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Bently Nevada 3500/25 125800-01 Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/25 (125800-01)
Category: Keyphasor Module
Series: 3500 Machinery Protection System
Number of Channels: 2
Input Signal Types: Proximity probes, magnetic pickups
Frequency Range: 1 to 60,000 RPM
Output Pulse: 5 V digital pulses per revolution
Phase Accuracy: ±0.5°
Product Description
The Bently Nevada 3500/25 125800-01 is a Keyphasor module designed for the 3500 Machinery Protection System. It provides phase reference signals by converting shaft rotation into precise digital timing pulses. These signals are essential for vibration analysis, speed measurement, and phase diagnostics in critical rotating machinery. With its robust dual-channel design and compatibility with a variety of transducers, the module ensures reliable condition monitoring and protection across a wide range of industrial applications.
Main Features
-
Dual-channel Keyphasor inputs for redundancy or independent measurements
-
Wide transducer compatibility including proximity probes, magnetic pickups, and optical sensors
-
Accurate speed and phase reference signals for turbomachinery monitoring
-
High-frequency response supporting slow and high-speed rotating machines
-
Hot-swappable module for easy replacement without shutting down the system
-
Integrated self-diagnostics to ensure data integrity and module health
-
Seamless integration into the 3500 rack-based monitoring and protection system
Technical Specifications
Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 119.9 × 24.4 × 256.5 mm |
| Weight | 0.34 kg |
General Information
| Item | Specification |
|---|---|
| Manufacturer | Bently Nevada (GE) |
| Model Number | 3500/25 125800-01 |
| Product Type | Keyphasor Module |
| Mounting | 3500 Series Rack |
| Operating Temp. | 0°C to +65°C |
| Storage Temp. | -40°C to +85°C |
Electrical Characteristics
| Item | Specification |
|---|---|
| Channels | 2 independent channels |
| Input Types | Proximity probes, magnetic pickups, optical |
| Input Frequency | 1 Hz to 20 kHz |
| Signal Conversion | TTL compatible pulse output |
| Phase Accuracy | ±1° reference |
| Power Supply | From 3500 rack backplane |
Environmental Specifications
| Item | Specification |
|---|---|
| Humidity Range | 5-95% RH (non-condensing) |
| Vibration | 5-2000 Hz, 2G |
| Shock Resistance | 30G, 11 ms |
| Protection Class | IP20 |
Industry Applications
The Bently Nevada 3500/25 125800-01 is widely applied in:
-
Oil & Gas: Phase reference and speed monitoring of turbines, compressors, and pumps
-
Power Generation: Generator, steam, and gas turbine vibration and phase diagnostics
-
Petrochemical & Chemical: Monitoring high-speed compressors and rotating reactors
-
Metals & Mining: Protection of mills, crushers, and other large rotating machines
-
Pharmaceuticals: Ensuring reliable operation of precision high-speed equipment
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Bently Nevada 3500/25 125800-01 Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/25 (125800-01)
Category: Keyphasor Module
Series: 3500 Machinery Protection System
Number of Channels: 2
Input Signal Types: Proximity probes, magnetic pickups
Frequency Range: 1 to 60,000 RPM
Output Pulse: 5 V digital pulses per revolution
Phase Accuracy: ±0.5°
Product Description
The Bently Nevada 3500/25 125800-01 is a Keyphasor module designed for the 3500 Machinery Protection System. It provides phase reference signals by converting shaft rotation into precise digital timing pulses. These signals are essential for vibration analysis, speed measurement, and phase diagnostics in critical rotating machinery. With its robust dual-channel design and compatibility with a variety of transducers, the module ensures reliable condition monitoring and protection across a wide range of industrial applications.
Main Features
-
Dual-channel Keyphasor inputs for redundancy or independent measurements
-
Wide transducer compatibility including proximity probes, magnetic pickups, and optical sensors
-
Accurate speed and phase reference signals for turbomachinery monitoring
-
High-frequency response supporting slow and high-speed rotating machines
-
Hot-swappable module for easy replacement without shutting down the system
-
Integrated self-diagnostics to ensure data integrity and module health
-
Seamless integration into the 3500 rack-based monitoring and protection system
Technical Specifications
Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 119.9 × 24.4 × 256.5 mm |
| Weight | 0.34 kg |
General Information
| Item | Specification |
|---|---|
| Manufacturer | Bently Nevada (GE) |
| Model Number | 3500/25 125800-01 |
| Product Type | Keyphasor Module |
| Mounting | 3500 Series Rack |
| Operating Temp. | 0°C to +65°C |
| Storage Temp. | -40°C to +85°C |
Electrical Characteristics
| Item | Specification |
|---|---|
| Channels | 2 independent channels |
| Input Types | Proximity probes, magnetic pickups, optical |
| Input Frequency | 1 Hz to 20 kHz |
| Signal Conversion | TTL compatible pulse output |
| Phase Accuracy | ±1° reference |
| Power Supply | From 3500 rack backplane |
Environmental Specifications
| Item | Specification |
|---|---|
| Humidity Range | 5-95% RH (non-condensing) |
| Vibration | 5-2000 Hz, 2G |
| Shock Resistance | 30G, 11 ms |
| Protection Class | IP20 |
Industry Applications
The Bently Nevada 3500/25 125800-01 is widely applied in:
-
Oil & Gas: Phase reference and speed monitoring of turbines, compressors, and pumps
-
Power Generation: Generator, steam, and gas turbine vibration and phase diagnostics
-
Petrochemical & Chemical: Monitoring high-speed compressors and rotating reactors
-
Metals & Mining: Protection of mills, crushers, and other large rotating machines
-
Pharmaceuticals: Ensuring reliable operation of precision high-speed equipment
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