Product Description
The 330180-91-00 is a Keyphasor® Module from the Bently Nevada 3300 Monitoring System. This specialized module is a fundamental component for machinery condition monitoring, designed to process the signal from a single Keyphasor proximity probe. Its primary function is to provide a once-per-turn timing reference signal for a rotating shaft. This signal is critical for measuring rotational speed, determining phase angle for vibration analysis (identifying the "heavy spot" on a rotor), and triggering other monitoring functions. The "-91-00" suffix typically denotes a specific hardware version or configuration of this module.
Key Parameters and Specifications
The following table summarizes the key technical parameters for this model.
| Parameter | Specification / Value |
|---|---|
| Compatible System | Bently Nevada 3300 Rack |
| Product Type | Keyphasor® Signal Conditioning Module |
| Function | Processes signal from one Keyphasor probe to generate a once-per-turn pulse. |
| Input Signal | Raw signal from an eddy current proximity probe (typically 5 mm or 8 mm). |
| Output Signal | A clean, shaped transistor-to-transistor logic (TTL) pulse for the monitoring system. |
| LED Indicators | OK LED (green) for power and health, Keyphasor LED (yellow) that flashes with each shaft revolution. |
| Power Supply | Powered from the 3300 rack backplane. |
| Mounting | Slides into a dedicated slot in the 3300 rack. |
| Operating Temperature Range | 0°C to 65°C (32°F to 149°F) |
| Dimensions & Weight | Dimensions: Standard 3300 module; ~ 221 mm (H) x 30 mm (W) x 195 mm (D) / ~ 8.7" x 1.2" x 7.7" Approx. Weight: 0.45 kg (1.0 lb) |
Application Scenarios
The Keyphasor module is indispensable in any application where phase-related vibration data and precise rotational speed are needed for machinery diagnostics and protection.
Power Generation: Used on steam turbines and gas turbines to provide a speed reference for overspeed protection and to allow for balancing and rotor dynamics analysis by identifying the phase of vibration vectors.
Oil & Gas: Critical for monitoring compressors and pumps, enabling operators to distinguish between various vibration phenomena (like imbalance vs. misalignment) based on their phase relationship to the Keyphasor mark.
Hydroelectric Power Plants: Provides a once-per-turn pulse for monitoring large generators, essential for accurate speed measurement and analysis of slow-roll runout.
Heavy Industry: Used on large motors, fans, and gearboxes where understanding the phase of vibration is necessary for predictive maintenance and troubleshooting.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
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