Product Description
Bently Nevada 81545-01 Keyphasor Signal Conditioner
Product Overview
- The Bently Nevada 81545-01 is a Keyphasor Signal Conditioner, designed for use in machinery monitoring systems to process Keyphasor signals from proximity probes or magnetic pickups in industrial applications such as power generation, oil and gas, and process industries. This module is part of Bently Nevada’s 3300 or 3500 Series Condition Monitoring Systems, providing a critical reference signal for phase and speed measurements of rotating machinery, such as turbines, compressors, pumps, and generators. The Keyphasor signal is used to correlate vibration data with rotor position, enabling precise diagnostics of machinery health, including imbalance, misalignment, and other faults. The 81545-01 is a specific variant of Bently Nevada’s Keyphasor signal conditioning modules, potentially featuring specific input/output configurations or compatibility with certain transducers compared to other models. It is designed for reliable operation in harsh industrial environments and integrates seamlessly with Bently Nevada’s monitoring systems. The 81545-01 is distinct from Bently Nevada’s other monitoring components, such as vibration monitors (e.g., 330500 Velomitor), proximity probes (e.g., 3300 XL 8mm), or system racks (e.g., 3500/42M), focusing specifically on Keyphasor signal processing.
Technical Specifications
- The 81545-01 has the following specifications based on industry sources and Bently Nevada documentation:
| Specification | Details |
|---|---|
| Model/Part Number | 81545-01 |
| Manufacturer | Bently Nevada (a Baker Hughes company) |
| Description | Keyphasor Signal Conditioner for Machinery Monitoring Systems |
| Series | Compatible with 3300 and 3500 Series Monitoring Systems |
| Function | Processes Keyphasor signals for phase and speed reference in rotating machinery monitoring |
| Input Types | Proximity probe (e.g., 3300 XL 8mm, 7200 Series) or magnetic pickup |
| Input Signal Range | -24 VDC to 0 VDC (proximity probe) 0.1 V to 100 V peak-to-peak (magnetic pickup) |
| Output Types | Buffered Keyphasor signal (TTL or analog) 4–20 mA output (optional, configuration-dependent) Relay outputs for alarms (optional) |
| Frequency Range | 0.1 Hz to 10 kHz (typical for Keyphasor signals) |
| Communication Interfaces | Interfaces with 3300/3500 rack via backplane Optional Modbus RTU/TCP with 3500 system |
| Diagnostics | Signal validation, fault detection, status LEDs |
| Compatibility | Bently Nevada 3300/3500 Series racks, proximity probes (e.g., 3300 XL, 7200), magnetic pickups; integrates with System 1 software and SCADA/DCS systems |
| Power Supply | Powered via 3300/3500 rack (typically -24 VDC or +24 VDC) |
| Power Consumption | Approx. 5–10 W |
| Environmental Specifications | Operating Temperature: -30°C to +65°C (-22°F to +149°F) Storage Temperature: -40°C to +85°C (-40°F to +185°F) Relative Humidity: 5% to 95% non-condensing Vibration: IEC 60068-2-6 compliant Shock: IEC 60068-2-27 compliant |
| Enclosure | Module housed in 3300/3500 rack; IP20 (rack-dependent) |
| Dimensions | Approx. 25 mm (W) x 150 mm (H) x 250 mm (D) (module size) |
| Weight | Approx. 0.5–1 kg |
| Mounting | Plugs into 3300 or 3500 Series rack slot |
| Certifications | CE, CSA, ATEX/IECEx Zone 2 (when installed in certified rack); marine certifications (e.g., DNV, ABS, configuration-dependent) |