Bently Nevada
Bently Nevada 77581-02 Dual-Channel Digital Vector Filter Module
In stock, ready to ship
Manufacturer: Bently Nevada
Product No.: 77581-02
Product Type: Dual-Channel Digital Vector Filter Module
Product Origin: USA
Payment: T/T
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
Product Description
The 77581-02 is a high-precision Digital Vector Filter (DVF) engineered by Bently Nevada for advanced vibration signal processing. This diagnostic tool is essential for capturing and filtering synchronous (1X) and sub-synchronous vibration data from rotating machinery. By providing dual-channel simultaneous analysis, the 77581-02 allows engineers to observe phase and amplitude relationships in real-time, facilitating accurate machine balancing and resonance identification during startup or steady-state operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Identification | 77581-02 |
| Primary Function | Synchronous vibration filtering and diagnostic data acquisition |
| Processing Capacity | Dual-channel simultaneous display and signal processing |
| Tracking Filter Bandwidth | Adjustable from 12 to 120 cycles per minute (cpm) |
| Analytical Visualization | Bodé plots, Polar plots, Sweep frequency plots |
| Measurement Units | Metric or English units |
| Form Factor | Low-profile digital interface module |
| Physical Dimensions | 33 cm (L) x 25 cm (W) x 4 cm (H) |
| Mass | 2 kg |
Diagnostic Capabilities
The 77581-02 is a key tool for machinery diagnostic services:
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Generates Bodé and Polar plots for identifying critical speeds and structural resonances
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Monitors horizontal and vertical probes concurrently with dual-channel capability
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Narrow tracking filter bandwidth eliminates background noise and non-synchronous vibrations
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Provides clean vector data for precision balancing and rotor dynamics analysis
Technical FAQ
Q: Does the 77581-02 support automated data logging?
A: Yes. It interfaces with Bently Nevada software suites to automate acquisition of sweep frequency plots during machine coast-down or ramp-up.
Q: Can this unit be used with non-Bently Nevada proximity sensors?
A: Yes. While optimized for 3300 XL and 3500 series sensors, it can process standard voltage signals from most eddy current proximity systems that meet input sensitivity requirements.