Bently Nevada 990-05-50-01-00 vibration transmitter, overall view
Bently Nevada 990-05-50-01-00 vibration transmitter, terminal block and wiring connections
Bently Nevada 990-05-50-01-00 vibration transmitter, product label and enclosure
Bently Nevada 990-05-50-01-00 vibration transmitter, overall view
Bently Nevada 990-05-50-01-00 vibration transmitter, terminal block and wiring connections
Bently Nevada 990-05-50-01-00 vibration transmitter, product label and enclosure
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    Apter Power stocks genuine, factory-fresh Bently Nevada 990 transmitter modules to ensure your localized machinery protection loops remain active without long lead times.

990-05-50-01-00

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The 990-05-50-01-00 vibration transmitter is designed for applications requiring simplified vibration monitoring solutions, effectively monitoring small to moderate vibration levels.
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Technical specifications for 990-05-50-01-00

  • Manufacturer:
    Bently Nevada
  • Part Number:
    990-05-50-01-00
  • Product Family:
    990 Vibration Transmitter
  • Product Type:
    Vibration Transmitter
  • Stock:
    1
  • Full-scale Option:
    0-5 mils pp (0-125 μm pp)
  • System Length:
    5.0 meters (16.4 feet)
  • Mounting Option:
    35 mm DIN rail clips
  • Agency Approval:
    Not required
  • Model:
    990 Vibration Transmitter
  • Vibration Input:
    3300 NSv Proximity Probe
  • Output Signal:
    4–20 mA (proportional output)
  • Weight:
    0.54 kg
  • Estimated shipping dimensions:
    10.1x7.4x5.8cm
  • Tariff Code:
    8537101190
  • 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 Applications Monitoring & Control Installation & Integration

Features:

  • Signal Conditioning Between Proximity Probe and Control System
  • Combines Vibration Measurement with 4-20 mA Output Conversion
  • Operates in Conjunction with Bently Nevada 3300 XL and 3300 NSv Probe Systems
The Bently Nevada 990-05-50-01-00 operates as a Vibration Transmitter, providing reliable vibration monitoring for industrial rotating machinery. It continuously processes incoming signals from eddy current proximity probes and converts mechanical vibration into a standard 4-20 mA output signal proportional to vibration amplitude in mils peak-to-peak. The Bently Nevada 990-05-50-01-00 supports a measurement range of 0-5 mils pp (0-127 microns pp) with a frequency response of 4.5 Hz to 10 kHz (-3dB), ensuring accurate capture of machine vibration characteristics. The unit features a BNC connector for access to the original dynamic signal and probe gap voltage monitoring, enabling both continuous process monitoring and detailed diagnostic analysis.

The Bently Nevada 990-05-50-01-00 provides essential vibration monitoring functions common to rotating equipment protection systems, and is a critical component of the measurement path, directly affecting the proper, normal operation of the overall machinery protection scheme. One Bently Nevada 990-05-50-01-00 is typically installed per measurement point depending on the monitoring requirements. The Bently Nevada 990-05-50-01-00 is designed for DIN rail mounting and occupies minimal panel space, with terminal blocks for secure field wiring connections.

For continuous monitoring applications, the Bently Nevada 990-05-50-01-00 interfaces directly with plant control systems, PLCs, and DCS platforms through its standardized 4-20 mA output. In addition to standard vibration measurement, the unit also provides a raw signal output via BNC connector for connection to portable analyzers or diagnostic equipment. The Bently Nevada 990-05-50-01-00 continuously monitors probe system integrity and provides a fault indication if the probe or cable becomes disconnected or shorted. Using this method, the transmitter ensures reliable measurement by continuously validating the health of the eddy current probe system and maintaining accurate output scaling across the configured full-scale range.

The 990-05-50-01-00 Bently Nevada Vibration Transmitter may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 990-05-50-01-00 Vibration Transmitter 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 990-05-50-01-00 Vibration Transmitter Specs

General

  • Manufacturer Bently Nevada
  • Model 990-05-50-01-00
  • Condition New Original ready stock
  • Product Family 990-05-50-01-05,990-05-50-01-01
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.
  • OEM Equipment: Often integrated by manufacturers of centrifugal air compressors, small pumps, motors, and fans.
  • Industrial Sectors: Widely applied in the energy, petrochemical, wastewater, and general manufacturing industries.
  • Target Machinery: Ideal for monitoring radial vibration in machines where space is limited, such as centrifugal compressors.
  • Output Signal: Provides a 4-20 mA DC signal proportional to peak-to-peak vibration (0–125 µm or 0–5 mils) for trend analysis and protective alarming.
  • Diagnostic Port: Features a "PROX OUT" coaxial connector and terminals that provide a dynamic vibration and gap voltage signal, allowing for advanced machinery diagnostics via portable analyzers.
  • Self-Health Circuitry: Includes a "Not OK/Signal Defeat" circuit that drops the output below 3.6 mA if the probe or cable is faulty, preventing false vibration alarms.
  • Power-up Inhibit: Prevents signal errors during startup by inhibiting the output for 2-3 seconds after power is applied.
  • System Integration: Fully compatible with PLCs, DCS, and SCADA systems. Because it is loop-powered (12 to 35 Vdc), it requires only two wires for both power and signal, significantly reducing wiring costs.
  • Probe Compatibility: Specifically designed for use with the Bently Nevada 3300 NSv proximity probe and a matching 5.0-meter extension cable.
  • Field Adjustments: Features non-interacting zero and span potentiometers for precise loop calibration without needing to remove the unit.
  • Environmental Resilience: Its potted construction allows for operation in high-humidity environments (up to 100% condensing).
Description
The 990-05-50-01-00 is a 990 Vibration Transmitter designed to convert mechanical vibration signals into a standard current output, making it suitable for connection to machinery control or monitoring systems. This model is intended for applications that require a simplified vibration monitoring solution.

In terms of measurement range, the 990-05-50-01-00 features a full-scale option of 0–5 mils peak-to-peak (pp), equivalent to 0–125 μm pp, enabling effective monitoring of small to moderate vibration levels.

The system length is 5.0 meters (16.4 feet), providing sufficient flexibility for on-site installation and typical routing requirements.

For installation, the 990-05-50-01-00 is equipped with 35 mm DIN rail clips, allowing easy mounting within control cabinets or standard DIN rail systems.

Regarding approvals, this model does not require agency certification, making it suitable for industrial environments where such approvals are not mandatory.
Alternative Names
990 05 50 01 00 990-05-50-01-01 990-05-50-01-05 990-05-50-02-00 990-05-50-03-00
Technical notes
The Bently Nevada 990-05-50-01-00 can seamlessly and continuously transmit 4 to 20 mA DC proportional displacement signals directly to critical control architectures such as DCS, PLC, or SCADA systems.
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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.
Why is the 990-05-50-01-00 suitable for centrifugal air compressors?
Its compatibility with the compact 3300 NSv proximity probe allows installation in small areas with minimal clearance, which is typical in centrifugal air compressor applications.
Is the 990-05-50-01-00 vibration transmitter suitable for harsh environments?
Yes. It has a potted construction designed to withstand high-humidity environments, including up to 100% condensing conditions.
What installation methods does the 990-05-50-01-00 support?
The transmitter supports DIN-rail mounting or bulkhead mounting using screws as standard options.