The Bently Nevada 21500-00-12-05-02 is a proximity probe (eddy current displacement sensor) used in the Bently Nevada 7200 series monitoring system.
It is designed for shaft vibration, position, and displacement measurement in rotating machinery such as:
- Gas turbines
- Steam turbines
- Compressors
- Pumps
- Generators
This probe is part of a critical machinery protection system, widely used in oil & gas, power plants, and heavy industry.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Bently Nevada (GE) |
| Model | 21500-00-12-05-02 |
| Series | 7200 Proximity Transducer System |
| Sensor Type | Eddy current proximity probe |
| Measurement | Shaft displacement / vibration |
| Probe Diameter | 5 mm |
| System Type | 3-wire proximity transducer system |
| Mounting Thread | 1/4-28 UNF (typical for 7200 series) |
| Cable Length Option | Code “05” = ~0.5 m (varies by configuration) |
| Case Length Option | Code “12” = ~120 mm housing length |
| Operating Temperature | approx. -40°C to +100°C (varies by system) |
| Output | Linear voltage proportional to gap |
| System Compatibility | Bently Nevada 7200 monitoring system |
Physical Characteristics
| Item | Specification |
|---|---|
| Probe Type | Standard proximity probe |
| Material | Stainless steel housing |
| Installation | Radial shaft proximity mounting |
| Protection | Industrial vibration / oil environment resistant |
| Cable | Coaxial extension cable system |
System Role
This probe is part of a 3-component measurement chain:
- Proximity Probe (21500 series)
- Extension Cable
- Proximitor Sensor (driver module)
Together they measure:
- Shaft vibration
- Axial displacement
- Rotor position
- Machine eccentricity
This data is essential for machine protection and predictive maintenance systems.
