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Bently Nevada 3500/94 149356-01 Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/94 (149356-01)
Category: Keyphasor Module (3500 Machinery Protection System)
System Compatibility: Bently Nevada 3500 System
Function: Receives and conditions Keyphasor signals from rotating equipment for synchronous data acquisition
Product Description
The Bently Nevada 3500/94 149356-01 Keyphasor Module is part of the 3500 Machinery Protection System and is designed to receive and condition Keyphasor signals from rotating equipment.A Keyphasor signal provides a precise once-per-turn (or multiple-per-turn) pulse from the machine shaft, used as a phase reference for vibration and speed measurements.This signal is essential for determining shaft position, speed, and phase angle, enabling advanced diagnostics such as 1X amplitude, phase measurement, and order analysis.The 3500/94 149356-01 module ensures accurate detection and distribution of these reference signals throughout the monitoring rack, enabling coordinated vibration analysis and protection across multiple measurement channels.
Key Features
-
Accepts up to two independent Keyphasor inputs.
-
Compatible with proximity probes, magnetic pickups, and optical sensors.
-
Provides phase reference and speed data to other monitors in the rack.
-
Supports multiple pulses per revolution for complex shaft configurations.
-
Configurable through Bently Nevada 3500 Configuration Software.
-
Front-panel LED indicators for module and channel status.
-
High immunity to electrical noise and vibration environment interference.
-
Fully compliant with API 670 machinery protection standards.
Technical Specifications
| Parameter | Specification | Description / Notes |
|---|---|---|
| Model Number | 3500/94 | Keyphasor Module |
| Part Number | 149356-01 | Dual-channel module version |
| System Compatibility | Bently Nevada 3500 Rack | Full-height module |
| Number of Channels | 2 independent channels | Supports dual Keyphasor inputs |
| Input Type | Proximity probe, magnetic pickup, or optical sensor | Configurable per channel |
| Input Signal Range | ±20 V peak | Maximum input amplitude |
| Frequency Range | 1 to 20,000 RPM (typical) | Dependent on signal type |
| Signal Conditioning | Adjustable gain and threshold | Ensures clean pulse generation |
| Output Data | Phase reference, speed pulse, and Keyphasor waveform | Shared across rack backplane |
| Isolation | Channel-to-channel and channel-to-backplane | Prevents interference and signal distortion |
| Configuration Tool | Bently Nevada 3500 Configuration Software | User setup and calibration |
| Power Consumption | Approx. 7 W | Typical module load |
| Operating Temperature Range | –30 °C to +65 °C | Industrial operation |
| Storage Temperature Range | –40 °C to +85 °C | Non-operating |
| Relative Humidity | 5–95% non-condensing | Industrial grade |
| Dimensions (H × W × D) | 241.3 × 24.4 × 241.8 mm (9.50″ × 0.96″ × 9.52″) | Full-height module |
| Weight | Approx. 0.9 kg (2.0 lb) | Typical |
| Mounting Type | Full-height slot in 3500 rack | Rear I/O connection |
| LED Indicators | OK, Channel OK, TX/RX | Front panel indicators |
| Compliance | API 670, CE, CSA, ATEX | Meets global standards |
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Bently Nevada 3500/94 149356-01 Keyphasor Module
Manufacturer: Bently Nevada
Product Number: 3500/94 (149356-01)
Category: Keyphasor Module (3500 Machinery Protection System)
System Compatibility: Bently Nevada 3500 System
Function: Receives and conditions Keyphasor signals from rotating equipment for synchronous data acquisition
Product Description
The Bently Nevada 3500/94 149356-01 Keyphasor Module is part of the 3500 Machinery Protection System and is designed to receive and condition Keyphasor signals from rotating equipment.A Keyphasor signal provides a precise once-per-turn (or multiple-per-turn) pulse from the machine shaft, used as a phase reference for vibration and speed measurements.This signal is essential for determining shaft position, speed, and phase angle, enabling advanced diagnostics such as 1X amplitude, phase measurement, and order analysis.The 3500/94 149356-01 module ensures accurate detection and distribution of these reference signals throughout the monitoring rack, enabling coordinated vibration analysis and protection across multiple measurement channels.
Key Features
-
Accepts up to two independent Keyphasor inputs.
-
Compatible with proximity probes, magnetic pickups, and optical sensors.
-
Provides phase reference and speed data to other monitors in the rack.
-
Supports multiple pulses per revolution for complex shaft configurations.
-
Configurable through Bently Nevada 3500 Configuration Software.
-
Front-panel LED indicators for module and channel status.
-
High immunity to electrical noise and vibration environment interference.
-
Fully compliant with API 670 machinery protection standards.
Technical Specifications
| Parameter | Specification | Description / Notes |
|---|---|---|
| Model Number | 3500/94 | Keyphasor Module |
| Part Number | 149356-01 | Dual-channel module version |
| System Compatibility | Bently Nevada 3500 Rack | Full-height module |
| Number of Channels | 2 independent channels | Supports dual Keyphasor inputs |
| Input Type | Proximity probe, magnetic pickup, or optical sensor | Configurable per channel |
| Input Signal Range | ±20 V peak | Maximum input amplitude |
| Frequency Range | 1 to 20,000 RPM (typical) | Dependent on signal type |
| Signal Conditioning | Adjustable gain and threshold | Ensures clean pulse generation |
| Output Data | Phase reference, speed pulse, and Keyphasor waveform | Shared across rack backplane |
| Isolation | Channel-to-channel and channel-to-backplane | Prevents interference and signal distortion |
| Configuration Tool | Bently Nevada 3500 Configuration Software | User setup and calibration |
| Power Consumption | Approx. 7 W | Typical module load |
| Operating Temperature Range | –30 °C to +65 °C | Industrial operation |
| Storage Temperature Range | –40 °C to +85 °C | Non-operating |
| Relative Humidity | 5–95% non-condensing | Industrial grade |
| Dimensions (H × W × D) | 241.3 × 24.4 × 241.8 mm (9.50″ × 0.96″ × 9.52″) | Full-height module |
| Weight | Approx. 0.9 kg (2.0 lb) | Typical |
| Mounting Type | Full-height slot in 3500 rack | Rear I/O connection |
| LED Indicators | OK, Channel OK, TX/RX | Front panel indicators |
| Compliance | API 670, CE, CSA, ATEX | Meets global standards |
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