Bently Nevada 84147-01
Bently Nevada 84147-01
Bently Nevada 84147-01
Bently Nevada 84147-01
Bently Nevada 84147-01
Bently Nevada 84147-01
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84147-01

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The Bently Nevada 84147-01 is a dual hermetic relay module for the 3300 Series, providing reliable 2-channel sensor inputs and SPDT relay outputs for machine monitoring and alarm signaling.
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Technical specifications for 84147-01

  • Manufacturer:
    Bently Nevada
  • Part Number:
    84147-01
  • Product Family:
    3300 System
  • Relay Type:
    2-channel fully sealed relay
  • Contact Type:
    Single-pole double-throw (SPDT)
  • Input Channels:
    2-channel sensor input
  • Operating Temperature:
    0°C to +65°C (+32°F to +150°F).
  • Storage Temperature:
    -40°C to +85°C (-40°F to +185°F).
  • Relative Humidity:
    To 95%, non-condensing.
  • Weight:
    0.4 kg
  • Estimated shipping dimensions:
    5x10x22.8cm
  • Tariff Code:
    6602000090
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Firmware Configuration Application

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.
Description
The Bently Nevada 84147-01 Dual Hermetic Relays module is designed as a rack-mounted I/O interface for the 3300 Series machine monitoring system. It facilitates secure connections between sensor inputs and relay alarm outputs, ensuring consistent performance in industrial environments.

This module features two fully sealed channels with single-pole double-throw (SPDT) contacts, rated for 5 A at 120 VAC or 28 VDC. Its hermetic sealing and epoxy encapsulation protect the contacts from environmental factors, enabling operation in temperatures from 0°C to 65°C and storage from -40°C to 85°C. Relative humidity tolerance reaches up to 95% non-condensing, making it suitable for challenging industrial conditions.

Compared to the 84146-01 module in the same series, the 84147-01 offers enhanced dual-channel capability and increased flexibility for connecting multiple sensor inputs, making it ideal for complex monitoring setups requiring multiple alarm outputs.

The module is compatible with XDUCR I/O and Record Terminals, allowing seamless integration into existing 3300 Series racks. It simplifies maintenance and system upgrades by providing clear channel isolation and reliable signal routing.
Alternative Names
84140-01 84141-01 84145-01 84149-01
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary function of the Bently Nevada 84147-01?
It serves as a dual-channel hermetic relay interface for the 3300 Series, connecting sensor inputs to SPDT relay outputs for alarm signaling.
Why is hermetic sealing important for this relay module?
Hermetic sealing protects the internal contacts from moisture, dust, and other environmental hazards.
Can it operate in humid environments?
Yes, it tolerates up to 95% relative humidity non-condensing.
How is the 84147-01 integrated into the 3300 Series system?
It mounts directly in the 3300 Series rack, connecting XDUCR I/O and Record Terminals for sensor input and alarm output.

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