BENTLY 1-536067-4

Description

The BENTLY 1-536067-4 is a high-precision Keyphasor® proximity transducer probe, a fundamental sensor for rotating machinery condition monitoring and protection systems. This probe is essential for providing a once-per-revolution timing pulse that is the cornerstone for measuring vibration phase, rotational speed, and for synchronizing other vibration measurements on a shaft.

Product Description

The BENTLY 1-536067-4 is a specialized eddy current proximity probe specifically designed as a Keyphasor. Its function is to detect a specific physical feature on a rotating shaft, such as a keyway, raised area, or notch, generating a sharp electrical pulse for each revolution. This timing reference, provided by the BENTLY 1-536067-4, is indispensable for determining the angular position of vibration peaks, enabling accurate rotor balancing and identifying unbalance, misalignment, and shaft cracks. Integrating the BENTLY 1-536067-4 into a monitoring system transforms raw vibration data into actionable diagnostic information. For machinery analysts and engineers, the reliable signal from this probe is critical for both protection and advanced diagnostic functions. The durability and precision of the BENTLY 1-536067-4 ensure consistent performance in the demanding environment of high-speed turbomachinery. Without a reliable Keyphasor signal like that from the BENTLY 1-536067-4, determining the root cause of vibration issues becomes significantly more challenging.

Product Parameters

• Manufacturer: Bently Nevada (now part of Emerson Automation Solutions).

• Product Family: 3300 XL 8mm Proximity Transducer System.

• Model: 1-536067-4 (Keyphasor Probe).

• Type: Eddy Current Proximity Sensor.

• Diameter: 8 mm (standard).

• Sensitivity: Typically -7.87 V/mm (-200 mV/mil), standard for Bently 8mm systems.

• Linear Range: Approximately 2 mm (80 mils) from the electrical null point.

• Target Material: Ferrous or non-ferrous conductive shaft material (requires a conductive target).

• Temperature Rating: Standard industrial temperature range (e.g., up to 120°C/248°F with appropriate cable).

• Connector: Integrated coaxial cable with standard 3-pin MS-style connector.

Advantages and Features

• Critical Timing Reference: Provides the essential once-per-revolution pulse required for phase measurement, which is vital for rotor dynamics analysis and machine balancing.

• High Signal Integrity: Designed to produce a clean, sharp pulse for reliable detection even at high speeds, ensuring accurate speed and phase readings.

• Rugged Industrial Design: Built with a stainless steel housing to withstand harsh conditions including oil, steam, pressure, and vibration.

• System Compatibility: Fully compatible with Bently Nevada 3300, 3500, and other monitoring systems that use the standard 8mm proximity transducer input.

• Proven Reliability: As a core component from the industry leader in machinery monitoring, the BENTLY 1-536067-4 offers unmatched field-proven dependability.

Application Cases in Industry

• Gas & Steam Turbines: Used to measure rotor speed (RPM) and provide a phase reference for vibration analysis on bearings and shafts.

• Centrifugal Compressors: Essential for torsional analysis, startup/shutdown curve generation, and identifying synchronous vibration components.

• Large Pumps & Fans: Provides speed and phase data for balancing and diagnosing flow-related instabilities.

• Electric Motors & Generators: Used to monitor rotational speed and analyze vibration patterns related to electrical or mechanical faults.

Comparison with Competing Products

Competing Keyphasor probes are offered by companies like SKF (CMSS 2100 series) or Metrix (Vibration Systems). The primary advantage of the BENTLY 1-536067-4 is its universal compatibility and de facto standard status within the vast installed base of Bently Nevada monitoring systems. Its performance characteristics are precisely matched to the associated monitor’s input circuitry. While photoelectric or magnetic pickups can also provide a speed signal, the eddy current BENTLY 1-536067-4 is preferred for its durability, non-contact operation, and ability to function in dirty or oily environments where optical sensors would fail.

Selection Suggestions and Precautions

1. Confirm Probe Length: The part number BENTLY 1-536067-4 typically specifies the probe body and sensitivity but not the threaded length or cable length. You must also specify the correct extension length (e.g., 5mm, 25mm) based on the mounting depth in the bearing bracket, and the required cable assembly (e.g., +C0N021 for a 5m cable).

2. Target Requirement: A proper Keyphasor signal requires a distinct, conductive physical feature on the shaft. Ensure the target (keyway, notch) is well-defined, clean, and provides sufficient gap change to generate a clear pulse.

3. Gap Setting is Critical: The probe must be installed at the correct gap (distance from tip to target) within its linear range, as specified in the installation manual, usually using a micrometer and gap voltage.

4. Avoid Mixing Components: For guaranteed system performance, use a factory-matched probe and cable kit from Bently Nevada. Mixing probes and cables from different sources or batches can affect system calibration and signal accuracy.

5. Source Authentically: Due to its critical role in machine protection, always source the BENTLY 1-536067-4 from authorized Emerson/Bently Nevada distributors to ensure you receive a genuine, fully calibrated, and warrantied component.

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