alert/Danger logic is controlled by the microprocessor of the front-end module; the terminal board only performs physical on/off switching.
- Signal processing firmware: Supports conversion of digital signals returned from the front-end module into standard 4-20 mA or 1-5 VDC analog signals.
- Self-test firmware support: In conjunction with the system OK LED status, the hardware automatically locks the relay state when an open or short circuit is detected in the sensor circuit.
- Non-programmable: This board itself does not contain firmware that can be flashed online; its behavior depends entirely on the physical jumpers and the front-end module.
- Recorder output range: Output signal type (4-20 mA, 1-5 VDC, or 0 to -10 VDC) can be selected via jumpers.
- Relay state configuration: Can be set to Normally De-energized or Normally Energized mode.
- Alarm Latching: Configures whether the relay automatically resets after the alarm disappears or remains latched until manually reset.
- Sensor Range Matching: Ensures the sensor voltage signal corresponds to the recorder's full-scale range via the rear terminal connection.
- Voting: Determines at the board level whether the relay operates independently or responds to a specific combination of logic.
- Extremely Corrosive Environments: Utilizing a fully hermetic relay, it is specifically designed for environments rich in H2S or ammonia, such as oil refining and fertilizer production, to prevent contact oxidation.
- High Current Control Circuits: Utilizes its 5A contact rating to directly drive audible and visual alarms or intermediate relays in industrial settings.
- Critical Unit Protection (API 670): Serves as the final shutdown protection output for turbine and reciprocating compressor shaft displacement and vibration.
- Remote data monitoring: Transmits analog signals from the 3300 system to a DCS (Distributed Control System) or PLC for real-time trend display in the central control room.