BENTLY 990-04-50-01-00 vibration transmitter commonly

Bently Nevada 990-04-50-01-00 is an industrial-grade vibration transmitter commonly used for vibration monitoring and protection of centrifugal air compressors, pumps, motors, and other rotating machinery.

1. Core Technical Specifications

Output Signal:
4–20 mA current loop output (commonly used in two-wire loop-powered devices).

Measurement Range:
0.4 mil (approximately 10 micrometers), indicating suitability for detecting very small vibration changes.

Power Supply:
Two-wire (2-wire) loop-powered design, typically compatible with 12–24 VDC power supplies.

Environmental Adaptability:

• Temperature Range: -40°C to +85°C (some models may support higher temperatures).

• Protection Rating: Non-explosion certified, but designed with basic dust and moisture resistance for general industrial environments.

2. Compatibility and Interface

Sensor Compatibility:
Specifically designed for use with Bently Nevada 3300 NSv proximity probes, commonly applied for precise rotor shaft displacement measurement.

System Integration:
Typically used as a transmitter in OEM equipment or Machine Protection Systems (MPS), providing directly readable analog signals to PLC or DCS systems.

3. Application Scenarios

Primary Applications:
Centrifugal air compressors, small pumps, motors, and other equipment requiring high-precision vibration monitoring.

Functional Uses:

• Protection:
  Triggers alarm or shutdown signals when vibration exceeds preset thresholds, preventing severe mechanical damage.

• Predictive Maintenance:
  By monitoring minute vibration changes (at the 0.4 mil level), it enables early detection of bearing wear, imbalance, or related mechanical issues.